Well this information will just have to settle until I am serious about trying to start it. Once further along will get to compression test, at this point would have to make adapter, and the part who's holes I would use to attach this with have not been made yet. Thinking ahead, I like the idea more of dishing out the piston on each end. Someone told me also that the compression should be different for each cylinder and dumb me, I didn't ask how much of a difference. But I bolted up the head with the piston in there for a photo.