Im trying to calculate my comp ratio so i can order my head gasket accordingly. does anyone know the size of the valve releifs of a stock head?

 

ok, so a buddy of mine suggested to fill the reliefs in the head with alcohol and then measure the volume of the fluid. not a bad idea so im going to try this today.

assuming that works, im fairly sure this formula should give me the numbers im looking for:

Compression Ratio =

Cylinder vol. + clearance vol. + piston Comp. vol. + gasket vol. + chamber vol. divided by Clearance vol. + piston vol. + gasket vol. + chamber vol.


or does anyone have another method of doing this?

 

you got it man thats the right way to do it