Well I'm in the process of removing my 3.1 classic stroker engine for sale, and decided to do a bit of measuring and testing before it leaves so the new owner has an idea of what to expect and what service it might need. It has been in service for quite sometime. I wanted to do a leak down test, and the best way to do that is to remove the rocker arms and keep all the valves shut. That way as you apply compressed air to each cylinder, if and when the piston gets pushed to the bottom, it doe