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techtalk:evo:engmech03 [2020/02/25 03:17] hippysmack [Gaskets] |
techtalk:evo:engmech03 [2020/06/06 02:27] hippysmack [Pistons & Rods] |
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|{{:techtalk:evo:engmech:stock88-03xl1200pistonweight_by_aswracing.jpg?direct&200|}}|{{:techtalk:evo:engmech:stock04-upxl1200pistonweight_by_aswracing.jpg?direct&200|}}| | |{{:techtalk:evo:engmech:stock88-03xl1200pistonweight_by_aswracing.jpg?direct&200|}}|{{:techtalk:evo:engmech:stock04-upxl1200pistonweight_by_aswracing.jpg?direct&200|}}| | ||
====== Pistons & Rods ====== | ====== Pistons & Rods ====== | ||
+ | |||
+ | The piston pin clips used on all Evolution models changed in color from silver to bronze during the 1992 season. \\ | ||
+ | This was a manufacturing request for visual verification of installation during assembly. \\ | ||
+ | The part number was changed from 22589-83 to 22589-83A. The changed occurred in production approximately in September of 1991. ((HD Tech Tip $TT030 dated July of 1992)) \\ | ||
+ | |||
|{{:techtalk:evo:engmech:piston_pin_lock_ring_22589-83b_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:engmech:piston_pin_lock_ring_22589-83b_by_hippysmack.jpg?direct&300|}}| | ||
====== Rocker Arms ====== | ====== Rocker Arms ====== | ||
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[[techtalk:ref:svcproc26|See more on the squish band here]] in the REF section of the Sportsterpedia. \\ | [[techtalk:ref:svcproc26|See more on the squish band here]] in the REF section of the Sportsterpedia. \\ | ||
- | + | ===== Base Gasket ===== | |
+ | 04-up: | ||
+ | Harley base gasket (HD 16789-04) measures .014" in thickness and comes in the top end kit (HD 17049-08). \\ | ||
+ | Cometic has .010" and .020" thick base gaskets. \\ | ||