hey all, i have a z6 that i built with p29 pistons, eristic head gasket, and .010 off the head and .010 off the block. i found a c/r calculator on the internet that said my c/r would be 13.6:1 with using a stock z6 block, head, headgasket, and p29 pistons. is this fairly accurate, because if it is then im in trouble and i need to throw a thick head gasket it to bring the c/r down so i can run on at least premium pump gas. any thoughts and suggestions are apreciated. thanks

 

I saw 12.79 with the standard calculator, using all Z6 parts and the P29 pistons as you said.

http://www.zealautowerks.com/dseries.html

C/R can be made more manageable with a proper camshaft, and a damn good tuner.

 

ah that clc is different then the one i used. that's a way better number. im not so worried now. well i have an eristic gasket. i think it s a two layer and the c/r with the y8 2 layer and my set up is 13.2. that is still pretty high.

 

I would advise using a standard 3-layer metal gasket, and what camshaft will you be using? The later the intake valve closes on the compression stroke, the lower the dynamic compression will be.

 

im using a stock cam. the engine is already built wit the eristic head gasket. its a steel one too. i really dont want to pull it all back apart tho. i plan on gettin it tuned right after the first start up

 

With this type of compression, you will most definitely want to look at some aftermarket camshaft; contact Bisimoto, they should have a cam to fit an engine with this C/R.

 

and a really good tuner or...boom!