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--- techtalk:evo:engmech02a [2018/08/19 19:53]
hippysmack [Installing Evo Cams]
+++ techtalk:evo:engmech02a [2024/01/03 18:47] (current)
hippysmack
@@ Line 9: / Line 9: @@
     - Or (with the cam cover off), use a 15/16" wrench on the pinion gear nut \\ (__**only with the transmission in neutral AND the spark plugs removed**__). \\ Turning the pinion side against compression and tranny gearing can result in mis-aligned flywheels.
-{{:techtalk:evo:engmech:spinning_the_engine_over_by_mrcfjf.jpg?direct&400|}} ((photo by mrcfjf of the XLFORUM http://xlforum.net/forums/showthread.php?t=46716)) \\
+{{:techtalk:evo:engmech:spinning_the_engine_over_by_mrcfjf.jpg?direct&400|}} ((photo by mrcfjf of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/28194-andrews-n4-cam-alignment-probs?t=46716)) \\
-|The pinion gear has a notch on one of the teeth. \\ Rotate the notch to point towards the center of \\ the #2 cam hole. ((photo by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=6))|It may not be easy to get it to settle straight on. At \\ this location, the piston is rising to about 3 teeth \\ before TDC (exhaust stroke). It's too far right in the \\ this pic. ((photo by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=6))|And too far left in this one. While rolling the engine \\ backward to align the mark, the weight of the \\ rod / piston adds a small amount of motion force to \\ a small turn of the wrench or rear tire. ((photo by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=6))|
+|The pinion gear has a notch on one of the teeth. \\ Rotate the notch to point towards the center of \\ the #2 cam hole. ((photo by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page6?t=1122547&page=6))|It may not be easy to get it to settle straight on. At \\ this location, the piston is rising to about 3 teeth \\ before TDC (exhaust stroke). It's too far right in the \\ this pic. ((photo by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page6?t=1122547&page=6))|And too far left in this one. While rolling the engine \\ backward to align the mark, the weight of the \\ rod / piston adds a small amount of motion force to \\ a small turn of the wrench or rear tire. ((photos by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page6?t=1122547&page=6))|
 |{{:techtalk:evo:engmech:installing_evo_cams_11_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:installing_evo_cams_9_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:installing_evo_cams_10_by_phillober.jpg?direct&300|}}|
 ==== Inspect the Pinion Gear Mark and Keyway Slot ====
-To be sure where the mark should be on the pinion gear, look at the keyway on the shaft. The key and the correct tooth should be in line with each other. ((NRHS Sales of the XLFORUM http://xlforum.net/forums/showthread.php?t=944843&page=52)) \\
+To be sure where the mark should be on the pinion gear, look at the keyway on the shaft. The key and the correct tooth should be in line with each other. ((NRHS Sales of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/105751-installing-the-90-nrhs/page52?t=944843&page=52)) \\
 The mark on the gear is a visual aid only and it represents the position of the pinion shaft. \\ So, it can also be said that the keyway on the pinion shaft should line up with the center of #2 cam.
-|In the case where the slot in the gear is too wide, this could slightly change the positioning of the gear and \\ then how the marks line up on the cams. ((photos by Hippysmack))||The mark on this aftermarket pinion gear is wrongly \\ etched between the gears instead of on the gear. ((photo by meherdad_it of the XLFORUM http://xlforum.net/forums/showthread.php?t=944843&page=51))|
+|In the case where the slot in the gear is too wide, this could slightly change the positioning of the gear and \\ then how the marks line up on the cams. ((photos by Hippysmack))||The mark on this aftermarket pinion gear is wrongly \\ etched between the gears instead of on the gear. ((photo by meherdad_it of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/105751-installing-the-90-nrhs/page51?t=944843&page=51))|
 |{{:techtalk:evo:engmech:pinion_shaft_key_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:pinion_gear_-_shaft_alignment_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:cam_and_pinion_marks_factory_misaligned_by_meherdad_it.jpg?direct&300|}}|
 ===== Installing the Cams =====
+\\
 ==== Checklist ====
+  * Read the Service Manual prior to performing any work! ((Turbota of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/18835-installing-cams-how-to-with-pics?t=31258))
-  * Read the Service Manual prior to performing any work! ((Turbota of the XLFORUM http://xlforum.net/forums/showthread.php?t=31258))
   * Make sure the cams are clean and free of debris prior to installation (brake cleaner works well for this).
