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techtalk:evo:oil02 [2022/09/10 03:52] hippysmack [Cam Cover \ Gasket] |
techtalk:evo:oil02 [2024/01/05 00:20] hippysmack |
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| * The lifters supply oil pressure to the rocker boxes. | * The lifters supply oil pressure to the rocker boxes. | ||
| - | | 86-90 main oil feed path ((photos by Mini_blitz of the XLFORUM, labeled by Hippysmack http://xlforum.net/forums/showthread.php?t=1974615&page=3)) || | + | | 86-90 main oil feed path ((photos by Mini_blitz of the XLFORUM, labeled by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/183493-1986-evolution-sportster-cam-cover-install-help/page3?t=1974615&page=3)) || |
| |{{:techtalk:evo:oil:86-90_right_case_main_oil_feed_path_by_mini_blitz.jpg?direct&300|}}|{{:techtalk:evo:oil:86_cam_cover_main_oil_feed_path_by_mini_blitz.jpg?direct&300|}}| | |{{:techtalk:evo:oil:86-90_right_case_main_oil_feed_path_by_mini_blitz.jpg?direct&300|}}|{{:techtalk:evo:oil:86_cam_cover_main_oil_feed_path_by_mini_blitz.jpg?direct&300|}}| | ||
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| ====== Bottom End Oiling ====== | ====== Bottom End Oiling ====== | ||
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| - | ===== Cam Oiling ===== | ||
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| - | * Oil flows off the pushrod side of the rocker boxes through the pushrod covers, into vertical holes in the lifter bores and into the gearcase. | ||
| - | * Oil falls on the cam lobes on the way down this hole. | ||
| - | * Some of this oil is transferred between the gear teeth. | ||
| - | * The rear intake (#2) cam gets a little oil spray from the right case oil feed galley through the small orifice underneath the open cavity in the case. | ||
| - | * That oil is transferred between the teeth of the cams. | ||
| - | * Oil flung off the cams lands in the gearcase to be collected into the scavenge (return) side of the oil pump. | ||
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| - | Below are pics of the restricted orifice underneath the oil feed galley in the case that shoots a small stream onto #2 cam. \\ | ||
| - | #2 cam rotates counterclockwise and the oil is sprayed on the right side of the cam gear for extra cooling. | ||
| - | | (L) 92-99 ((photo by Hippysmack of the XLFORUM)), (R) 2000 Up ((photo by Bruce of the XLFORUM http://xlforum.net/forums/showthread.php?t=1118529&page=2up)) cam oiling hole from the feed galley || | ||
| - | | {{:techtalk:evo:oil:92-99_cam_oiler_hole_by_hippysmack.jpg?direct&300|}} |{{:techtalk:evo:oil:2000_up_cam_oiler_hole_by_bruce.jpg?direct&300|}}| | ||
