Hi guys, I've just bought these Wossner pistons (see link) which lower the comp ratio of the zetec to 8:1. I know the zetec has a smaller combustion chamber than the cvh and i'm trying to work out what the compression ratio will be using my standard CVH head. I will be using a Felpro head gasket (please don't flame me for the Felpro) I know they havn't got the best rep lol.

http://www.performanceenginecomponen...duct.asp?id=68

Any help would be much appreciated,

Mitch.