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techtalk:ref:genmsr05 [2021/07/09 22:41]
hippysmack [Pistons]
techtalk:ref:genmsr05 [2024/01/17 17:31]
hippysmack
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 See also [[techtalk:​ref:​genmsr06#​using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using a Stethoscope or Other to Hunt Down Engine Noises]] in the REF section of the Sportsterpedia. \\ See also [[techtalk:​ref:​genmsr06#​using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using a Stethoscope or Other to Hunt Down Engine Noises]] in the REF section of the Sportsterpedia. \\
  
-Noise and Vibration are normal for a Harley. ((Recon Dad of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=823082)) \\  +Noise and Vibration are normal for a Harley. ((Recon Dad of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​efi-sportster-motorcycle-talk-2007-and-up/​97463-engine-noise?t=823082)) \\  
-In fact, they are an amalgamation of vibration, sort of a syncopated pandemonium. ((Ireeman of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2072940&​page=3)) \\ +In fact, they are an amalgamation of vibration, sort of a syncopated pandemonium. ((Ireeman of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​196416-what%C2%92s-that-sound/​page3?​t=2072940&​page=3)) \\ 
-Harmful noises are hard to determine without a well trained ear and these engines make a lot of noise anyway. ((milmat1 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=1902363&​highlight=stethoscope#​post1902363)) \\+Harmful noises are hard to determine without a well trained ear and these engines make a lot of noise anyway. ((milmat1 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-bottom-end/​72005-knocking-apparently-big-end?​highlight=stethoscope#​post1506806)) \\
 Plus the sound travels through the cases to places other than where it originates. \\ Plus the sound travels through the cases to places other than where it originates. \\
 So critical listening is a must as a noise on one side of the engine may sound more like another area instead. \\ So critical listening is a must as a noise on one side of the engine may sound more like another area instead. \\
-There was an article in Cycle World back in '83 that said the noises a healthy Ironhead makes would be considered terminal on other makes. ((83XLX of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=832376)) \\+There was an article in Cycle World back in '83 that said the noises a healthy Ironhead makes would be considered terminal on other makes. ((83XLX of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​98047-ironhead-noise?t=832376)) \\
 In becoming familiar with the "​normal"​ noises, you can just keep an ear out for abnormal ones as you're speeding down the road. \\ In becoming familiar with the "​normal"​ noises, you can just keep an ear out for abnormal ones as you're speeding down the road. \\
-They all sound a little different though, which is really unique. ((fergerburger of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=832376)) \\+They all sound a little different though, which is really unique. ((fergerburger of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​98047-ironhead-noise?t=832376)) \\
  
-Of course the closer you are to the point of origin of a noise the louder it will be. ((Ferrous Head of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=977525&​page=4)) \\+Of course the closer you are to the point of origin of a noise the louder it will be. ((Ferrous Head of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​107497-using-a-stethoscope-to-listen-to-the-engine/​page4?​t=977525&​page=4)) \\
  
 You sometimes get random noises too and they are generally chassis related. \\ You sometimes get random noises too and they are generally chassis related. \\
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 Larger bearings like mains "​rumble"​ when they are worn, but also if they aren't getting enough oil for whatever reason. \\ Larger bearings like mains "​rumble"​ when they are worn, but also if they aren't getting enough oil for whatever reason. \\
  
-|  Mechanic stethoscope. ((photos by asasial of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=977525&​page=3)) ​ |  A wooden dowel for a listening tool. ((photos by Hippysmack)) ​ |+|  Mechanic stethoscope. ((photos by asasial of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​107497-using-a-stethoscope-to-listen-to-the-engine/​page3?​t=977525&​page=3)) ​ |  A wooden dowel for a listening tool. ((photos by Hippysmack)) ​ |
 |{{:​techtalk:​ref:​tools:​stethoscope_1_by_asasial.jpg?​direct&​300|}}|{{:​techtalk:​ref:​tools:​listening_stick_2_by_hippysmack.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​tools:​stethoscope_1_by_asasial.jpg?​direct&​300|}}|{{:​techtalk:​ref:​tools:​listening_stick_2_by_hippysmack.jpg?​direct&​300|}}|
- 
- 
- 
- 
  
 ===== Critical Listening ===== ===== Critical Listening =====
- 
 If you find that it is an internal engine noise, don't go straight to your tool box and put your blinders on. ((HD Tech Tip dated April 1986)) \\ If you find that it is an internal engine noise, don't go straight to your tool box and put your blinders on. ((HD Tech Tip dated April 1986)) \\
 It's hard to check oil pressure, cylinder compression,​ timing or locate the noise if the motor is in now little pieces. \\ It's hard to check oil pressure, cylinder compression,​ timing or locate the noise if the motor is in now little pieces. \\
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 ====== Comparing Noises From Other Bikes ====== ====== Comparing Noises From Other Bikes ======
- +Imports are liquid cooled, and that in and of itself kills a lot of engine noise that would normally get to your ears due to: ((DG_Sportster of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​efi-sportster-motorcycle-talk-2007-and-up/​97463-engine-noise?t=823082)) \\
-Imports are liquid cooled, and that in and of itself kills a lot of engine noise that would normally get to your ears due to: ((DG_Sportster of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=823082)) \\+
  
   * Closer tolerances allowed by liquid cooling.   * Closer tolerances allowed by liquid cooling.
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 ====== Noise From Vibration ====== ====== Noise From Vibration ======
-Harley-Davidson uses a common crank pin, meaning that both pistons travel up and down together at the same time. ((xllent01 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1721404)) \\+Harley-Davidson uses a common crank pin, meaning that both pistons travel up and down together at the same time. ((xllent01 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​160409-rpm-related-vibrations?​t=1721404)) \\
 So all the weight is being thrown back and forth causing vibrations and the very particular “proprietary” sound or rumble. \\ So all the weight is being thrown back and forth causing vibrations and the very particular “proprietary” sound or rumble. \\
 Keeping the motor above 3000 rpm's will smooth the vibrations out dramatically. \\ Keeping the motor above 3000 rpm's will smooth the vibrations out dramatically. \\
  
-We can learn to live with it if we know what some of the symptoms are, or we can try to reduce it in many ways. ((xllent01 of the XLFORUM ​http://​xlforum.net/​forums/archive/index.php/t-3983.html)) \\ +We can learn to live with it if we know what some of the symptoms are, or we can try to reduce it in many ways. ((xllent01 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/2652-what-s-all-the-deal-about-vibration)) \\ 
 Look for loose fasteners and hardware. \\ Look for loose fasteners and hardware. \\
 The engine and transmission mounts that are loose especially the top motor mount. ​ The engine and transmission mounts that are loose especially the top motor mount. ​
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 Timing can cause vibrations. \\ Timing can cause vibrations. \\
-A lot of the vibration depends on the rpm and gear you are riding in. These motors do not like to be lugged. ((BWP 5p of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=27)) \\+A lot of the vibration depends on the rpm and gear you are riding in. These motors do not like to be lugged. ((BWP 5p of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page27?​t=27701&​page=27)) \\
 Move the timing 1 degree more advanced and test ride. Then move it one degree retarded from original setting and test ride. \\ Move the timing 1 degree more advanced and test ride. Then move it one degree retarded from original setting and test ride. \\
-You will find you can tune out some vibrations at certain rpms moving the timing slightly. ((Shu of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1662083)) \\+You will find you can tune out some vibrations at certain rpms moving the timing slightly. ((Shu of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​154889-speed-and-vibration?​t=1662083)) \\
  
 Tires can cause vibrations. \\ Tires can cause vibrations. \\
-Worn or under-inflated tires can develop cupping in the tread that can create a lot of vibes. ((Hexlobular of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1662083&​page=2)) \\+Worn or under-inflated tires can develop cupping in the tread that can create a lot of vibes. ((Hexlobular of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​154889-speed-and-vibration/​page2?​t=1662083&​page=2)) \\
 You might not notice them all the time, but they can create a buzzy ride at certain speeds. \\ You might not notice them all the time, but they can create a buzzy ride at certain speeds. \\
  
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 ===== Front Forks ===== ===== Front Forks =====
-At a full stop with the bike idling, you apply the front brake and the bike gets a vibration like a buzz in frequency. ((wedge of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1680285&​highlight=forks+vibrate)) \\+At a full stop with the bike idling, you apply the front brake and the bike gets a vibration like a buzz in frequency. ((wedge of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-drivetrain/​sportster-motorcycle-tires-wheels-and-brakes-aa/​157028-vibration-front-brake?​t=1680285&​highlight=forks+vibrate)) \\
 It disappears when you release the brake lever, and comes back as soon as you apply the brake. \\ It disappears when you release the brake lever, and comes back as soon as you apply the brake. \\
  
