R3W7 Assembly

gregcon said
Made an initial piston-to-valve check, looks like there is lots of of room. The intake is around .235" and the exhaust is even more. I'm going to try advancing the cam 4 degrees then rechecking it. I don't plan to run it that way but I want to get some reference points while it's easy.

View attachment 1715636489

View attachment 1715636490

You’ve got more than that if you are using checking springs. You can run as tight as piston to head clearance for intake valve clearance. I’ve run as tight as .055 with aluminum rods. Of course, I run a Milodon gear drive so the timing doesn’t move.