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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Oil Use
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<blockquote data-quote="davidd" data-source="post: 46255" data-attributes="member: 1177"><p>I think it would be best if your erstwhile friend was Rex Bunn. His book on motorcycle breathers is too expensive for me to buy, but I have been lucky enough not to be plagued with heavy breathing. I agree that lowering the velocity is a good way to divorce your oil from its flighty partner. I am still concerned that regardless of the velocity you end up choosing for your crank case gases, that you have too many of them in the first place. Also, my telltale brain says that the breather should be able to relax and goof-off the higher the RPM. Certainly, the blow-by is much less the the higher the RPM due to much higher ring pressures, unless...</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 46255, member: 1177"] I think it would be best if your erstwhile friend was Rex Bunn. His book on motorcycle breathers is too expensive for me to buy, but I have been lucky enough not to be plagued with heavy breathing. I agree that lowering the velocity is a good way to divorce your oil from its flighty partner. I am still concerned that regardless of the velocity you end up choosing for your crank case gases, that you have too many of them in the first place. Also, my telltale brain says that the breather should be able to relax and goof-off the higher the RPM. Certainly, the blow-by is much less the the higher the RPM due to much higher ring pressures, unless... David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Oil Use
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