-As the engine rotates (picture the crank moving) the inertia tries to move the bike slightly fore and aft. ((racerwill of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1680285&​highlight=forks+vibrate)) \\+As the engine rotates (picture the crank moving) the inertia tries to move the bike slightly fore and aft. ((racerwill of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-drivetrain/​sportster-motorcycle-tires-wheels-and-brakes-aa/​157028-vibration-front-brake?​t=1680285&​highlight=forks+vibrate)) \\
 The wheel absorbs this motion by rolling very slightly , maybe 1/16" or less. \\ The wheel absorbs this motion by rolling very slightly , maybe 1/16" or less. \\
 By applying the front brake, you stop the movement of the tire so the oscillations of inertia go to the forks and back into the bike. \\ By applying the front brake, you stop the movement of the tire so the oscillations of inertia go to the forks and back into the bike. \\
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 Vibration in the forks can appear like a dance or like the forks are about to break. \\ Vibration in the forks can appear like a dance or like the forks are about to break. \\
 This can shake the brake pad(s) or lights, mirrors and any part on the front can be subject to making noise. \\ This can shake the brake pad(s) or lights, mirrors and any part on the front can be subject to making noise. \\
 +
 ===== Motor Mounts ===== ===== Motor Mounts =====
-Engine mounts may very well be the most ignored maintenance point. ((cantolina of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=3)) \\+Engine mounts may very well be the most ignored maintenance point. ((cantolina of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page3?​t=27701&​page=3)) \\
 You can loosen them after working on the engine, run the bike to let the engine "​settle in" to the mounts and then torque'​em back down. \\ You can loosen them after working on the engine, run the bike to let the engine "​settle in" to the mounts and then torque'​em back down. \\
 It may help with vibration issues. \\ It may help with vibration issues. \\
-You can also torque the motor mount bolts and put a small line (fine permanent marker) across the bolt and the nut. ((MikeGV of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=24)) \\+You can also torque the motor mount bolts and put a small line (fine permanent marker) across the bolt and the nut. ((MikeGV of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page24?​t=27701&​page=24)) \\
 That way can easily spot if the bolt/nut has moved and loosened. \\ That way can easily spot if the bolt/nut has moved and loosened. \\
  
 ==== Ironheads / Rigid mount Evos ==== ==== Ironheads / Rigid mount Evos ====
- +The frame mount sporty is designed to get rigidity from the engine mounted to the frame. ((sep69 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​128772-motor-mount-question?​highlight=cracked+head+motor+mount#​post2973264)) \\
-The frame mount sporty is designed to get rigidity from the engine mounted to the frame. ((sep69 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=4069288&​highlight=cracked+head+motor+mount#​post4069288)) \\+
 Loosing one mount therefore will weaken the overall construction (and increase vibration). Loosing one mount therefore will weaken the overall construction (and increase vibration).
  
-The reason for so many engine mounts is also rotational loads the engine develops. ((tmack-1 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=4069288&​highlight=cracked+head+motor+mount#​post4069288)) \\+The reason for so many engine mounts is also rotational loads the engine develops. ((tmack-1 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​128772-motor-mount-question?​highlight=cracked+head+motor+mount#​post2973264)) \\
 Something like when a muscle car shakes the engine when you rev it. \\ Something like when a muscle car shakes the engine when you rev it. \\
 If you are building a bike, chances are you will make performance mod's to the engine. \\ If you are building a bike, chances are you will make performance mod's to the engine. \\
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 **Symptom**:​ \\ **Symptom**:​ \\
-Vibration, growing stronger with higher RPMs, can be violent. ((boneheaddoctor of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=4610630&​highlight=motor+mount+noise#​post4610630)) \\+Vibration, growing stronger with higher RPMs, can be violent. ((boneheaddoctor of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​158202-vibration/​page2?​highlight=motor+mount+noise#​post3359324)) \\
  
 **Condition**:​ \\ **Condition**:​ \\
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 Make certain all the mount bolts are not only there, but are properly torqued as well. \\ Make certain all the mount bolts are not only there, but are properly torqued as well. \\
 One bolt can make that much of a difference. \\ One bolt can make that much of a difference. \\
 +
 ==== Rubber mount Evos ==== ==== Rubber mount Evos ====
 There shouldn'​t be that much vibration on rubbermount bikes. \\ There shouldn'​t be that much vibration on rubbermount bikes. \\
-You should feel some but not enough to make your feet numb. ((gronk62 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=6)) \\ +You should feel some but not enough to make your feet numb. ((gronk62 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page6?​t=27701&​page=6)) \\ 
-Keeping the motor mounts in specs makes all the difference in the world. ((Bill2 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=12)) \\+Keeping the motor mounts in specs makes all the difference in the world. ((Bill2 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page12?​t=27701&​page=12)) \\
 **Tip**: If your mirrors are blurry, check your motor mounts. \\  **Tip**: If your mirrors are blurry, check your motor mounts. \\ 
  
-The front motor mounts are notorious for loosening up. ((Toejam503 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=5713261&​highlight=loose+motor+mount#​post5713261)) \\+The front motor mounts are notorious for loosening up. ((Toejam503 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​195355-vibration-during-acceleration?​highlight=loose+motor+mount#​post4251983)) \\
 Also check the condition of all the motor mount rubber isolators, they can deteriorate from age. \\ Also check the condition of all the motor mount rubber isolators, they can deteriorate from age. \\
-If you over tighten the front mount, you're compressing the mount making it stiffer. ((A_Ride_4_ever of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=28)) \\+If you over tighten the front mount, you're compressing the mount making it stiffer. ((A_Ride_4_ever of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page28?​t=27701&​page=28)) \\
 This leads to less give and a much higher chance of cracking the front mount. \\ This leads to less give and a much higher chance of cracking the front mount. \\
  
-Check the large thru bolt (1" hex head) in the front rubber motor mount. ((ron1200c of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=27701)) \\ +Check the large thru bolt (1" hex head) in the front rubber motor mount. ((ron1200c of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt?t=27701)) \\ 
-It's in the front of your bike below the voltage regulator under the oil filter. ((xena of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=4)) \\+It's in the front of your bike below the voltage regulator under the oil filter. ((xena of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page4?​t=27701&​page=4)) \\
 There'​s your rubber mount with the big bolt going through it. \\ There'​s your rubber mount with the big bolt going through it. \\
 If there is no thread showing where the nut is on the bolt, check tightness. \\ If there is no thread showing where the nut is on the bolt, check tightness. \\
-Threads are normally past the end of the nut ranging from 1-2 threads to 1-1/2" or so. ((garbiker of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=5)) ((dave of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=8)) \\+Threads are normally past the end of the nut ranging from 1-2 threads to 1-1/2" or so. ((garbiker of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page5?​t=27701&​page=5)) ((dave of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page8?​t=27701&​page=8)) \\
 So if it's flush or so you may need to retighten it or at least check it. \\ So if it's flush or so you may need to retighten it or at least check it. \\
-As long as it's up to torque (and Loctite was applied), you're good. ((dave of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=8)) \\+As long as it's up to torque (and Loctite was applied), you're good. ((dave of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page8?​t=27701&​page=8)) \\
 You can remove the right foot peg and rear brake pedal to gain access to the nut. \\ You can remove the right foot peg and rear brake pedal to gain access to the nut. \\
-You may only need to take the bolts out of the front peg mount and rotate it out of the way to get a torque wrench on that nut. ((clayvis of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=4)) \\+You may only need to take the bolts out of the front peg mount and rotate it out of the way to get a torque wrench on that nut. ((clayvis of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page4?​t=27701&​page=4)) \\
 You can used an open end wrench on the bolt head also. \\ You can used an open end wrench on the bolt head also. \\
  
-Also, when looking at the front lower motor mounts from under the bike, the rubber mounts seem to sag downward just a bit. ((GlockDoc of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=28)) \\+Also, when looking at the front lower motor mounts from under the bike, the rubber mounts seem to sag downward just a bit. ((GlockDoc of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page28?​t=27701&​page=28)) \\
 This should be somewhat normal as the engine puts downward pressure on the mount when setting. \\ This should be somewhat normal as the engine puts downward pressure on the mount when setting. \\
-Both front and rear mounts can sag like this. ((JohnK of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=29)) \\+Both front and rear mounts can sag like this. ((JohnK of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page29?​t=27701&​page=29)) \\
 The rears you can't tell from the outside but when you remove the swingarm, you can see the pivot pin is not centered. \\ The rears you can't tell from the outside but when you remove the swingarm, you can see the pivot pin is not centered. \\
 You can swap the rear rubbers left to right and the pin will be centered again. \\ You can swap the rear rubbers left to right and the pin will be centered again. \\
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 However, this won't work with front mounts because they are LH and RH parts. \\ However, this won't work with front mounts because they are LH and RH parts. \\
  