   * Lube the cam journals and bores before installing them. \\ You can wait until the cams are in place to lube the gears but this needs to be done as well to help lube them until oil pressure can get to them.
@@ Line 34: / Line 31: @@
   * There is only a very small clearance between the camshaft and the bushing. \\ If there is any binding, do not force the cam in. The steel shaft can damage the brass bushing. Pull it back out and try again.
+{{:techtalk:evo:engmech:gearcase_cam_location_by_phillober.jpg?direct&400|}} Cam hole identification in the gearcase: ((photo by Phillober, annotated by Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page6?t=1122547&page=6)) \\
-{{:techtalk:evo:engmech:gearcase_cam_location_by_phillober.jpg?direct&400|}} Cam hole identification in the gearcase: ((photo by Phillober, annotated by Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=6)) \\
+==== Cam Timing Mark Identification ====
+**Note**: If your cams have “V” markings on them, disregard those markings. The “V” markings on the cams are not used for timing Sportsters. ((Turbota of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/15776-setting-cam-timing?t=26379)) {{:techtalk:evo:engmech:cam_markings_by_bsaman.jpg?direct&400|}} ((photo by bsaman of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/87731-important-info-on-installing-cams/page2?t=693559&page=2)) {{:techtalk:evo:engmech:cam_timing_by_austinxl.jpg?direct&400|}} ((photo by AustinXL 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/158859-cam-timing?t=1701132))
-==== Cam Identification ====
+Here's a Buell Blast (single cylinder) using the 'V' timing marks on the cams. ((photo by soulhamster of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/128008-retarded-se551-cams/page3?t=1321505&page=3)) \\
+{{:techtalk:evo:engmech:buell_v_mark_on_cams_by_soulhamster.jpg?direct&500|}}
-**Note**: If your cams have “V” markings on them, disregard those markings. The “V” markings on the cams are not used for timing Sportsters. ((Turbota of the XLFORUM http://xlforum.net/forums/showthread.php?t=26379)) {{:techtalk:evo:engmech:cam_markings_by_bsaman.jpg?direct&400|}} ((photo by bsaman of the XLFORUM http://xlforum.net/forums/showthread.php?t=693559&page=2)) {{:techtalk:evo:engmech:cam_timing_by_austinxl.jpg?direct&400|}} ((photo by AustinXL of the XLFORUM http://xlforum.net/forums/showthread.php?t=1701132))
 ==== Working Around the Lifters If Installed ====
   * Obviously, it's easier to have the lifters removed and out of the way when installing cams. \\ However, it's not a real issue with the lifters installed. They will probably have to be raised up slightly so the cam lobes clear them on installation.
   * Just make sure the lifters have been primed and pumped up with oil before buttoning up the cam chest.
 |It is common practice to leave them soaking in clean oil (same as you'll be using) while removed.||
-|{{:techtalk:evo:engmech:soaking_the_lifters_1_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:soaking_the_lifters_2_by_phillober.jpg?direct&300|}}| ((photos by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=2))
+|{{:techtalk:evo:engmech:soaking_the_lifters_1_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:soaking_the_lifters_2_by_phillober.jpg?direct&300|}}| ((photos by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page2?t=1122547&page=2))
-|Bring each cam up to it's bushing and align it straight \\ before attempting to slide it in.|The lifter hangs down below the cam lobe \\ camshaft lobe ((photo by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=6))|A telescoping magnet can be useful to hold them \\ out of the way ((photo by Hippysmack))|
+|Bring each cam up to it's bushing and align it straight \\ before attempting to slide it in.|The lifter hangs down below the cam lobe \\ camshaft lobe ((photo by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page6?t=1122547&page=6))|A telescoping magnet can be useful to hold them \\ out of the way ((photo by Hippysmack))|
 |{{:techtalk:evo:engmech:installing_evo_cams_0_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:installing_evo_cams_1_by_phillober.jpg?direct&300|}}|{{:techtalk:ref:tools:magnet_for_holding_up_lifters_1_by_hippysmack.jpg?direct&300|}}|
 Or, the lifter can be bumped a little while the cam is on it's base circle as in below.
