Quote:

Quote:

The performance pistons I have seen are D shaped dish and that's what you need unless you need a HUGE dish ...

I'm having Diamond make me a piston with a pop up quench dome AND a D shaped dish



John, is the pic. above considered a pop up quench dome and a D shaped dish??

Thanks.



it could be used as one but a step dome usually would not go to the edge of the piston like that , if it were used in an open chamber head you would to have to be absolutely postive the chamber did not overhang the bore , most will ... unless you are building something around a 4.280 or under bore size.

to me that looks like a piston designed to the zero decked .