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techtalk:ref:engmech07h [2020/10/08 19:36]
hippysmack [Oil Drainback and Supplemental Air Intake from Breather Valves]
techtalk:ref:engmech07h [2023/12/26 20:42] (current)
hippysmack
Line 40: Line 40:
 The 85 cover has the breather baffle tube system but the principles are the same and it doesn'​t appear the drain hole size changed. \\ The 85 cover has the breather baffle tube system but the principles are the same and it doesn'​t appear the drain hole size changed. \\
  
-|77 Cam Cover Breather Compartment \\ (no oil drainback). ((photo by joynny77 ​of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=610444&​page=4))|81 Cam Cover Breather Compartment \\ (w / rubber umbrella valve upgrade) \\ Oil drainback hole in dimple. ((photo by joynny77 ​of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=610444&​page=4))|85 cam cover w / baffle tube system. \\ Oil drainback in dimple. ((photo by billeuze of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=1103082))|+|77 Cam Cover Breather Compartment \\ (no oil drainback). ((photo by jonny77 ​of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​82366-foo-foo-gone-or-was-it-ever-there-do-i-need-it/​page3?​t=610444&​page=4))|81 Cam Cover Breather Compartment \\ (w / rubber umbrella valve upgrade) \\ Oil drainback hole in dimple. ((photo by jonny77 ​of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​82366-foo-foo-gone-or-was-it-ever-there-do-i-need-it/​page4?​t=610444&​page=4))|85 cam cover w / baffle tube system. \\ Oil drainback in dimple. ((photo by billeuze of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-era-specific-and-model-specific/​ironhead-sportster-motorcycle-talk-1957-1985/​115252-cam-fitment-question-on-ih-help-me-out-plz?​t=1103082))|
 |{{:​techtalk:​ih:​engmech:​1977_crankcase_breather_compartment_by_johnny77.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​1981_crankcase_breather_compartment_w_update_rubber_valve_by_johnny77.jpg?​direct&​300|}}|{{:​techtalk:​ih:​oil:​85_cam_cover_1_by_billeuze.jpg?​direct&​300|}} | |{{:​techtalk:​ih:​engmech:​1977_crankcase_breather_compartment_by_johnny77.jpg?​direct&​300|}}|{{:​techtalk:​ih:​engmech:​1981_crankcase_breather_compartment_w_update_rubber_valve_by_johnny77.jpg?​direct&​300|}}|{{:​techtalk:​ih:​oil:​85_cam_cover_1_by_billeuze.jpg?​direct&​300|}} |
  
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 The assembly was cut open in the pics below revealing the separation chamber and the drain hole. \\  The assembly was cut open in the pics below revealing the separation chamber and the drain hole. \\ 
  
-|  View of one cut open. ((photos by Bored now of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​p=5761087#post5761087))  ||  Oil drain hole. ((photo by dieselvette of the XLFORUM ​http://​xlforum.net/​forums/showthread.php?​t=2073932&​page=30)) ​ |+|  View of one cut open. ((photos by Bored now of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-general-discussion-and-problems/​197352-oil-cap-problems-bikers-choice-02-073/​page2#post4317318))  ||  Oil drain hole. ((photo by dieselvette of the XLFORUM ​https://www.xlforum.net/​forum/sportster-motorcycle-forum/​sportster-motorcycle-motor-engine/​sportster-motorcycle-bottom-end/​197307-sportster-crankcase-pressure-engine-breathing-wetsumping-and-mods/​page30?​t=2073932&​page=30)) ​ |
 |{{:​techtalk:​evo:​engmech:​04_up_breather_1_by_bored_now.jpg?​direct&​300|}}|{{:​techtalk:​evo:​engmech:​04_up_breather_2_by_bored_now.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​04_up_breather_valve_2_by_dieselvette.jpg?​direct&​300|}}| |{{:​techtalk:​evo:​engmech:​04_up_breather_1_by_bored_now.jpg?​direct&​300|}}|{{:​techtalk:​evo:​engmech:​04_up_breather_2_by_bored_now.jpg?​direct&​300|}}|{{:​techtalk:​ref:​engmech:​04_up_breather_valve_2_by_dieselvette.jpg?​direct&​300|}}|