Differences

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--- techtalk:evo:engmech02 [2019/02/14 04:34]
hippysmack [06-Up Anti-Rotation Device]
+++ techtalk:evo:engmech02 [2019/09/23 19:49]
hippysmack [Pinion Gear]
@@ Line 3: / Line 3: @@
 ====== Camshafts ======
-===== Cam Specs =====
+===== Cam Specs - OEM & SE =====
 {{:techtalk:evo:engmech:camspecs-d-w-se-chart.jpg|400}}
@@ Line 15: / Line 15: @@
 |C ((MMI Evolution Cam Specs dated 10/5/92))|.278"|1°ATDC|42° ABDC|225°|.280"|42° BBDC|3° ATDC|225°|4°|
-==== Comparing Andrews and OEM Cam Grinds ====
+==== Comparing OEM and Andrews Cam Grinds ====
-These figures are from the Sportster Evolution Cams PDF from Andrews Products.
+These figures are from the Sportster Evolution Cams PDF from Andrews Products. ((Page25 - http://www.bigboarv-twin.com/wp-content/uploads/2015/07/Andrews-Products-Catalogue-20141.pdf))
-|Grind|Timing \\ @ .053" Lift|CL|Duration @ \\ .053" Lift|Durarion @ \\ .020" Lift|Max Lift|TDC Lift|
+|Grind|I/E|Timing \\ @ .053" Lift|CL|Duration @ \\ .053" Lift|Durarion @ \\ .020" Lift|Max Lift|TDC Lift|
-|W|10°/28°|99°|218°|256°|.474"|.122"|
+|W|I|10°/28°|99°|218°|256°|.474"|.122"|
-|W|38°/16°|101°|234°|272°|.474"|.138"|
+|:::|E|38°/16°|101°|234°|272°|.474"|.138"|
-|N-4|30°/46°|98°|256°|296°|.490"|.216"|
+|N4|I|30°/46°|98°|256°|296°|.490"|.216"|
-|N-4|52°/24°|104°|256°|296°|.490"|.189"|
+|:::|E|52°/24°|104°|256°|296°|.490"|.189"|
-CL = Centerline
+I/E = Intake/Exhaust --- CL = Centerline
+\\
+Thanks to Maxeffort of the XLForum for the following Flywheel Degree Charts of these various cams.((Maxeffort at this post: http://xlforum.net/forums/showthread.php?t=2074322))
+The measurements are based on the .053 lift specs. Also, take note that the predominance of the intake valve opening occurs on one rotation of the flywheel and the predominance of the exhaust valve opening occurs on the next rotation of the flywheel. It takes two full rotations (720°) of the flywheel to complete the four-cycle process. (This view of the flywheel would be from the right side of the engine.)
+\\
+{{:techtalk:evo:engmech:camwheel-hdw-218-234-474-maxeffort.jpg?400|}}   {{:techtalk:evo:engmech:camwheel-hdd-223-223-458-maxeffort.jpg?400|}}
+\\
+{{:techtalk:evo:engmech:camwheel-an4-256-256-490-maxeffort.jpg?400|}}   {{:techtalk:evo:engmech:camwheel-an2-240-244-465-440-maxeffort.jpg?400|}}
+\\
+{{:techtalk:evo:engmech:camwheel-h560-256-266-560-maxeffort.jpg?400|}}   {{:techtalk:evo:engmech:camwheel-h570-240-250-570-maxeffort.jpg?400|}}
+\\
+{{:techtalk:evo:engmech:camwheel-rs567-253-253-567-maxeffort.jpg?400|}}   {{:techtalk:evo:engmech:camwheel-rs575-244-244-575-maxeffort.jpg?400|}}
+\\
 ===== Removing / Installing Evo Cams =====
 ===== Sub Documents =====
@@ Line 78: / Line 104: @@
 ====== Tappets (lifters) ======
+==== 86-90 models ====
+{{:techtalk:evo:engmech:86_engine_8_by_xtremraptor.jpg?direct&300|}} ((photo by xtremraptor of the XLFORUM)) {{:techtalk:evo:engmech:86_engine_4_by_xtremraptor.jpg?direct&300|}} ((photo by xtremraptor of the XLFORUM)) \\
 ====== Hydraulic Lifters ======
+===== Sub-Documents =====
+  * [[techtalk:evo:engmech02b|91-99 Lifter Pin Upgrade to 00-05 Lifter Pin Screws]]
+See also in the REF section of the Sportsterpedia:
+  * [[techtalk:ref:svcproc16|Hydraulic Lifter - Disassembly / Inspection / Assembly]]
 There was a running change to new style hydraulic lifters in 1986 for Sportsters. ((1986-1990 HD Sportster FSM pg 3-44)) \\
 They were the same as those used in 1340cc engines beginning in the 1986 model year. \\
@@ Line 121: / Line 157: @@
 |  91-99 anti-rotation pin hardware ((photos by Hippysmack))  |||
 |{{:techtalk:evo:engmech:anti-rotation_pin_hardware_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:anti-rotation_pin_hardware_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:anti-rotation_pin_o-ring_by_hippysmack.jpg?direct&300|}}|
+|  App. pin dims ((photos by Hippysmack))  ||
+|{{:techtalk:evo:engmech:91-99_anti-rotation_pins_7_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_anti-rotation_pins_8_by_hippysmack.jpg?direct&300|}}|
+|  App. pin plate dims ((photos by Hippysmack))  |||
+|{{:techtalk:evo:engmech:91-99_anti-rotation_pins_9_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_anti-rotation_pins_10_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:91-99_anti-rotation_pins_11_by_hippysmack.jpg?direct&300|}}|
 |  Slide the pins in the holes, install the O-rings over the pins. ((photos by Hippysmack))  |||
@@ Line 147: / Line 189: @@
 **Torque**: 55-65 in. lbs. (6.2-7.3 Nm) ((04 HD Sportster FSM pg 3-7)) \\
-| 00-05 anti-rotation screws ((photo by Hoppysmack))  |  End of screws run up into the case. ((photos by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=6))  ||
