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techtalk:ih:engmech07 [2019/12/04 00:52] hippysmack [Sub Documents] |
techtalk:ih:engmech07 [2019/12/04 04:18] hippysmack [Sub Documents] |
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| This allows crankcase exhaust air pressure to expel the scavenge oil from the crankcase breather oil trap into the gearcase. \\ | This allows crankcase exhaust air pressure to expel the scavenge oil from the crankcase breather oil trap into the gearcase. \\ | ||
| The breather valve closes on piston upstroke, creating vacuum in the crankcase. \\ | The breather valve closes on piston upstroke, creating vacuum in the crankcase. \\ | ||
| + | Crankcase exhaust air from the gearcase is sent out the breather tube. \\ | ||
| + | |||
| + | A street oil pump has 2 slots and is driven at 1/2 engine speed. ((thefrenchowl of the XLFORUM http://xlforum.net/forums/showthread.php?t=448751)) \\ | ||
| + | A racing oil pump has 4 slots and is driven at 1/4 engine speed. \\ | ||
| + | All 4 stroke engines takes two revolutions before you come back to the timing marks being all aligned. | ||
| How the volume compares when the breather opens as to when it closes: ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1204854&page=3)) \\ | How the volume compares when the breather opens as to when it closes: ((Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1204854&page=3)) \\ | ||
