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| techtalk:ih:engmech07 [2023/12/20 18:55] – [L1984-1990 Breather Valve] hippysmack | techtalk:ih:engmech07 [2025/08/01 19:23] (current) – [L1984-1990 Breather Valve] hippysmack |
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| * [[techtalk:ref:engmech07g|Further Study of the Timed Breather Valve]] | * [[techtalk:ref:engmech07g|Further Study of the Timed Breather Valve]] |
| * [[techtalk:ref:engmech07i|Dissecting the 77-78 Breather (foo-foo) Valve (24634-77)]] | * [[techtalk:ref:engmech07i|Dissecting the 77-78 Breather (foo-foo) Valve (24634-77)]] |
| * [[techtalk:ref:engmech07s|XR-750 8-Ball Breather Valve]] | * [[techtalk:ref:engmech07s|XR-750 Breather Valves]] |
| * [[techtalk:ref:engmech05|Breather Venting / Relocation]] | * [[techtalk:ref:engmech05|Breather Venting / Relocation]] |
| * [[techtalk:ref:oil10#refoiling_lubrication|Wet Sumping]] | * [[techtalk:ref:oil10#refoiling_lubrication|Wet Sumping]] |
| * [[techtalk:ref:oil05#engine_and_primary_oil_system_modifications|Engine and Primary Oil System Modifications]] | * [[techtalk:ref:oil05#engine_and_primary_oil_system_modifications|Engine and Primary Oil System Modifications]] |
| * [[techtalk:ref:engmech07|IH Crankcase Pressure and Engine Breathing]] | * [[techtalk:ref:engmech07|IH Crankcase Pressure and Engine Breathing]] |
| | * [[techtalk:ih:oil01#transfer_valve_76_and_earlier|Transfer Valve]] (1957-1976 engines) |
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| * The generator was moved and an oil filter was mounted in it's place. The oil slinger system was deleted for L84-up models. | * The generator was moved and an oil filter was mounted in it's place. The oil slinger system was deleted for L84-up models. |
| * The crankcase breather valve was redesigned to incorporate a baffle tube assembly (26917-84) with a rubber umbrella valve inside it. | * The crankcase breather valve was redesigned to incorporate a baffle tube assembly (26917-84) with a rubber umbrella valve inside it. |
| | * The plastic assembly is just pushed in with no other locking mechanisms. It is removed by pulling it out although it may be a tight pull. |
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| The pic on the left shows the breather line coming out at the 10 o'clock position going up to the air cleaner. \\ | The pic on the left shows the breather line coming out at the 10 o'clock position going up to the air cleaner. \\ |
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| |{{:techtalk:evo:oil:breather_baffle_tube_by_gary_e.jpg?direct&300|}}|{{:techtalk:evo:oil:86_crankcase_vent_3_by_norsexl.jpg?direct&300|}}| | |{{:techtalk:evo:oil:breather_baffle_tube_by_gary_e.jpg?direct&300|}}|{{:techtalk:evo:oil:86_crankcase_vent_3_by_norsexl.jpg?direct&300|}}| |
| | Breather Baffle Tube (26917-84) ((photo by Gary E of the XLFORUM http://xlforum.net/forums/showthread.php?t=2071387&page=8http://xlforum.net/forums/showthread.php?t=2071387&page=8)) | Cap, tube and umbrella ((photo by norseXL of the XLFORUM http://xlforum.net/forums/showthread.php?t=72099&page=25)) | | | Breather Baffle Tube (26917-84) ((photo by Gary E of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/195092-rigid-evo-oil-check-ball-spring/page8?t=2071387&page=8)) | Cap, tube and umbrella ((photo by norseXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/36799-installing-the-ultimate-crankcase-vent-%C2%93how-to%C2%94/page25?t=72099&page=25)) | |
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| ===== 1979-1990 Breather Valve Replacement Options / Mods ===== | ===== 1979-1990 Breather Valve Replacement Options / Mods ===== |
