You need to CC the head and then add that volume to the cylinder volume at TDC (including headgasket). You then divide the the total cylinder volume (including HG and head CC) by the cylinder volume at TDC. This is the only way to truely know your compression. You also need to add the CC of the piston dish (the wiseco's are 22 cc's) to the volumes. You should end up in the 8.8-9.0 range.cannodal19 said:is there a actuall way to tested the car for your compression? cause I know if u put 9:0:1 it should just htat, but not if u have a shaved head? so how do u find it out?
My pistons were slightly out of the hole, so I took that into consideration as well.