I couldn't wait. The plug works great, but the engine won't stay running. It will run as long as the electric drill is "helping" it, but it won't stay running on its own. I tried many different settings on the ignition timing and on the cam timing, and although it "wants" really bad to run on its own, it won't. There are only two possible things it can be. I don't really like the shape of the valve cam----It seems to be far to abrupt in the way it closes the exhaust valve----not so much in the way it opens it, but the fact that there is very little "dwell" on the cam, so that when the exhaust valve opens, it doesn't stay open for any amount of time, and immediately begins closing again. On the cam for the Webster, which is my only other i.c. experience, there is a fairly large "land" on the high part of the cam, so that when it opens the exhaust valve, it stays open during the entire exhaust stroke. Its easy enough to make a new cam, but first I have to address poor valve sealing which is still plaguing me. When I built the new valve cages, I re-used the old valves, knowing full well that I might have to make new valves in the future.---I even bought some 1/4" and some 3/8" drill rod to do it with. I will probably follow Chuck Fellows "step by step" of how he makes his valves out of drill rod, using a carbide lathe tool and finishes them off with a file and fine emery paper. I have never had good compression on this engine from day one, and I had excellent compression on the Webster, and it ran very easy first time I tried it. If the new valves don't get me a running engine, then I will tackle the cam.