-|  Front lower motor mount bolt. ((photo by salukidawg of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=21)) ​ |  1 year old (2011) 1200C front mount sag. ((photo by GlockDoc of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=28)) ​ |+|  Front lower motor mount bolt. ((photo by salukidawg of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page21?​t=27701&​page=21)) ​ |  1 year old (2011) 1200C front mount sag. ((photo by GlockDoc of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page28?​t=27701&​page=28)) ​ |
 |{{:​techtalk:​ref:​genmsr:​04_motor_mount_bolt_by_salukidawg.jpg?​direct&​200|}}|{{:​techtalk:​ref:​genmsr:​2011_1200c_front_motor_mount_by_glockdoc.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​genmsr:​04_motor_mount_bolt_by_salukidawg.jpg?​direct&​200|}}|{{:​techtalk:​ref:​genmsr:​2011_1200c_front_motor_mount_by_glockdoc.jpg?​direct&​300|}}|
  
-Check the top isolator link mount bolts (the ones that bolt to top of the front head). ((gronk62 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=4)) \\+Check the top isolator link mount bolts (the ones that bolt to top of the front head). ((gronk62 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page4?​t=27701&​page=4)) \\
 If they come loose, add some blue Loctite to the threads and re-torque them. \\ If they come loose, add some blue Loctite to the threads and re-torque them. \\
  
 ===== Handlebars ===== ===== Handlebars =====
-Handle bars are kind of like tuning forks. ((Moved On of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=45811&​page=2)) \\ +Handle bars are kind of like tuning forks. ((Moved On of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​27681-nickels-in-the-handlebars/​page2?​t=45811&​page=2)) \\ 
 They'​ll have a place that they want to resonate. \\  They'​ll have a place that they want to resonate. \\ 
 To change the resonant frequency one can either lengthen the forks or weight them down. \\ To change the resonant frequency one can either lengthen the forks or weight them down. \\
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 These are not a fix to end all problems, but to possibly lesson some of them if you're having excessive vibration problems in the bars. \\ These are not a fix to end all problems, but to possibly lesson some of them if you're having excessive vibration problems in the bars. \\
  
-  * **Inspect / Replace the mounting bushings**: \\ There should be a certain ​ amount of "​play"​ that the OEM rubber bushings should have when installed. ((Alexintenn of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2005987)) \\ If they are tightened too much, with zero slack in the bushings, the rubber is compressed and you essentially have a rigid mounted bar. \\ The over-compression of the rubber bushings negate the ability of them to help with the vibration. \\ If you loosen the bars enough to have more play, it helps a lot. \\ And, since some use use a bolt which feeds up into the risers, there is no nut on the bottom to loosen. ((RussW of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2005987)) +  * **Inspect / Replace the mounting bushings**: \\ There should be a certain ​ amount of "​play"​ that the OEM rubber bushings should have when installed. ((Alexintenn of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​188257-handlebar-vibes-solution?​t=2005987)) \\ If they are tightened too much, with zero slack in the bushings, the rubber is compressed and you essentially have a rigid mounted bar. \\ The over-compression of the rubber bushings negate the ability of them to help with the vibration. \\ If you loosen the bars enough to have more play, it helps a lot. \\ And, since some use use a bolt which feeds up into the risers, there is no nut on the bottom to loosen. ((RussW of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​188257-handlebar-vibes-solution?​t=2005987)) 
-    * The compression of the bushing is dictated by the thickness of the top clamp and the length of the spacer in the bushings. \\ There are steel caps that cover the bushings. That is your bolt spacer and your torque guide. ((einheit 13 of the XLFORUM  ​http://​xlforum.net/​forums/showthread.php?​t=2005987)) \\ Those washers are '​shouldered'​ to wrap around the outside of the bushing. This keeps them from wallowing around. \\ If the bushings are worn out or the washers are deformed-it'​s a losing battle. \\ You are either gonna have bad vibes or '​rowing'​ bars.+    * The compression of the bushing is dictated by the thickness of the top clamp and the length of the spacer in the bushings. \\ There are steel caps that cover the bushings. That is your bolt spacer and your torque guide. ((einheit 13 of the XLFORUM  ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​188257-handlebar-vibes-solution?​t=2005987)) \\ Those washers are '​shouldered'​ to wrap around the outside of the bushing. This keeps them from wallowing around. \\ If the bushings are worn out or the washers are deformed-it'​s a losing battle. \\ You are either gonna have bad vibes or '​rowing'​ bars.
     * You put enough pressure on them to compress the collars and stop when you see the washers starting to flex. \\ These washers get deformed from people cranking down on the bolts. \\ If the bolts don't fit snugly in the bushings, you need sleeves. \\ You can do this with some kind of metal tubing, heat shrink tubing, electrical tape, or a larger bolt. \\ Ace Hardware has a pretty good selection of bronze, rubber, and neoprene bushings also.      * You put enough pressure on them to compress the collars and stop when you see the washers starting to flex. \\ These washers get deformed from people cranking down on the bolts. \\ If the bolts don't fit snugly in the bushings, you need sleeves. \\ You can do this with some kind of metal tubing, heat shrink tubing, electrical tape, or a larger bolt. \\ Ace Hardware has a pretty good selection of bronze, rubber, and neoprene bushings also. 
  
-  * **You can try and shim the bushings** to get the bolts tight without compressing the bushing too much. ((RussW2 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2005987)) \\ You might try a compression sealing washer from an Evo or other Big Twin spark plug for a shim washer to use on the mounting bolts. \\ You can stack a few of them (two, maybe three per bolt) until you get the right amount of play. \\ Then, torque the bolts to spec and not have the bars feel like they are "​solid"​ rubber mounted.+  * **You can try and shim the bushings** to get the bolts tight without compressing the bushing too much. ((RussW2 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​188257-handlebar-vibes-solution?​t=2005987)) \\ You might try a compression sealing washer from an Evo or other Big Twin spark plug for a shim washer to use on the mounting bolts. \\ You can stack a few of them (two, maybe three per bolt) until you get the right amount of play. \\ Then, torque the bolts to spec and not have the bars feel like they are "​solid"​ rubber mounted.
     *  The bushing shim effectively adds length of the inner sleeve. \\ The shouldered washer then goes over the shims, and you now prevent the over-compression of the rubber bushing. \\ You can torque to spec without distorting the shouldered washers.     *  The bushing shim effectively adds length of the inner sleeve. \\ The shouldered washer then goes over the shims, and you now prevent the over-compression of the rubber bushing. \\ You can torque to spec without distorting the shouldered washers.
  
-|  Bushing shim ((photo by RussW2 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2005987&​page=2)) ​ |+|  Bushing shim ((photo by RussW2 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​188257-handlebar-vibes-solution/​page2?​t=2005987&​page=2)) ​ |
 |{{:​techtalk:​ref:​genmsr:​handlebar_bushing_shim_by_russw2.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​genmsr:​handlebar_bushing_shim_by_russw2.jpg?​direct&​300|}}|
  
   * You can also lesson some vibration in the bars by replacing the stock mounts with polyurethane bushings.   * You can also lesson some vibration in the bars by replacing the stock mounts with polyurethane bushings.
-    * This is a debatable answer however. Some have reported the poly-bushings made the vibes worse. ((Alexintenn of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2005987)) ​+    * This is a debatable answer however. Some have reported the poly-bushings made the vibes worse. ((Alexintenn of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​188257-handlebar-vibes-solution?​t=2005987)) ​
  
-|  Poly bushings on an 09 1200N. ((photo by IronSportMan of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=27701&​page=25)) ​ |+|  Poly bushings on an 09 1200N. ((photo by IronSportMan of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​16552-vibration-problem-solved-check-your-front-engine-mount-bolt/​page25?​t=27701&​page=25)) ​ |
 |{{:​techtalk:​ref:​genmsr:​poly_handlebar_bushings_by_ironsportman.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​genmsr:​poly_handlebar_bushings_by_ironsportman.jpg?​direct&​300|}}|
  
