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On four stroke engines, it is important to realize that the cam rotates once for every two rotations of the crankshaft. Volumetric efficiency is based on cylinder fill. If a 2.0L engine is filled with 2.0L of an air/fuel mixture, we say its volumetric efficiency is 100%. If a 2.0L engine...

Some of you guys might know me from SF. For those who don't, a bit of background on me: I own an 88 turbo 5spd, that is getting major body work, a 1.5 JZ, and supporting mods to get me happily to the 600-800hp range. It's still in pieces, but as soon as it gets painted, I'll finally be...