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Message: <blockquote data-quote="96blak54" data-source="post: 1384132" data-attributes="member: 14727">Adding to this postI failed to leave out some very important info about the straight shot flow. Since the valve tulip is not in the way and the rush skims over the valve, this maximizes the in cylinder swirl. Having this valve angle creates an awesome in cylinder swirl that never slows down, keeping the mixture more active throughout the chamber as the piston intake strokes. If the valve were an interference to the port, like in 95% of heads(old dinosaur engines), the rush gets walled at low lifts and needs to disburst 360* around the valve causing more interruptions, until the valve is at full lift were the shot is straight. Not to mention valve shrouding as its one down fall of the valve angle. Also including different flow patterns as the valve opens and shuts. This kills low lift flow, low lift cylinder swirl, homogenous condition and a wall to Helmholtz resonance flow when piston is past BDC.</blockquote>