-  * **Adding weight in one form or another the handlebar ends**: \\ With internal weights, fill the bars with enough silicon to fully encase the weight. \\ That way, the weights touch the bars and they harmonize the vibs better. ((flathead45 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=107653)) +  * **Adding weight in one form or another the handlebar ends**: \\ With internal weights, fill the bars with enough silicon to fully encase the weight. \\ That way, the weights touch the bars and they harmonize the vibs better. ((flathead45 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​42228-pennies-in-handlebars?​t=107653)) 
-  - When replacing the grips, you can tape up 2 rolls of pennies (or nickels if they'​ll fit) and slip one inside each handlebar end. ((Old_Goat57 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=45811)) +  - When replacing the grips, you can tape up 2 rolls of pennies (or nickels if they'​ll fit) and slip one inside each handlebar end. ((Old_Goat57 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​27681-nickels-in-the-handlebars?​t=45811)) 
-    * Wrap the rolls in electrical tape (making a solid slug) and then a little dab of RTV on each end to glue them into place. ((Moved On of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=45811&​page=5)) +    * Wrap the rolls in electrical tape (making a solid slug) and then a little dab of RTV on each end to glue them into place. ((Moved On of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​27681-nickels-in-the-handlebars/​page5?​t=45811&​page=5)) 
-    * In adding silicone in the hole, then shoving the pennies in, ((Massdog05 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=45811)), the silicone gives cushion between the pennies and the bar. ((Massdog05 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=45811&​page=3)) \\ As the bar pushes forward (in the course of vibrating), the pennies try to remain still. \\ The silicone between the bar and pennies compresses and elastically collides with the pennies. \\ This lessens the momentum applied to the pennies, thus lessening the forward movement of the bar. \\ Same for the other direction ----> Equals less of the annoying vibrations.+    * In adding silicone in the hole, then shoving the pennies in, ((Massdog05 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​27681-nickels-in-the-handlebars?t=45811)), the silicone gives cushion between the pennies and the bar. ((Massdog05 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-suspension-frame-forks-handlebars-fuel-tank-oil-tank-fenders/​27681-nickels-in-the-handlebars/​page3?​t=45811&​page=3)) \\ As the bar pushes forward (in the course of vibrating), the pennies try to remain still. \\ The silicone between the bar and pennies compresses and elastically collides with the pennies. \\ This lessens the momentum applied to the pennies, thus lessening the forward movement of the bar. \\ Same for the other direction ----> Equals less of the annoying vibrations.
     * It should significantly reduce vibration transmitted to the grips while riding. \\ The thing that this trick does to help with the vibrations is to lower the resonant frequency of the bars so that it doesn'​t buzz your nerves to numbness. \\     * It should significantly reduce vibration transmitted to the grips while riding. \\ The thing that this trick does to help with the vibrations is to lower the resonant frequency of the bars so that it doesn'​t buzz your nerves to numbness. \\
-  -  You can wrap the ends of two steel rods with rubber tape until they fit in the bars snugly (not tight). \\ Cover them with silicone / construction adhesive and shove them in the bars until flush. ((Mark1200 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1687153))+  -  You can wrap the ends of two steel rods with rubber tape until they fit in the bars snugly (not tight). \\ Cover them with silicone / construction adhesive and shove them in the bars until flush. ((Mark1200 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​157642-handlebar-vibration-what-have-yall-done-to-stop-it?​t=1687153))
   - You can buy a set of bar end weights.   - You can buy a set of bar end weights.
-    * [[http://​www.barsnake.com/​|Barsnake]] is a very thick rubber which is installed inside your handlebars to reduce vibration. \\ Available in solid form, or as a liquid which is poured into the bars and then solidifies. ((ron521 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=305328)) +    * [[http://​www.barsnake.com/​|Barsnake]] is a very thick rubber which is installed inside your handlebars to reduce vibration. \\ Available in solid form, or as a liquid which is poured into the bars and then solidifies. ((ron521 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​57852-bolt-on-vibration-dampers?t=305328))
  
 ===== Horn ===== ===== Horn =====
 **Symptom**. \\ **Symptom**. \\
 Front cylinder noise. \\ Front cylinder noise. \\
-May sound like a noisy lifter or piston slap at certain revs. ((imola461 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=34886)) \\ +May sound like a noisy lifter or piston slap at certain revs. ((imola461 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​21131-loud-front-cylinder-noise?t=34886)) \\ 
  
 **Condition**. \\ **Condition**. \\
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 |{{:​techtalk:​ref:​svcproc:​rubber_mount_for_fuel_tank_by_ironmick.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​svcproc:​rubber_mount_for_fuel_tank_by_ironmick.jpg?​direct&​300|}}|
  
-Another source of fuel tank noise is a gas cap that doesn'​t fit tightly. ((83XLX of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=832376 ​)) \\+Another source of fuel tank noise is a gas cap that doesn'​t fit tightly. ((83XLX of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​98047-ironhead-noise#​post2036154)) \\
 You can also push on the tank or the cap while riding to check for noise. \\ You can also push on the tank or the cap while riding to check for noise. \\
 Also, the tank itself will amplify the normal racket when it's near empty, even though it and the cap are tight. \\ Also, the tank itself will amplify the normal racket when it's near empty, even though it and the cap are tight. \\
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 ===== Oil Tank ===== ===== Oil Tank =====
- 
 **Symptom**:​ \\ **Symptom**:​ \\
 Rattling noise on the right side of the bike. \\ Rattling noise on the right side of the bike. \\
  
 **Condition**:​ \\ **Condition**:​ \\
-Loose oil tank cover. ((screndname of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​p=5740152#post5740152)) \\ +Loose oil tank cover. ((screndname of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​196416-what%C2%92s-that-sound/​page3#post4287421)) \\
 You can glue a piece of rubber to the inside of the cover. \\ You can glue a piece of rubber to the inside of the cover. \\
 +
 ====== Noises From Loose Objects ====== ====== Noises From Loose Objects ======
  
 ===== Apparel ===== ===== Apparel =====
-  
 Any loose snaps or buttons on shirts, jackets etc. will flap around in the wind. \\ Any loose snaps or buttons on shirts, jackets etc. will flap around in the wind. \\
 Any of those on or near your helmet can repeatedly slap against it. \\ Any of those on or near your helmet can repeatedly slap against it. \\
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 ===== Helmet ===== ===== Helmet =====
- 
 The snaps holding the visor on the helmet can slap against it in the wind. The snaps holding the visor on the helmet can slap against it in the wind.
 The metal clasp on the chin strap can also do this if you forget to tighten it. \\ The metal clasp on the chin strap can also do this if you forget to tighten it. \\
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 ===== Straps / Hold Downs ===== ===== Straps / Hold Downs =====
- 
 Secure all straps and hold down cords etc. especially when not in use. \\ Secure all straps and hold down cords etc. especially when not in use. \\
 It's best to keep them in a saddlebag or home when not in use. \\ It's best to keep them in a saddlebag or home when not in use. \\
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 During left hand corners, it will scrape the ground. Replacing the spring is pretty simple though. \\ During left hand corners, it will scrape the ground. Replacing the spring is pretty simple though. \\
 When you check the side stand spring, be sure to look at the bushings as well (if applicable). They are also a wear item. ((sportsterpaul of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1964704&​highlight=noises&​page=3)) \\ When you check the side stand spring, be sure to look at the bushings as well (if applicable). They are also a wear item. ((sportsterpaul of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1964704&​highlight=noises&​page=3)) \\
-Have someone hold the bike up, fold the kickstand up and shake it. There should be almost no movement at the pivot. ((Toejam503 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=5699298&​highlight=motor+mount+noise#​post5699298)) \\+Have someone hold the bike up, fold the kickstand up and shake it. There should be almost no movement at the pivot. ((Toejam503 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​194787-1986-1987-owners-kickstand-question?​highlight=motor+mount+noise#​post5699298)) \\
  
 ====== Shrouded Noises ====== ====== Shrouded Noises ======
-With a half helmet and no windshield; ((Gone of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=823082)) \\+With a half helmet and no windshield; ((Gone of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​efi-sportster-motorcycle-talk-2007-and-up/​97463-engine-noise?t=823082)) \\
 Up to 60 MPH it sounds like a hundred or two very busy blacksmith shops. \\ Up to 60 MPH it sounds like a hundred or two very busy blacksmith shops. \\
 Over 60 it was just the wind. \\ Over 60 it was just the wind. \\
 +
 ===== Windshield ===== ===== Windshield =====
 A windshield can direct noises straight at you while riding. \\ A windshield can direct noises straight at you while riding. \\
 It makes them more pronounced where little things sound a lot worse than they are. \\ It makes them more pronounced where little things sound a lot worse than they are. \\
 +
 ===== Helmet ===== ===== Helmet =====
- 
 Helmet style also plays a part in how much noise you here. \\ Helmet style also plays a part in how much noise you here. \\
-  
 A full helmet covers your ears and will mask '​close'​ sounds and how loud sounds are in general. \\ A full helmet covers your ears and will mask '​close'​ sounds and how loud sounds are in general. \\
 (foam mounted on the inside for sound/heat purposes) \\ (foam mounted on the inside for sound/heat purposes) \\
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 ===== Exhaust Pipes ===== ===== Exhaust Pipes =====
- 
 Granted, loud exhaust pipes are part of the Harley experience. \\ Granted, loud exhaust pipes are part of the Harley experience. \\
 However, the louder the pipes are, the harder it is to hear other noises in the engine. \\ However, the louder the pipes are, the harder it is to hear other noises in the engine. \\
- 
  
