I thought it should be around 180. The rings are Childs and Albert Moly file fit. I did them. I did look around my garage to see if I forgot!!! So on leakdowns that I have done it takes the piston to be at the top to have both valves closed. I may have to ensure valves are closed and piston maybe not all the way up? Birdtracker
Piston all the way up and locked so it won't move with the air pressure, on the firing stroke, no valve should be open at that point. Listen to where the air goes, intake, exhaust or crankcase. You don't want to hear it come out the in-ex, bad, bad.
