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I wasnt going to reply but this thread is getting out of hand...It's been gone over before and was voted down by the origional members of this forum. I have the utmost respect for some of the above opinions but I feel compelled to post on behalf of anonymity. I absolutely understand how you...

A smaller volume (relatively) crankcase only really helps on lower RPM motors or On the bottom end of Screamers. Crankcase Pumping really becomes insignificant at revs over 18K +/-…in higher RPM regimes, wave timing and flow is more at play. High RPM motors work more on wave interactions...