-|Roll the cam around to it's base (small) circle end, slip the shaft under the lifter and turn the dot where it needs to be ((photos by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=6))|||
+|Roll the cam around to it's base (small) circle end, slip the shaft under the lifter and turn the dot where it needs to be ((photos by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page6?t=1122547&page=6))|||
 |{{:techtalk:evo:engmech:installing_evo_cams_2_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:installing_evo_cams_3_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:engmech:installing_evo_cams_4_by_phillober.jpg?direct&300|}}|
@@ Line 64: / Line 61: @@
 That's all there is to it. It's not any more complicated than that. \\
 If you turn the crank to where the mark is pointing to the center of the #2 cam, the piston position is decided for you. \\ You can't move the mark on the pinion gear independently of the piston position. \\
-They are mechanically connected (pinion gear-crankshaft-connecting rods-pistons). ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1612106&page=2))
+They are mechanically connected (pinion gear-crankshaft-connecting rods-pistons). ((aswracing 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/148399-cam-issue/page2?t=1612106&page=2))
 Exactly where the piston is positioned when you've got the pinion mark pointing to the center of the #2 cam is totally irrelevant. \\
 It happens to not be TDC on either cylinder. \\
-But the piston position is not your reference point, the mark on the pinion gear is your reference point. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1612106&page=2))
+But the piston position is not your reference point, the mark on the pinion gear is your reference point. ((aswracing 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/148399-cam-issue/page2?t=1612106&page=2))
 The cam markings are defined as (in the middle of a cycle) not at TDC. \\
@@ Line 75: / Line 71: @@
 All four cams are installed as described in the service manual and as illustrated below without rotating the cylinders. \\
 Then when the engine is rotated to TDC, the valves will be opened and closed at the right time. \\
-All cams are mechanically aligned based on the placement as in the pictures below. ((IXL2Relax of the XLFORUM http://xlforum.net/forums/showthread.php?t=1612106&page=4))
+All cams are mechanically aligned based on the placement as in the pictures below. ((IXL2Relax 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/148399-cam-issue/page4?t=1612106&page=4))
-All you have to do is line up the dots on the gears. ((steelworker of the XLFORUM http://xlforum.net/forums/showthread.php?t=695947&page=3))
+All you have to do is line up the dots on the gears. ((steelworker 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/87877-cam-install-help/page3?t=695947&page=3))
 ==== Checklist ====
   * **Caution**: \\ The dots on the cams correspond to the cam lobe positioning in relation to the crankshaft, pistons and valves. \\ Cam lobes open / close the valves at the proper 'time' and in relation to the rise and fall of the pistons. \\ All dots must line up properly. \\ Incorrect cam timing can result in engine damage from the valves opening / closing out of sync. \\ [[techtalk:evo:engmech02a#damage_pics_from_incorrect_cam_timing|Some damage pics from this can be seen below.]]
@@ Line 87: / Line 82: @@
 ==== Cam Placement and Arrangement ====
   * #1 and #3 cams should go in first. The order of these two are unimportant as long as the dots are aligned properly.
 |**#1** cam dot faces the center of the #2 cam bore|**#3** has two dots. Each dot faces toward the center \\ of the two adjacent cam bores (#2 and #4 respectively). \\ The dots won't line up correctly installed upside down.|
 |{{:techtalk:evo:engmech:installing_evo_cams_5_by_phillober.jpg?direct&400|}}|{{:techtalk:evo:engmech:installing_evo_cams_6_by_phillober.jpg?direct&400|}}|
+| 86-90 cam alignment ((photo by iwntobliku of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/30032-cam-install?t=50047))|
+|{{:techtalk:evo:engmech:89_cams_lined_up_by_iwntobliku.jpg?direct&400|}}|
   * #4 cam can be installed at any time after #3 is in place and it's the least of the worries of installing incorrectly (outside of checking that the cam number is correct).