+|  00-05 anti-rotation screws ((photo by Hoppysmack))  |  App dims  (photos by Hippysmack))  ||
-|{{:techtalk:evo:engmech:00-05_anti-rotation_pins_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:05_tappet_screws_1_by_johnk.jpg?direct&300|}}|{{:techtalk:evo:oil:05_tappet_screws_2_by_johnk.jpg?direct&300|}}|
+|{{:techtalk:evo:engmech:00-05_anti-rotation_pins_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:00-05_anti-rotation_pins_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:00-05_anti-rotation_pins_3_by_hippysmack.jpg?direct&300|}}|
+|  End of screws run up into the case. ((photos by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=6))  ||
+|{{:techtalk:evo:oil:05_tappet_screws_1_by_johnk.jpg?direct&300|}}|{{:techtalk:evo:oil:05_tappet_screws_2_by_johnk.jpg?direct&300|}}|
 ===== 06-Up Anti-Rotation Device =====
@@ Line 158: / Line 203: @@
 These work OK for stock cams. \\
-But if you're upgrading to bigger cams, anything more than .600 lift has too small a base circle. \\
+But if you're upgrading to bigger cams, anything more than .600 lift has too small a base circle. ((rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?p=5613140&highlight=anti+rotation#post5613140)) \\
 (and they will nearly drop out of the ARDs and they can also spin away from them) \\
 The big issue is that they turn sideways with the roller not turning on the cam lobe. \\
@@ Line 165: / Line 210: @@
 |  ARD block ((photo by rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=1768265&page=31))  |  ARD block installed ((photo by chris_b_owens of the XLFORUM http://xlforum.net/forums/showthread.php?p=5042968))  |
 |{{:techtalk:evo:engmech:06_ard_by_rocketmangb.jpg?direct&300|}}|{{:techtalk:evo:engmech:2013_ard_by_chris_b_owens.jpg?direct&300|}}|
-===== Lifter Anti-Rotation =====
-Anti-roll pins / blocks (respectively) are designed to keep roller lifters from turning sideways during operation. \\
-A roller that's turned sideways does not roll. ((NRHS Sales of the XLFORUM http://xlforum.net/forums/showthread.php?t=1768265&page=29)) \\
-{{:techtalk:evo:engmech:99-00_anti-rotation_pin_comparison_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:evo:engmech:99-00_anti-rotation_pin_comparison_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
 ====== Pinion Gear ======
@@ Line 189: / Line 224: @@
 XL Pinion Gear Color/Size Info here:
 http://xlforum.net/forums/showthread.php?t=1963918
+The woodruff key on the pinion shaft has ben subject to shearing. \\
+There is a bronze oil pump gear available which is considered an upgrade but that won't stop the key from shearing. \\
+What happens is the crank develops a little run-out (especially when the power level is raised). ((http://xlforum.net/forums/showthread.php?t=1666277 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666277)) \\
+This causes the teeth of the steel oil pump drive gear to wear badly on one side. \\
+Generally, 180° from the worn teeth (front of tooth pitch) you'll see almost no wear at all so you have to inspect all the way around the gear (rear tooth pitch). \\
+If you see them sharpening like the above photo, you're on borrowed time. \\
+When one of these steel gears fails, it's really ugly and makes a mess and can damage a lot of other things as well. \\
+The bronze gear solves the problem nicely though. It's a Buell piece that came out in 2006. \\
+This was a much worse problem on Buells due to the higher power levels. \\
+But at 65hp, it's not nearly so big of an issue, so HD never bothered to put them in XL's probably due to cost. \\
+It's a good upgrade when hopping up an XL and it's cheap insurance against a catastrophic failure. \\
+You'll need a tool to lock the pinion gear for removal or installation. \\
+It's very important to hold the crank still from this side (not the primary side) when torquing the pinion nut. \\
+If you, for example, put the bike in gear and hold the rear brake and torque on the nut, you run the very real risk of knocking the crank out of true. \\
+It's not designed to transmit torque from one side to the other and it tries to twist the crankpin connection. \\
+Now, with respect to the key shearing, it's a very common issue particularly when heavy valve springs are used. \\
+The caption describes the fix, Loctite red and 70ft-lbs instead of the factory specified 50ft-lbs. You won't have this issue again. \\
+{{:techtalk:evo:engmech:pinion_nub_by_aswracing.jpg?direct&250|}} ((photo by http://xlforum.net/forums/showthread.php?t=1666277 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1666277)) \\
 ====== Timing Cup (Rotor) ======

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