how do i figure out my compression, i knwo how much i have io just want to knwo if there are any formulas tofigure them out

 

Compression ratio is (swept volume + clearance volume)/(clearance volume). Swept volume is the volume of one cylinder, clearance volume is head cc + deck volume +gasket volume + valve relief volume. It is easier to use ccs(cubic centimeters), so make sure to convert swept volume.

 

Keith Black Pistons has just put up a real good compression ratio calculator for ya, on their internet site.
Check it out......

http://www.kb-silvolite.com/