Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
Next revision Both sides next revision
techtalk:evo:engmech07 [2019/08/12 03:34]
hippysmack [Check the breather to gasket seal]
techtalk:evo:engmech07 [2019/11/14 04:35]
hippysmack [Crankcase Ventilation]
Line 31: Line 31:
 91 and up engines vent through a valve in each rocker box and out the hollow breather bolts in each head. \\ 91 and up engines vent through a valve in each rocker box and out the hollow breather bolts in each head. \\
  
-{{:​techtalk:​evo:​engmech:​86-90_cc_pressure_drawing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack)) {{:​techtalk:​evo:​engmech:​86-90_engine_crankcase_breathing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack))+{{:​techtalk:​evo:​engmech:​a86-90_cc_pressure_drawing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack)) {{:​techtalk:​evo:​engmech:​a86-90_engine_crankcase_breathing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack))
  
-{{:​techtalk:​evo:​engmech:​91_and_up_cc_pressure_drawing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack)) {{:​techtalk:​evo:​engmech:​91-up_engine_crankcase_breathing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack))+{{:​techtalk:​evo:​engmech:​a91_and_up_cc_pressure_drawing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack)) {{:​techtalk:​evo:​engmech:​a91-up_engine_crankcase_breathing_by_hippysmack.jpg?​direct&​300|}} ((drawing by Hippysmack))
  
 ====== Late 1984-1990 Engine Breathing ====== ====== Late 1984-1990 Engine Breathing ======
Line 135: Line 135:
 |{{:​techtalk:​evo:​oil:​breather_valves_by_dk_custom.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:​evo:​oil:​breather_valves_by_dk_custom.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|}}|
  
-|  ​Breather Valves Installed ​((photo by chris_b_owens ​of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1832762&page=47))  |  2006 Breather Valves ((photos by JackAttack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4435889)) ​ || +|  ​Oil drain hole. ((photo by dieselvette ​of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&page=30))  |  2006 Breather Valves ((photos by JackAttack of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=4435889)) ​ || 
-|{{:​techtalk:​evo:oil:2013_crankcase_breather_4_by_chris_b_owens.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​06_rocker_box_removal_9_by_jackattack.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​06_rocker_box_removal_8_by_jackattack.jpg?​direct&​300|}}|+|{{:​techtalk:​ref:engmech:04_up_breather_valve_2_by_dieselvette.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​06_rocker_box_removal_9_by_jackattack.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​06_rocker_box_removal_8_by_jackattack.jpg?​direct&​300|}}| 
 + 
 +|  2013 Breather Valves ((photos by chris_b_owens of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1832762&​page=47)) ​ ||| 
 +|{{:​techtalk:​evo:​oil:​2013_crankcase_breather_2_by_chris_b_owens.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​2013_crankcase_breather_1_by_chris_b_owens.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​2013_crankcase_breather_4_by_chris_b_owens.jpg?​direct&​300|}}| 
  
-|  2013 Breather Valves ((photos by chris_b_owens of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=1832762&​page=47)) ​ || 
-|{{:​techtalk:​evo:​oil:​2013_crankcase_breather_2_by_chris_b_owens.jpg?​direct&​300|}}|{{:​techtalk:​evo:​oil:​2013_crankcase_breather_1_by_chris_b_owens.jpg?​direct&​300|}}| 
  
 ===== Check the breather to gasket seal ===== ===== Check the breather to gasket seal =====
Line 155: Line 157:
 Also there is a bump to take up extra space next to the umbrella housing and it fits nicely in the hole of the gasket. \\ Also there is a bump to take up extra space next to the umbrella housing and it fits nicely in the hole of the gasket. \\
  
-{{:​techtalk:​evo:​engmech:​oem_gasket_1_by_dieselvette.jpg?​direct&​300|}} ((photo by dieselvette of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5769573#​post5769573)) {{:​techtalk:​evo:​engmech:​oem_gasket_1_by_dieselvette.jpg?​direct&​300|}} ((photo by dieselvette of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5769573#​post5769573)) ​+{{:​techtalk:​evo:​engmech:​oem_gasket_1_by_dieselvette.jpg?​direct&​300|}} ((photo by dieselvette of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5769573#​post5769573)) {{:​techtalk:​evo:​engmech:​oem_gasket_2_by_dieselvette.jpg?​direct&​300|}} ((photo by dieselvette of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5769573#​post5769573)) ​
  
 **Using Cometic Rocker Box Gaskets**: \\ **Using Cometic Rocker Box Gaskets**: \\
Line 165: Line 167:
  
 ====== Head Breather Bolts ====== ====== Head Breather Bolts ======
 +===== Sub Documents =====
 +  * [[techtalk:​evo:​engmech07a|Making 91-03 Breather Bolt Holes Smaller]] ​
 +
 See also [[techtalk:​ref:​engmech04|Evo Crankcase Pressure and Engine Breathing]] in the REF section of the Sportsterpedia. \\ See also [[techtalk:​ref:​engmech04|Evo Crankcase Pressure and Engine Breathing]] in the REF section of the Sportsterpedia. \\
  
Line 185: Line 190:
 They also allow the air to leave the vents at a faster rate. \\  They also allow the air to leave the vents at a faster rate. \\ 
  
-04+ breather bolts (small hole is nominally 1/16" or 1.5875 mm). ((tomcat of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=19)) ((Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=22)) \\ +04+ breather bolts (small hole is nominally 1/16" or 1.5875 mm). ((tomcat of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=19)) ((Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​t=2073932&​page=22)) ((http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) \\ 
 {{:​techtalk:​evo:​engmech:​04_up_breather_bolt_3_by_folkie.jpg?​direct&​300|}} ((photo by Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) {{:​techtalk:​evo:​engmech:​04_up_breather_bolt_2_by_folkie.jpg?​direct&​300|}} ((photo by Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) ​ {{:​techtalk:​evo:​engmech:​04_up_breather_bolt_1_by_folkie.jpg?​direct&​300|}} ((photo by Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) ​ {{:​techtalk:​evo:​engmech:​04_up_breather_bolt_3_by_folkie.jpg?​direct&​300|}} ((photo by Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) {{:​techtalk:​evo:​engmech:​04_up_breather_bolt_2_by_folkie.jpg?​direct&​300|}} ((photo by Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) ​ {{:​techtalk:​evo:​engmech:​04_up_breather_bolt_1_by_folkie.jpg?​direct&​300|}} ((photo by Folkie of the XLFORUM http://​xlforum.net/​forums/​showthread.php?​p=5756327#​post5756327)) ​