[H-viken]

Originally Posted by dug@project914

I believe it's to allow the incoming mixture to flow more easily into the entire chamber and promote even propagation of the flame front. With the very tall peak in between the valves, the piston bifurcates the chamber. The sharp edges also create hot spots that can promote detonation. Please someone correct me if I'm wrong. Totally arm-chairing this one

thanks,
dug

Ok, so the gain mentioned is mainly seen in single-plug engines?