 ====== Noises After Dropping the Bike ====== ====== Noises After Dropping the Bike ======
- 
 **Symptoms**:​ \\ **Symptoms**:​ \\
 New noises coming from wheel areas. \\ New noises coming from wheel areas. \\
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 **Conditions**:​ \\ **Conditions**:​ \\
 Bent rotors: \\ Bent rotors: \\
-Rocks / debris stuck between the caliper and rotor (especially on gravel driveways). ((brianbbs67 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1844704&​highlight=tire+noise)) \\ +Rocks / debris stuck between the caliper and rotor (especially on gravel driveways). ((brianbbs67 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​172102-so-i-dropped-my-new-bike-and-now?​t=1844704&​highlight=tire+noise)) \\ 
-Caliper knocked loose / damaged. ((Dirt Hill of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1844704&​highlight=tire+noise)) \\ +Caliper knocked loose / damaged. ((Dirt Hill of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​172102-so-i-dropped-my-new-bike-and-now?​t=1844704&​highlight=tire+noise)) \\ 
-Fender rub from bent or tweaked fenders. ((mikeLI_77 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1894772&​highlight=wheel+bearing+noise)) \\+Fender rub from bent or tweaked fenders. ((mikeLI_77 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-drivetrain/​sportster-motorcycle-tires-wheels-and-brakes-aa/​176577-trying-to-identify-a-noise-video-included?​t=1894772&​highlight=wheel+bearing+noise)) \\
  
 ====== Electrical Noises ====== ====== Electrical Noises ======
 +\\
 ===== VOES Switch ===== ===== VOES Switch =====
-The VOES switch makes a chirping sound when it's switching. ((Mojo 5533 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1529681&​highlight=stethoscope&​page=2)) \\+The VOES switch makes a chirping sound when it's switching. ((Mojo 5533 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​141144-off-light-throttle-chirping-sound/​page2?​t=1529681&​highlight=stethoscope&​page=2)) \\
 This is normal. \\ This is normal. \\
  
 ===== Generator Noises ===== ===== Generator Noises =====
- 
 The generator should be 2 or 3 times noisier than the other points. \\ The generator should be 2 or 3 times noisier than the other points. \\
-Generators are notorious for sounding like marbles are clattering around in a bucket. ((fergerburger of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=832376&​page=6)) \\+Generators are notorious for sounding like marbles are clattering around in a bucket. ((fergerburger of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​98047-ironhead-noise/​page6?​t=832376&​page=6)) \\
  
-New, out of the box, generators are a little loud until they are worn in. ((hcrashster of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=5241155&​highlight=stethoscope#​post5241155)) \\+New, out of the box, generators are a little loud until they are worn in. ((hcrashster of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​178616-wiring-complete-and-a-new-gennie?​highlight=stethoscope#​post3818357)) \\
 The bearings, shaft and even the brushes take a few miles to settle down. \\ The bearings, shaft and even the brushes take a few miles to settle down. \\
 Aftermarket generator gear quality is not the highest, or the parent material the gear is machined from for that matter. Aftermarket generator gear quality is not the highest, or the parent material the gear is machined from for that matter.
  
-If the generator is suspect, you could take the genny out. ((Fridge of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=4875150&​highlight=motor+mount+noise#​post4875150)) \\+If the generator is suspect, you could take the genny out. ((Fridge of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​166281-name-that-noise?​highlight=motor+mount+noise#​post3544045)) \\
 Fab a blank off plate to cover the opening and start it and run it for a very short period of time and see if it goes away. \\ Fab a blank off plate to cover the opening and start it and run it for a very short period of time and see if it goes away. \\
- 
  
 ====== Engine Noises ====== ====== Engine Noises ======
-Do this before you do anything else, try to locate the noise before you tear it down. ((flflash of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1775548&​highlight=loose+motor+mount&​page=3)) \\+Do this before you do anything else, try to locate the noise before you tear it down. ((flflash of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​165035-evo-engine-clatter-please-watch-video/​page3?​t=1775548&​highlight=loose+motor+mount&​page=3)) \\
 Determine which side of the engine it's on, then whether its top end, cylinder or crankcase. \\ Determine which side of the engine it's on, then whether its top end, cylinder or crankcase. \\
  
Line 347: Line 332:
 Worn or defective oil pump. \\ Worn or defective oil pump. \\
  
-First response, check for piston skirt, or perhaps lifter damage. ((Dave1200s of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=3188980&​highlight=stethoscope#​post3188980)) \\+First response, check for piston skirt, or perhaps lifter damage. ((Dave1200s of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​113369-ran-oil-low-and-now-clacking-sound?​highlight=stethoscope#​post2380434)) \\
 The lifter rollers will survive on oil mist, except maybe under sustained maximal rpm where the oil provides a bit of cooling. \\ The lifter rollers will survive on oil mist, except maybe under sustained maximal rpm where the oil provides a bit of cooling. \\
  
-If the bike sits for a long period of time, the oil may settle at the bottom of the engine. ((mikeLI_77 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?t=3722)) \\+If the bike sits for a long period of time, the oil may settle at the bottom of the engine. ((mikeLI_77 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​2512-motor-noise?t=3722)) \\
 This may leave the top end with not much oil at all. \\ This may leave the top end with not much oil at all. \\
 The valves and / or lifters could make some noise until the oil pushes them back up. \\ The valves and / or lifters could make some noise until the oil pushes them back up. \\
Line 363: Line 348:
  
 **Conditions**:​ \\ **Conditions**:​ \\
-Split, leaking, missing or obstructed vacuum lines on any of the vacuum operated devices and respective hoses. ((BeezrGeezr of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1819997&​highlight=stethoscope&​page=2)) \\+Split, leaking, missing or obstructed vacuum lines on any of the vacuum operated devices and respective hoses. ((BeezrGeezr of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​169618-strange-noise-coming-from-somewhere-near-carb/​page2?​t=1819997&​highlight=stethoscope&​page=2)) \\
  
- +Visually inspect lines and vacuum operated devices. ((BeezrGeezr of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​169618-strange-noise-coming-from-somewhere-near-carb/​page2?​t=1819997&​highlight=stethoscope&​page=2)) \\
-Visually inspect lines and vacuum operated devices. ((BeezrGeezr of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1819997&​highlight=stethoscope&​page=2)) \\+
 Also inspect any rubber fittings or caps for cracks or splits (especially around Voes or Map sensors, if applicable). \\ Also inspect any rubber fittings or caps for cracks or splits (especially around Voes or Map sensors, if applicable). \\
 You can use a stethoscope to probe any of these areas also. \\ You can use a stethoscope to probe any of these areas also. \\
Line 373: Line 357:
  
 ===== Knock / Ping / Detonation ===== ===== Knock / Ping / Detonation =====
- +Overheating can be caused by poor octane fuel (knocking/​pinging). ((jessearias of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​124708-loud-tapping-front-cyl-exhaust-note-change-help?​highlight=stethoscope#​post2615797)) \\
-Overheating can be caused by poor octane fuel (knocking/​pinging). ((jessearias of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=3539328&​highlight=stethoscope#​post3539328)) \\+
 It does not have to be audibly pinging to be causing damage. \\ It does not have to be audibly pinging to be causing damage. \\
 When it gets to the point where you can hear it, it is pretty severe. \\ When it gets to the point where you can hear it, it is pretty severe. \\
 But, the subtle detonation you do not or barely hear that tears the motor up. \\ But, the subtle detonation you do not or barely hear that tears the motor up. \\
  
-Detonation can and will put a hole in a piston and/or scorch valve landings. ((bitpusher of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=3539328&​highlight=stethoscope#​post3539328)) \\ +Detonation can and will put a hole in a piston and/or scorch valve landings. ((bitpusher of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​124708-loud-tapping-front-cyl-exhaust-note-change-help?​highlight=stethoscope#​post2615797)) \\ 
-It is also most likely to cause damage to the ring landings. ((steelworker of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=3539328&​highlight=stethoscope#​post3539328)) \\+It is also most likely to cause damage to the ring landings. ((steelworker of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​124708-loud-tapping-front-cyl-exhaust-note-change-help?​highlight=stethoscope#​post2615797)) \\
  
 **Symptoms**:​ \\ **Symptoms**:​ \\
 Sounds like a little gnome inside the cylinder tapping the sides with a little hammer. \\ Sounds like a little gnome inside the cylinder tapping the sides with a little hammer. \\
-It's also akin to sounds of marbles in your cylinder. ((Benton of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1575186&​highlight=stethoscope&​page=3)) \\ +It's also akin to sounds of marbles in your cylinder. ((Benton of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​145132-86-sportster-top-end-ticking-please-help/​page3?​t=1575186&​highlight=stethoscope&​page=3)) \\ 
-Detonation sounds (and feels) nothing like valve train noise, normal or oil starved. ((bitpusher of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1510117&​page=2)) \\+Detonation sounds (and feels) nothing like valve train noise, normal or oil starved. ((bitpusher of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-engine-conversions/​139164-more-upper-mechanical-noise-as-engine-gets-hot/​page2?​t=1510117&​page=2)) \\
 A low level knock coming from the cylinders, most noticeable at idle. A low level knock coming from the cylinders, most noticeable at idle.
  
