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techtalk:ref:engmech04 [2019/12/08 21:34] hippysmack [Engine Breathing] |
techtalk:ref:engmech04 [2020/02/10 16:55] hippysmack [Symptoms of Breather problems] |
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Results: \\ | Results: \\ | ||
- | Sportsters move the least amount of air through the breathers. | + | Sportsters move the least amount of air through the breathers. \\ |
Twin Cams move the most amount of air through the breathers, with little difference between air cooled and Twin Cooled. \\ | Twin Cams move the most amount of air through the breathers, with little difference between air cooled and Twin Cooled. \\ | ||
Milwaukee-Eights move more air than Sportsters, but little more than half as much as the Twin Cams through the breathers. \\ | Milwaukee-Eights move more air than Sportsters, but little more than half as much as the Twin Cams through the breathers. \\ | ||
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+ | ====== Symptoms of Breather problems ====== | ||
+ | |||
+ | The most noticeable signs of breather valve problems are weeping gaskets or oil excessively leaking out the breather or puking oil out of it. \\ | ||
+ | When the umbrella(s) gets hard, it doesn't flex well to allow the engine to breath out on exhale. \\ | ||
+ | Then the trapped in air is compounded on the next stroke. The excess air contributes to more vacuum created and implodes the gaskets. \\ | ||
+ | Or it contributes to too high of oil density and slings excess oil out. \\ | ||
+ | Other factors are involved so results will vary. \\ | ||
===== Why Oil Pukes Out the Air Cleaner ===== | ===== Why Oil Pukes Out the Air Cleaner ===== | ||
Wet sumping is a term usually used when oil spits out the breather vent / air cleaner. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5757523#post5757523)) \\ | Wet sumping is a term usually used when oil spits out the breather vent / air cleaner. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5757523#post5757523)) \\ | ||
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So to keep oil out of the A/C, means keeping engine breathing And wet sumping in balance. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5757523#post5757523)) \\ | So to keep oil out of the A/C, means keeping engine breathing And wet sumping in balance. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?p=5757523#post5757523)) \\ | ||
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===== Breather Catch Can Test For Oil Leaks Out the Vent ===== | ===== Breather Catch Can Test For Oil Leaks Out the Vent ===== |