Inliners International Forums General Discussion Engines What is the compression ratio?

Ted,
You really do have to measure all the stuff CNC said.
However, as a first guess, IF only the stuff you mentioned changed, I'd say your CR went up by about 0.2, from say 8.25 to 8.48 or so.
But, while its apart is the time to measure it.
I always measure the OLD CR as its coming apart (deck, piston cc, head cc, etc) so I know the old CR and then the new CR