cstraub69@comcast

Dish piston with up graded pin. Good options are ceramic coating and pin oiliers. JE shelf stock's top ring is down enough for a blower application, but a custom set and they can lower the ring even more and keep it out of the heat.

A properly designed "dish" promotes more effiecent combustion.

Chris

rmbuilder

The JE supercharger piston is not a true dish design but actually an inverted dome piston. It gives the benefit of lowering compression, maintaining an unobstructed chamber while still maintaining effective quench
Bob