Wally,

Many guys have done the same with our nitro 2-strokes. Personally, I always liked measuring everything with measuring tools, machining the head buttons for zero squish, then brass head shims to establish squish. This was the easiest way for me. But, then again, we have flat pistons and flat head buttons, typically with "hemispherical" bowls, or combustion chambers. I messed around with conical piston tops and matching angle squish bands, which increased the squish band area without compromising bowl diameter. This made measuring more difficult, though.

I always try and determine the similarities and differences in "speed secrets" between the two engine concepts. You'd be surprised how much they actually have in common. Physics is physics, after all. What we are burning, how we get it in and out and how we get it to burn are different, but the fluid dynamics don't change.

Thanks. Brad.

.07 is the difference.

Now think ‘okay’ quench vs not.

Now said another……
.07 difference is schit for difference but quench vs no quench is.