@@ Line 104: / Line 99: @@
 ==== The Exact Position of the Timing Marks May Have To Be Interpreted ====
+  * Sometimes, the cam marks leave room for interpretation as in don't quite line up dead bang. \\ The root cause of the problem is the clearance between the camshafts and their respective bushings. \\ Without the cover in place, the cams hang down some. \\ Some hang down more than others because they have less support. \\ It's particularly bad on the #1 cam, as pictured, because the #1 cam sags down and the #2 cam doesn't (it's supported by the pinion gear). \\ And, you're relying on a mark on the #1 cam that's not directly on the teeth. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/87731-important-info-on-installing-cams?t=693559))
+  * If it's advanced a tooth, you'll lose power by opening the exhaust too early, essentially dumping power right out the exhaust before it's done pushing on the piston. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/87731-important-info-on-installing-cams/page3?t=693559&page=3)) You may even make your pipes glow red. You'll also lose a lot of overlap, meaning you'll lose exhaust augmentation of intake flow, again costing power.
+  * If it's retarded a tooth, you'll likely get valve to piston contact. The piston chases the exhaust valve closed, and if the valve is that late getting closed, the piston will likely catch it. If you're using cams with very little overlap to begin with, say "D" cams, you might get away with it, but with most any performance oriented grind, you don't have that much margin.
-  * Sometimes, the cam marks leave room for interpretation as in don't quite line up dead bang. \\ The root cause of the problem is the clearance between the camshafts and their respective bushings. \\ Without the cover in place, the cams hang down some. \\ Some hang down more than others because they have less support. \\ It's particularly bad on the #1 cam, as pictured, because the #1 cam sags down and the #2 cam doesn't (it's supported by the pinion gear). \\ And, you're relying on a mark on the #1 cam that's not directly on the teeth. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=693559))
+{{:techtalk:evo:engmech:cam_alignment_by_hippysmack.jpg?direct&400|}} ((photo by Hippysmack)) {{:techtalk:evo:engmech:cam_timing_2_by_austinxl.jpg?direct&400|}} ((photo by AustinXL 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/158859-cam-timing?t=1701132))
-{{:techtalk:evo:engmech:cam_alignment_by_hippysmack.jpg?direct&400|}} ((photo by Hippysmack)) {{:techtalk:evo:engmech:cam_timing_2_by_austinxl.jpg?direct&400|}} ((photo by AustinXL of the XLFORUM http://xlforum.net/forums/showthread.php?t=1701132))
   * With #2 being in a fixed location against the pinion gear and #1 cam sagging a bit, the gears between the two stay in mesh. \\ But, due to gravity and the cams not being supported by the cover just yet, #1 cam can 'roll' or sag slightly in it's bore. \\ This makes it look off center with #2 cam centerline. ((Hippysmack))
-  * In reality, you have two gear connections that are plainly visible and really leave no room for interpretation: ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1336391&highlight=cam+alignment))
+  * In reality, you have two gear connections that are plainly visible and really leave no room for interpretation: ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/128634-are-these-cams-timed-correctly?t=1336391&highlight=cam+alignment))
     - Pinion gear to Cam #2.
     - Cam #3 to cam #4.
@@ Line 117: / Line 113: @@
     - Cam #2 to cam #3.
