Compression ration question
If you build a supposedly 11:1 compression motor...what would be the loss if you swapped pistons to a 10cc valve relief type?
The header is supposed to be ratio..the "n" just jumped on there by itself..lol !!!!
Pitt
John at TSP answered me with a 10.85 with stock gasket. I want to shave my heads to get up to 11:1 or a little over

