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techtalk:evo:engmech01f [2019/11/27 22:18] hippysmack [Installation] |
techtalk:evo:engmech01f [2019/11/27 22:22] hippysmack [#2 Cam - Cover Seal (86-03)] |
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| ====== Gaskets / Seals ====== | ====== Gaskets / Seals ====== | ||
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| + | 91 and up Sportster engines have an internal rifling hole drilled into the lower left side of the case running past the left side of the oil pump. \\ | ||
| + | That extra hole (in the picture below) is benign and doesn't need a hole in the gasket to match. \\ | ||
| + | That hole is purely an artifact of how they connected two passages for routing crankcase oil up to the oil pump's scavenge section. \\ | ||
| + | They drill that hole to connect the two passages, and then it gets blocked off naturally by the cam box cover and gasket. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=2036109&highlight=oil+pump&page=3)) \\ | ||
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| + | Also, in 2000, the factory changed the oil routing to the lifters to make manufacturing the cases easier. \\ | ||
| + | The newer cam cover on the left in the pic below and has two extra grooves along the top. \\ | ||
| + | These grooves let oil get to the lifters. \\ | ||
| + | If you have an older style gasket, it will not have cutouts for the grooves and you won't get oil to the lifters. \\ | ||
| + | |||
| + | | Rubbermount Evo vs Rigid Evo Cam Cover Internals ((photo by Moved On of the XLFORUM http://xlforum.net/forums/showthread.php?t=87313)) | | ||
| + | |{{:techtalk:evo:oil:rubbermount_vs_rigid_evo_cam_cover_comparison_by_moved_on.jpg?direct&600|}}| | ||
| + | | Both have been chopped on the outside but the gearcase perimeter is intact on them for reference. | | ||
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| + | | 91-99 cam cover gasket ((photo by Hippysmack)) | 91-99 cam cover seals off the extra hole. ((photos by Hippysmack)) || | ||
| + | |{{:techtalk:evo:oil:91-99_cam_cover_gasket_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-99_cam_cover_gasket_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:91-99_cam_cover_gasket_4_by_hippysmack.jpg?direct&300|}}| | ||
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| + | | 2000-up cam cover gasket ((photo by Phillober of the XLFORUM http://xlforum.net/forums/showthread.php?t=1122547&page=7)) |2000 up gasket seals off the extra hole. ((sep69 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2036109&highlight=oil+pump&page=3))| | ||
| + | |{{:techtalk:evo:oil:2000_up_cam_cover_gasket_by_phillober.jpg?direct&300|}}|{{:techtalk:evo:oil:cam_cover_gasket_on_03_model_by_sep69.jpg?direct&300|}}| | ||
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| ===== #2 Cam - Cover Seal (86-03) ===== | ===== #2 Cam - Cover Seal (86-03) ===== | ||
| Seal number (11124): \\ | Seal number (11124): \\ | ||
