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Re: A12 Cross Flow Head | Subject: Re: A12 Cross Flow Head by ddgonzal on 2018/6/15 3:14:13
37mm is the standard A15 intake valve size. While the E16 is the same size, the crossflow design of the E flows more air. Most E15 have 41mm valves as do some E16. A semi-hemi (canted-valve crossflow) should do even better
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