Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
techtalk:evo:engmech02 [2019/02/14 04:24] hippysmack [06-Up Anti-Rotation Device] |
techtalk:evo:engmech02 [2019/02/18 02:03] hippysmack [Lifter Anti-Rotation] |
||
|---|---|---|---|
| Line 79: | Line 79: | ||
| ====== Tappets (lifters) ====== | ====== Tappets (lifters) ====== | ||
| ====== Hydraulic Lifters ====== | ====== 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)) \\ | 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. \\ | They were the same as those used in 1340cc engines beginning in the 1986 model year. \\ | ||
| Line 156: | Line 163: | ||
| The ARD is a flexible piece of plastic that is designed to flex in operation to allow for an imperfect lifter bore location. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1768265&page=28)) \\ | The ARD is a flexible piece of plastic that is designed to flex in operation to allow for an imperfect lifter bore location. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1768265&page=28)) \\ | ||
| It is designed for lifters that have a flat cut on each side. \\ | It is designed for lifters that have a flat cut on each side. \\ | ||
| + | |||
| + | 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. ((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. \\ | ||
| + | (which can heat up and destroy the roller and the cam lobe) \\ | ||
| | 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)) | | | 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|}}| | |{{: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 ====== | ====== Pinion Gear ====== | ||
