I thought I would pass this along so others would not go through this...... Even with 39 previous speedsters under my belt, I had an issue with a "no run fresh rebuild motor " that I could not resolve, I was stumped . It would crank and sputter but not run, did a detailed diagnostic check #1 TDC, valves opening correctly, 12v to coil. (10.75 v under cranking load) confirmed it was not a key switch issue, confirmed proper fuel flow, wires, plugs ...blah blah and still would not run. The only thing IMHO left was internal i.e.. cam timing. yanked the motor ( in just 24 minutes) drove 2.5 hours this AM to the builder shop, we bolted it to a motor stand and it fired right off and idles ! ! !
I had bought this speedster project with a chassis w/ trans already installed.. It had a bad chassis to trans ground strap connection that would allow the starter to crank but not properly ground the motor. Beer time !