Line 395: Line 378:
 Conversions that are not compatible. Conversions that are not compatible.
  
-Try draining the carb and adding some octane boost to the tank. If the noise goes away, it's detonation. ((jazzman of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1575186&​highlight=stethoscope&​page=3)) \\+Try draining the carb and adding some octane boost to the tank. If the noise goes away, it's detonation. ((jazzman of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​145132-86-sportster-top-end-ticking-please-help/​page3?​t=1575186&​highlight=stethoscope&​page=3)) \\
 If not, check your timing. It may be too advanced. \\ If not, check your timing. It may be too advanced. \\
  
Line 401: Line 384:
 |{{:​techtalk:​ref:​genmsr:​timer_plate_directions_by_hippysmack.jpg?​direct&​400|}}| |{{:​techtalk:​ref:​genmsr:​timer_plate_directions_by_hippysmack.jpg?​direct&​400|}}|
  
-|This piston is just about to break from too much \\ cylinder pressure. This is from a race motor using \\ Nitromethane ((photo by aswracing of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=616889))|Broken piston from detonation. \\ (883/1200 conversion) ((photo by thatdirtykid of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=616889&​highlight=stethoscope))|+|This piston is just about to break from too much \\ cylinder pressure. This is from a race motor using \\ Nitromethane ((photo by aswracing of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​82885-piston-problems-pics?​t=616889))|Broken piston from detonation. \\ (883/1200 conversion) ((photo by thatdirtykid of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​82885-piston-problems-pics?​t=616889&​highlight=stethoscope))|
 |{{techtalk:​ref:​svcproc:​ringland_failure_by_aswracing.jpg?​direct&​300|}}|{{:​techtalk:​ref:​svcproc:​detonated_piston_by_thatdirtykid.jpg?​direct&​300|}}| |{{techtalk:​ref:​svcproc:​ringland_failure_by_aswracing.jpg?​direct&​300|}}|{{:​techtalk:​ref:​svcproc:​detonated_piston_by_thatdirtykid.jpg?​direct&​300|}}|
  
 ===== Backfire ===== ===== Backfire =====
- +Backfiring through the carb is almost always a timing issue. ((doodah man of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​196329-busted-oil-line-now-popping-back-firing#post4285313)) \\
-Backfiring through the carb is almost always a timing issue. ((doodah man of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​p=5737892#post5737892)) \\+
 Backfiring through the exhaust pipes is almost always an issue with leaking O-rings on the manifold. \\ Backfiring through the exhaust pipes is almost always an issue with leaking O-rings on the manifold. \\
- 
  
 ===== Noise Cadence or Rhythm ===== ===== Noise Cadence or Rhythm =====
- +The cadence (timing) of noises can give clues to what part of the engine to inspect. ((Ferrous Head of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​107497-using-a-stethoscope-to-listen-to-the-engine/​page4?​t=977525&​page=4)) \\
-The cadence (timing) of noises can give clues to what part of the engine to inspect. ((Ferrous Head of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=977525&​page=4)) \\+
 Listen to the timing of the noises. \\ Listen to the timing of the noises. \\
 Some things happen at what can be deemed as "full time" while others happen at "half time" or "​quarter time". \\ Some things happen at what can be deemed as "full time" while others happen at "half time" or "​quarter time". \\
Line 421: Line 401:
   * Noise at every two crankshaft revolutions could lend to cam, cam bushing, lifter or valve train problems.   * Noise at every two crankshaft revolutions could lend to cam, cam bushing, lifter or valve train problems.
  
-If need be, you could run a stopwatch and count the number of times you here the noise in a minute. ((wedge of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1535961&​highlight=stethoscope&​page=5)) \\+If need be, you could run a stopwatch and count the number of times you here the noise in a minute. ((wedge of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​141782-engine-noise-i-m-stumped/​page5?​t=1535961&​highlight=stethoscope&​page=5)) \\
 Then compare that to crankshaft rpm to find the actual rhythm of the noise. \\ Then compare that to crankshaft rpm to find the actual rhythm of the noise. \\
-===== Rocker Box ===== 
  
 +===== Rocker Box =====
 **Symptoms**. \\ **Symptoms**. \\
 Ticking or tapping sound. \\ Ticking or tapping sound. \\
Line 442: Line 422:
  
 **Condition**:​ \\ **Condition**:​ \\
-Bad umbrella valves. ((rejeanprimeau of the XLFORUM  ​http://​xlforum.net/​forums/showthread.php?​t=1822701&​highlight=stethoscope&​page=4))+Bad umbrella valves. ((rejeanprimeau of the XLFORUM  ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​169843-whine-chirping-sound-like-a-bird-in-my-intake-or-carb/​page4?​t=1822701&​highlight=stethoscope&​page=4))
  
 ===== Heads ===== ===== Heads =====
- 
 **Symptoms**:​ \\ **Symptoms**:​ \\
-A whine and chirping sound like a bird in the intake or carb. ((conv90 of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1822701&​highlight=stethoscope)) \\+A whine and chirping sound like a bird in the intake or carb. ((conv90 of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​169843-whine-chirping-sound-like-a-bird-in-my-intake-or-carb?​t=1822701&​highlight=stethoscope)) \\
  
 **Condition**:​ \\ **Condition**:​ \\
Line 456: Line 435:
  
 **Symptom**:​ \\ **Symptom**:​ \\
-Clanking at the head / cylinder joint. ((rottenralph of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1120515&​highlight=stethoscope&​page=2)) \\+Clanking at the head / cylinder joint. ((rottenralph of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​frame-mount-evo-sportster-talk-1986-2003-models/​116484-how-long-should-it-take-to-pump-oil-to-rocker-boxs/​page2?​t=1120515&​highlight=stethoscope&​page=2)) \\
  
 **Condition**:​ \\ **Condition**:​ \\
 Loose head bolt. \\ Loose head bolt. \\
- 
  
 ===== Pistons ===== ===== Pistons =====
Line 467: Line 445:
  
 **Condition**:​ \\ **Condition**:​ \\
-  * Piston slap is usually caused from too little piston to valve clearance where the valve(s) end up hitting the top of the piston. It can be a slight tap or a hard knock depending on how little clearance between the piston and valve affected.+  * Piston slap is usually caused from too little piston to valve clearance where the valve(s) end up hitting the top of the piston. ​\\ It can be a slight tap or a hard knock depending on how little clearance between the piston and valve affected.
   * It is also possible for the piston to hit the head(s) in the wrong circumstances and cause a tap or knocking noise. \\   * It is also possible for the piston to hit the head(s) in the wrong circumstances and cause a tap or knocking noise. \\
  
