I did a compression test on my car last night while changing plugs and fitting new coil packs and got 9.5bar from the front two cylinders and 9bar from the rears.

Is this ok?

Engine is cosworth forged pistons and rods ej207 nitrided crank
Cosworth head gaskets
Jdm sti avcs heads (standard)
built compression was 8.4:1
Engine has covered 2500miles from rebuild

 

130-137 psi...pretty even, I think a standard block is around 150psi but dont quote me on it