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techtalk:evo:engmech07 [2019/08/12 03:30] hippysmack |
techtalk:evo:engmech07 [2019/08/18 02:35] hippysmack [Head Breather Bolts] |
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| |{{:techtalk:evo:oil:head_breather_holes_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:head_breather_holes_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:head_breather_holes_3_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:evo:oil:head_breather_holes_1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:head_breather_holes_2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:oil:head_breather_holes_3_by_hippysmack.jpg?direct&300|}}| | ||
| | 91-03 crankcase ventilation is done through the hole with the wire tie. ((photos by Hippysmack)) ||| | | 91-03 crankcase ventilation is done through the hole with the wire tie. ((photos by Hippysmack)) ||| | ||
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| ====== 2004-Present Engine Breathing ====== | ====== 2004-Present Engine Breathing ====== | ||
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| |{{: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|}}| | ||
| - | ==== 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))\\ | 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. \\ | The rocker box cover gasket is part of the seal for the breather port. \\ | ||
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| Without the hole through the bolts, the engine can't breathe. \\ | Without the hole through the bolts, the engine can't breathe. \\ | ||
| - | The size of the orifice in the hollow breather bolts makes the crankcase pressure rise higher (or lower) in the process of expelling the gas. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=4050323&highlight=breather+bolts#post4050323)) \\ | + | The size of the orifice in the hollow head breather bolts makes the crankcase pressure rise higher (or lower) in the process of expelling the gas. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?p=4050323&highlight=breather+bolts#post4050323)) \\ |
| == 91-03 == | == 91-03 == | ||
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| 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)) | ||