Line 475: Line 453:
     * The force from impact of piston to valve contact can be transferred through the rocker arm to pushrod→cam (and bearings/​bushings)→pinion shaft gear→beyond.     * The force from impact of piston to valve contact can be transferred through the rocker arm to pushrod→cam (and bearings/​bushings)→pinion shaft gear→beyond.
       * On 88-up models, the weakest link may be the woodruff key on the pinion shaft that can shear from impact.       * On 88-up models, the weakest link may be the woodruff key on the pinion shaft that can shear from impact.
-    * Impact can  damage the valve guide which can lead to oil gunk on the valve stem.Upon cold startup, the gunked up oil on the stem locks it in place. ((BlackBikeDave of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1877254&​highlight=noises&​page=4)) \\+    * Impact can  damage the valve guide which can lead to oil gunk on the valve stem.Upon cold startup, the gunked up oil on the stem locks it in place. ((BlackBikeDave of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​174956-loud-clanking-on-startup/​page4?​t=1877254&​highlight=noises&​page=4)) \\
   * From piston to head impact:   * From piston to head impact:
     * Possible cracked head or busted piston / rings, increased heat etc. \\     * Possible cracked head or busted piston / rings, increased heat etc. \\
Line 483: Line 461:
     * Can be caused from cams being installed out of time.     * Can be caused from cams being installed out of time.
     * Can be caused from too long of pushrods or adjustable pushrods out of adjustment (being too long) especially after installing high lifts cams.     * Can be caused from too long of pushrods or adjustable pushrods out of adjustment (being too long) especially after installing high lifts cams.
-    * Also, a spun pinion gear (88-up) will set your timing off and both intake and exhaust valves can hit the pistons and bend valves and pushrods. ((wedge of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1877254&​highlight=noises&​page=3))+    * Also, a spun pinion gear (88-up) will set your timing off and both intake and exhaust valves can hit the pistons and bend valves and pushrods. ((wedge of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​174956-loud-clanking-on-startup/​page3?​t=1877254&​highlight=noises&​page=3))
       * A spun pinion gear is usually caused from the woodruff key shearing and the pinion gear turned off it's timing mark, throwing the cams out of time.       * A spun pinion gear is usually caused from the woodruff key shearing and the pinion gear turned off it's timing mark, throwing the cams out of time.
     * Can be caused by worn/​damaged rod bearings or flywheels out of true. \\     * Can be caused by worn/​damaged rod bearings or flywheels out of true. \\
-    * Testing: Place a stethoscope on the exhaust flange to listen for piston slap. ((wedge of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=5730989&​highlight=listen#​post5730989)) \\ If it is piston to valve contact, it will most likely show up on the exhaust flange. \\ You would need to touch the stethoscope probe directly to the flange. You can also test the intake port. \\+    * Testing: Place a stethoscope on the exhaust flange to listen for piston slap. ((wedge of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​196070-knocking-noise-in-front-cylinder?​highlight=listen#​post4276290)) \\ If it is piston to valve contact, it will most likely show up on the exhaust flange. \\ You would need to touch the stethoscope probe directly to the flange. You can also test the intake port. \\
   * From piston to head impact:   * From piston to head impact:
     * Can be caused by worn/​damaged rod bearings or flywheels out of true.     * Can be caused by worn/​damaged rod bearings or flywheels out of true.
-    * Can be caused from using a flywheel assembly from a previously destroyed engine without inspecting rod bearings and runout. +    * Can be caused from improper installation. \\ Using a flywheel assembly from a previously destroyed engine without inspecting rod bearings and runout. \\ Always rotate the crank while the jugs are off and check for smooth feel and check up and down play in the rods. \\ It helps to have a quiet atmosphere. Dump oil on the bearings and listen all the way around in neutral. \\ Then spin it over by hand in before buttoning up. You can check the squish band dim with solder
-    * Also, if the squish band has a layer of soot thick enough to touch the piston, it'll make piston slap noises. ((norseXL of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1575186&​highlight=stethoscope&​page=2))+    * Also, if the squish band has a layer of soot thick enough to touch the piston, it'll make piston slap noises. ((norseXL of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​145132-86-sportster-top-end-ticking-please-help/​page2?​t=1575186&​highlight=stethoscope&​page=2))
  
 In the video below, the flywheel assembly from previous engine damage was used WITHOUT inspecting further damage to the assembly. \\ In the video below, the flywheel assembly from previous engine damage was used WITHOUT inspecting further damage to the assembly. \\
 While the exact cause is not known on the new build, you can hear the piston making contact with the head in the video. \\ While the exact cause is not known on the new build, you can hear the piston making contact with the head in the video. \\
  
-|  Short video (L) and Pics of a 2000 Sportster with rear piston hitting the head. ((video and photos courtesy of groovemeisterus of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2079724&​page=5)) ​ |||+|  Short video (L) and Pics of a 2000 Sportster with rear piston hitting the head. ((video and photos courtesy of groovemeisterus of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​202540-reasons-why-new-piston-rings-would-seize-in-fresh-rebuild/​page5?​t=2079724&​page=5)) ​ |||
 |{{:​video:​piston_slap_on_2000_sportster_by_groovemeisterus.mp4|}}| {{:​techtalk:​ref:​genmsr:​piston_slap_-_piston_to_head_contact_pic1_by_groovemeisterus.jpg?​direct&​280|}}| {{:​techtalk:​ref:​genmsr:​piston_slap_-_piston_to_head_contact_pic2_by_groovemeisterus.jpg?​direct&​280|}}| |{{:​video:​piston_slap_on_2000_sportster_by_groovemeisterus.mp4|}}| {{:​techtalk:​ref:​genmsr:​piston_slap_-_piston_to_head_contact_pic1_by_groovemeisterus.jpg?​direct&​280|}}| {{:​techtalk:​ref:​genmsr:​piston_slap_-_piston_to_head_contact_pic2_by_groovemeisterus.jpg?​direct&​280|}}|
  
-|  Light witness marks from piston contact with valve. ((photos by BlackBikeDave of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1877254&​highlight=noises&​page=4)) ​ |||+|  Light witness marks from piston contact with valve. ((photos by BlackBikeDave of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​174956-loud-clanking-on-startup/​page4?​t=1877254&​highlight=noises&​page=4)) ​ |||
 |{{:​techtalk:​ref:​genmsr:​piston_slap_1_by_blackbikedave.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_2_by_blackbikedave.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_5_by_blackbikedave.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​genmsr:​piston_slap_1_by_blackbikedave.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_2_by_blackbikedave.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_5_by_blackbikedave.jpg?​direct&​300|}}|
  
-|  Heavy witness marks from piston contact with valve. ((photos by 04xl1200c of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1836174)) ​ |||+|  Heavy witness marks from piston contact with valve. ((photos by 04xl1200c of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​rubber-mount-sportster-motorcycle-talk-2004-2006/​171129-04-1200c-40k-mi-engine-failure?​t=1836174)) ​ |||
 |{{:​techtalk:​ref:​genmsr:​piston_slap_2_by_04xl1200c.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_1_by_04xl1200c.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_3_by_04xl1200c.jpg?​direct&​300|}}| |{{:​techtalk:​ref:​genmsr:​piston_slap_2_by_04xl1200c.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_1_by_04xl1200c.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​piston_slap_3_by_04xl1200c.jpg?​direct&​300|}}|
 +\\
  
 **Symptoms**:​ \\ **Symptoms**:​ \\
Line 508: Line 487:
  
 **Conditions**:​ \\ **Conditions**:​ \\
-A mis-aligned crankshaft can result in piston skirt slapping at the case opening. ((rejeanprimeau of the XLFORUM  ​http://​xlforum.net/​forums/showthread.php?​t=1535961&​highlight=stethoscope)) \\ +A mis-aligned crankshaft can result in piston skirt slapping at the case opening. ((rejeanprimeau of the XLFORUM  ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​141782-engine-noise-i-m-stumped?​t=1535961&​highlight=stethoscope)) \\ 
-Bearing issue: Knocking really beats the pistons, rings and bearings up. ((jessearias of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?p=3539328&​highlight=stethoscope#​post3539328)) \\+Bearing issue: Knocking really beats the pistons, rings and bearings up. ((jessearias of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-motor-top-end/​124708-loud-tapping-front-cyl-exhaust-note-change-help?​highlight=stethoscope#​post2615797)) \\
 You may have beat a rod bearing into submission. \\ You may have beat a rod bearing into submission. \\
 Typically, stock crank pins and rod bearings are the weakest point in a sportster lower end. \\ Typically, stock crank pins and rod bearings are the weakest point in a sportster lower end. \\
  
 ===== Connecting Rods / Crankshaft / Flywheels ===== ===== Connecting Rods / Crankshaft / Flywheels =====
 +Connecting rod bearing failures generally exhibit noise, visible clearance indications,​ piston to valve contact, and/or secondary damage in the form of a high levels of steel debris circulating through the engine. Verify that one or more of these symptoms is present and quantified prior to attempting to qualify the rod bearing condition. ((HD Tech Article TA0023 dated 4-27-2018)) \\
  
 **Symptoms**:​ \\ **Symptoms**:​ \\
-A loud rod rapping sound up top. ((smokenjoep01 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=3928178&​highlight=stethoscope#​post3928178)) ​\\ +A loud rod rapping sound up top. ((smokenjoep01 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=3928178&​highlight=stethoscope#​post3928178)) It also may have a whirling sound. \\ 
-It also may have a whirling sound. \\ +It may sound like the noise is half the speed of the engine RPM (if counting both cylinder lopes). But it's actually at 1 revolution speed. \\
-It may sound like the noise is half the speed of the engine RPM (if counting both cylinder lopes). ​\\ +
-But it's actually at 1 revolution speed. \\+
 Rod noise should be loudest when the engine is floating (not accelerating and not decelerating)as in cruising down the highway. ((milmat1 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=1902363&​highlight=stethoscope#​post1902363)) \\ Rod noise should be loudest when the engine is floating (not accelerating and not decelerating)as in cruising down the highway. ((milmat1 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=1902363&​highlight=stethoscope#​post1902363)) \\
 That's when the rods have the least pressure holding them against the bearing surface. \\ That's when the rods have the least pressure holding them against the bearing surface. \\
-Check the piston pin fit.  
  
