Originally Posted by NATH-RSZT

Right this is for anyone that can answer . Now the 2.0l silvertop zetec engine has a 1.5mm thick head gasket and the pistons petrude 0.5mm from the block, The blacktop zetec engine has a metal gasket about 0.4mm or even thinner and the pistons are 0.5mm below deck and have a big dish in them, What i want to know is roughly what CR would a blcktop engine be with a thicker silver top gasket. What i'm thinking is if using a blacktop engine and a thick head gasket a decomp plate is not needed for turbo applications. Also do the BT and the ST cylinder heads have the same cc.

When it comes to cr's It goes over my head a little and abit of knowledge on this subject would help me out.