whats best for performance? chamber and piston design

[PanHeadRed]

So how do you determine the best ju-ju for the performance enthusiasts?

Ju-Ju = Mixing of the charge.

[PanHeadRed]

"Performance .......... the most efficient burn"

Not always the same answer.....

most efficient burn?.........sphere.

What would be better?......the one that makes the best ju-ju in the cylinder while the piston is moving up and down.

Yeah.. With the spark at the center.. Need a long electrode on the plug..

Max

Yep, and since position of the flame was not one of his variables listed, sphere is the obvious choice.

[John/1]

what head is that ?

Cool head. Looks similar to an Ultra Pro.