-**Condition**:​ +**Condition**:​ Wrist pin bushing failure. ​\\ 
-Wrist pin bushing failure. \\+**Verification**:​ Remove the wrist pins and check pin to bushing clearance and also roundness of bushing itself. \\ 
 + 
 +**Condition**:​ Rod bearing failure. \\ 
 +**Verification**:​ Check for up and down movement of each rod at several points of it's rotation. \\ 
 +Removing the pistons and grabbing each rod bypasses the error factor of piston side play. \\ 
 +Also, you can hold the rod just under the piston with one hand like choking a chicken and pull up on it. ((wedge of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5916266#​post5916266)) \\ 
 +Then use your other hand in a fist to hit the top of piston like a hammer action. A bad crank will make a very loud knocking sound as you do it. \\ 
 +Henceforth known as the "Wedge Test". \\ 
 + 
 + 
 + 
 +In the (L) video below, you can hear the rapping at 1:1 engine speed. \\ 
 +The (R) video is a bearing test as described by XLForum member "​wedge"​ and performed by XLForum member "​onadraw"​. \\ 
 +|  Video: Lower front rod bearing failure ((video by onadraw of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5970640#​post5970640)) ​ |  Video: The "Wedge Test" for bearing failure. ((video by onadraw of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5970640#​post5970640)) ​ | 
 +|{{ :​video:​connecting_rod_noise_-_rapping_lower_front_rod_by_onadraw.mp4 |}}|{{ :​video:​connecting_rod_noise_-_testing_lower_rod_bearings_by_onadraw.mp4 |}}| 
 +\\
  
 **Symptom**:​ \\ **Symptom**:​ \\
Line 537: Line 529:
 Engine shakes bad enough to tear up some parts. \\ Engine shakes bad enough to tear up some parts. \\
  
-**Condition**: ​\\ +**Condition**:​ Flywheels are out of true. This can crack the cases in short order. ((mrmom9r of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4610630&​highlight=motor+mount+noise#​post4610630)) \\
-Flywheels are out of true. This can crack the cases in short order. ((mrmom9r of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4610630&​highlight=motor+mount+noise#​post4610630)) \\+
 If fly wheels were out of balance, it'd vibrate like hell all the time even sitting still just raising the rpm's. ((ezmerf of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4610630&​highlight=motor+mount+noise#​post4610630)) \\ If fly wheels were out of balance, it'd vibrate like hell all the time even sitting still just raising the rpm's. ((ezmerf of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4610630&​highlight=motor+mount+noise#​post4610630)) \\
 +**Verification**:​ Check pinion shaft runout. \\
  
  
Line 660: Line 652:
 The primary is a big hollow chamber and it will amplify any noise coming from anywhere in the engine. ((KevinJ of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=3399889&​highlight=stethoscope#​post3399889)) \\ The primary is a big hollow chamber and it will amplify any noise coming from anywhere in the engine. ((KevinJ of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=3399889&​highlight=stethoscope#​post3399889)) \\
  
-Primary Chain: \\ +  ​* **Symptom: Whining or Chirping Noise** \\ A primary chain that's adjusted too tight can make a whining or chirping noise. Reportedly, the chirping noise can come on after some full throttle and hard shifting when the primary chain is too tight / bike hot. ((Gcram399 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1529681&​highlight=stethoscope&​page=2)) ​\\ **Condition:​ Chain out of adjustment** \\ One method of adjusting a tight primary chain: With the bike hot and running in neutral, loosen the nut, turn the adjuster in until it starts to whine, then back it off 1/4 turn. ((wedge of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1529681&​highlight=stethoscope)) Then ride it and make sure it's not whining any longer. ​\\ 
-**Symptoms**\\ +  * **Symptom: ​Rattling noise**. \\ A rattle that you cannot adjust out is a sign of a stretched chain. ((bitpusher of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1178157&​highlight=stethoscope&​page=2))If your primary chain is too tight, that can cause a vibration that is felt in the pegs. ((semjpm of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=27701&​page=27)) \\ **Condition:​ Stretched Chain** 
-A primary chain that's adjusted too tight can make a whining or chirping noise. ​\\ +  * **Symptom: Rattling or Squeaking Noise**. \\ The sprocket nut can work loose and the noise is from the rotor eating itself up on the crank splines. If it's bad enough, it can end up breaking the end of the crankshaft off. ((JstColli of the XLFORUM ​ http://​xlforum.net/​forums/​showthread.php?​p=3399889&​highlight=stethoscope#​post3399889)) \\ **Condition:​ Loose sprocket nut**. ​ \\ 
-Reportedly, the chirping noise can come on after some full throttle and hard shifting when the primary chain is too tight / bike hot. ((Gcram399 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1529681&​highlight=stethoscope&​page=2)) \\ +  * **Symptom: Squeaking Noise**. \\ A squeaking noise seemingly from the area of the generator. ((jmmarks70 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1786179&​highlight=motor+mount+noise&​page=2)) \\ **Condition:​ Loose / damaged chain adjuster**.
-Rattling noise. \\ +
-A rattle that you cannot adjust out is a sign of a stretched chain. ((bitpusher of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1178157&​highlight=stethoscope&​page=2)) ​\\ +
-If your primary chain is too tight, that can cause a vibration that is felt in the pegs. ((semjpm of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=27701&​page=27)) \\+
  
-**Condition**\\ +|  75 primary adjuster damage. ((photos by jmmarks70 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1786179&​highlight=motor+mount+noise)) ​ ||| 
-Chain out of adjustment\\+|{{:​techtalk:​ref:​genmsr:​75_primary_adjuster_damage_1_by_jmmarks70.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​75_primary_adjuster_damage_2_by_jmmarks70.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​75_primary_adjuster_damage_3_by_jmmarks70.jpg?​direct&​230|}}|
  
-One method of adjusting a tight primary chain: ((wedge of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1529681&​highlight=stethoscope)) \\ +\\
-With the bike hot and running in neutral, loosen the nut, turn the adjuster in until it starts to whine, then back it off 1/4 turn. \\ +
-Then ride it and make sure it's not whining any longer. ​\\+
  
-Sprocket Nut: \\+  * **SymptomRattling Noise**. ​\\ Conv90 submitted video of noise from the primary side: \\ 
 +{{:​video:​buell_noise_video_by_conv90.mp4|}}
  
-**Symptom**\\ +  * **Symptom: Rattling Noise**\\ The tensioner shoe can be loose and rock side to side enough to sound like a lifter problem. It will rock fore and aft into the primary cover. \\ From the cam side of the bike, it'll sound like it's a lifter bouncing around. It's a slow intermittent hollow banging ​noise. It may only make noise at idle when the chain is least tight. \\ 
-Rattling ​noise. \\+    * **Condition:​ Loose Primary Chain Adjuster Shoe**. \\ Below is a short video by Conv90 of the XLFORUM showing the hollow noise created.
  
-**Condition**\\ +{{:video:primary_chain_adjuster_shoe_noise_by_conv90.mp4|}}
-Loose sprocket nut. ((JstColli of the XLFORUM ​ http://​xlforum.net/​forums/​showthread.php?​p=3399889&​highlight=stethoscope#​post3399889)) \\+
  
-The sprocket nut can work loose and the noise is from the rotor eating itself up on the crank splines. \\ +\\
-If it's bad enough, it can end up breaking the end of the crankshaft off. \\+
  
-**Symptom**\\ +  * **Symptom: ​An extra and constant ​noise inside ​of the primary case**. \\ An extra and constant noise inside of the primary case (even / after adjustment of the primary chain adjuster). ((Spor-T-1 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=29865)) \\ **Condition:​ Loose compensator nut / flywheel sprocket shaft nut**. \\ Once the sprocket on that shaft gets loose enough, it will chew the end of your fly wheel. ((dodgenbullets of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=29865)) If this is the case your motor must come out and the cases split to fix it. \\
-Squeaking ​noise seemingly from the area of the generator. ((jmmarks70 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1786179&​highlight=motor+mount+noise&​page=2)) \\ +
- +
-**Condition**:​ \\ +
-Loose / damaged chain adjuster. \\ +
- +
-|  75 primary adjuster damage. ((photos by jmmarks70 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1786179&​highlight=motor+mount+noise)) ​ ||| +
-|{{:​techtalk:​ref:​genmsr:​75_primary_adjuster_damage_1_by_jmmarks70.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​75_primary_adjuster_damage_2_by_jmmarks70.jpg?​direct&​300|}}|{{:​techtalk:​ref:​genmsr:​75_primary_adjuster_damage_3_by_jmmarks70.jpg?​direct&​230|}}| +
- +
- +
-**Symptom**:​ \\ +
-An extra and  constant noise inside of the primary case (even / after adjustment of the primary chain adjuster). ((Spor-T-1 of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=29865)) \\ +
- +
-**Condition**\\ +
-Loose compensator nut / flywheel sprocket shaft nut. \\ +
-Once the sprocket on that shaft gets loose enough, it will chew the end of your fly wheel. ((dodgenbullets of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=29865)) ​\\ +
-If this is the case your motor must come out and the cases split to fix it. \\+
  
 ====== Transmission / Clutch ====== ====== Transmission / Clutch ======