first burn out.flv

Think about it, no Toyota factory RACE Engine had 5 valves per cylinder!! Yamaha- who works with Toyota on cylinder head design (and manufacturing), have been a very avid pioneer and supporter of the 5-valve design. The short-lived Yamaha Formula 1 engines had 5 valves per cylinder. In terms of maximum valve to surface area- the 5 valve design cannot be beat- theoretically and geometrically.
Author: derfusmagus; Tags: 4AG-E Blacktop


