-===== Before Installing the Cam Cover =====
+**Another consideration**:
+The position of the mark on the pinion gear to line up #2 cam is straight across from the slot in the back of the gear. \\
+This slot can be widened with wear and not line up perfectly with the keyway on the pinion shaft. \\
+The key is actually what #2 cam should line up with. \\
+So if the pinion gear is off a little from the woodruff key location, the cams can appear not to line up perfectly together (even though they are). \\
+So while lining up the pinion gear and #2 cam, there may be a fudge factor there also to consider when the dots aren't lined up perfectly. \\
+You can see that the pinion gear is installed to the right of the center of the slot in the third pic below. \\
-|Lube the cover bushings and the cam gears and shafts. ((photos by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=7))||
+{{:techtalk:evo:engmech:pinion_gear_keyway_clearance_by_grind_-_labeled_by_hippysmack.jpg?direct&300|}} ((photo by ~Grind~ of the XLFORUM, labeled by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/134422-~grinds~-hammer-performance-1250-build?t=1448694)) \\
+|  Be in mind of the woodruff key location in the pinion gear slot. ((photos by ~Grind~ of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/134422-~grinds~-hammer-performance-1250-build?t=1448694))  |||
+|{{:techtalk:evo:engmech:pinion_gear_alignment_on_woodruff_key_1_by_grind.jpg?direct&300|}}|{{:techtalk:evo:engmech:pinion_gear_alignment_on_woodruff_key_2_by_grind.jpg?direct&300|}}|{{:techtalk:evo:engmech:pinion_gear_alignment_on_woodruff_key_3_by_grind.jpg?direct&300|}}|
+===== Before Installing the Cam Cover =====
+|Lube the cover bushings and the cam gears and shafts. ((photos by Phillober of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/116696-phillober-s-1250-conversion-thread-pic-heavy/page7?t=1122547&page=7))||
 |{{:techtalk:evo:engmech:installing_evo_cams_12_by_phillober.jpg?direct&400|}}|{{:techtalk:evo:engmech:installing_evo_cams_13_by_phillober.jpg?direct&400|}}|
-===== Damage Pics From Incorrect Cam Timing =====
+|Some like more than others but the more lube, the better. \\ Just be sure not to put thick lube in the pinion shaft hole and block the oil path. ((photo by chris_b_owens of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/171908-2013-883-cafe-hammer-performance-1250-conversion/page4?t=1843303&page=4))||
+|{{:techtalk:evo:engmech:cam_gears_installed_1_by_chris_b_owens.jpg?direct&400|}}|{{:techtalk:evo:engmech:cam_gears_installed_2_by_chris_b_owens.jpg?direct&400|}}|
-|All dots on the cams are correct but the pinion gear and #2 cam marks were out of alignment. ((photos by groovemeisterus of the XLFORUM http://xlforum.net/forums/showthread.php?t=322680&page=6))||Resulting in bent intake pushrods and valves ((photo by groovemeisterus of the XLFORUM http://xlforum.net/forums/showthread.php?t=322680&page=4))|
+===== Damage Pics From Incorrect Cam Timing =====
+|All dots on the cams are correct but the pinion gear and #2 cam marks were out of alignment. ((photos by groovemeisterus of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/59164-i-think-i-screwed-up-with-new-cam-install/page6?t=322680&page=6))||Resulting in bent intake pushrods and valves ((photo by groovemeisterus of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/59164-i-think-i-screwed-up-with-new-cam-install/page4?t=322680&page=4))|
 |{{:techtalk:evo:engmech:misaligned_cam-piniongear_marks_2_by_groovemeisterus.jpg?direct&300|}}|{{:techtalk:evo:engmech:misaligned_cam-piniongear_marks_1_by_groovemeisterus.jpg?direct&300|}}|{{:techtalk:evo:engmech:bent_intake_pushrods_by_groovemeisterus.jpg?direct&300|}}|
 ===== Some useful links on cam installation =====
   * [[http://www.hammerperf.com/ttxlcaminstall.shtml|Installing XL Cams]] from Hammer Performance. AKA, more than you ever wanted to know about installing cams in an XL. (aswracing)
   * [[http://www.nrhsperformance.com/tech_xlcaminstall.shtml|XL Camshaft Installation]] from NRHS Performance
+  * [[https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/46550-everything-you-ever-wanted-to-know-about-cams?t=171329&highlight=wanted+cams|XLFORUM thread on cam specs]].

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