Quote:

I would think the bubble would have nothing to do with squaring things up as the head is on an angle on the engine, even on the bench. A better way to measure would be to have the spring off and square it up against the valve stem.



I used to use a pic doing just that, but some guys couldn't figure out how to get the measurement with the spring on the head. Go figure.

Mike Beachel

I didn't write the rules of math nor create the laws of physics, I am just bound by them.