Differences

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--- techtalk:evo:engmech07 [2019/08/12 03:33]
hippysmack [Check the breather to gasket seal]
+++ techtalk:evo:engmech07 [2019/11/14 04:01]
hippysmack [2004-Present Engine Breathing]
@@ Line 88: / Line 88: @@
         * Air pressure escapes the head through the hollow bolts (one in each head) that hold the air cleaner mount.
-{{:techtalk:evo:engmech:91-03_sportster_head_breathing_2_drawing_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack)) {{:techtalk:evo:oil:crankcase_pressure_separation_chambe_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
+{{:techtalk:evo:engmech:a91-03_sportster_head_breathing_2_drawing_by_hippysmack.jpg?direct&300|}} ((drawing by Hippysmack)) {{:techtalk:evo:oil:crankcase_pressure_separation_chambe_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
   * The Parts Catalog and FSM are a bit confusing regarding how many umbrellas are used and where. \\ The information is there but it's just not clear. \\ The parts catalog only shows an exploded diagram of one rocker box assembly on the Rocker Arms, Covers and Pushrods page. \\ Yet, the description shows that 2 umbrellas are required. \\ It's the same for all of the parts on that page as well as each newer parts catalog (1 pushrod, tube ,lifter and related parts). \\ This is the norm mostly throughout the subsequent catalogs with multiple (same) parts. \\ It's assumed this was done to save money on printing the catalogs (replicated information deleted). \\ The FSM displays the same exploded diagram as the parts catalog in the front of the Cylinder Head section. \\ It's only at the end of the Installation article does it say to install new gaskets on the middle rocker box (with the breather valve on the intake side). \\ There is no dedicated section on the rocker box or umbrella valves (which seem to be regarded as mere gaskets).
@@ Line 120: / Line 120: @@
         * Air pressure escapes the head through the hollow bolts (one in each head) that hold the air cleaner mount.
-{{:techtalk:evo:engmech:04_up_head_breathing_drawing_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
+{{:techtalk:evo:engmech:a04_up_head_breathing_drawing_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack))
 Just as with the 91-03 umbrella valves, only 1 breather valve per side is used. \\
@@ 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|}}|
-|  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))  ||
+|  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_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|}}|
-==== Check the breather to gasket seal ====
+===== Check the breather to gasket seal =====
 There is an anomaly when it comes to the seal around the stock breather port under the rocker box. ((dieselvette of the XLFORUM http://xlforum.net/forums/showthread.php?p=5769573#post5769573))\\
 The rocker box cover gasket is part of the seal for the breather port. \\
@@ 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. \\
-{{: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**: \\
@@ Line 165: / Line 167: @@
 ====== 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. \\
@@ Line 185: / Line 190: @@
 They also allow the air to leave the vents at a faster rate. \\
-+ 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)) \\
++ 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))

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