[C. Clark]

Hello,

Since the engine did start and there where no unusual happenings during the initial startup, I would say it's electrical. I assume everything went back together easy when you put the engine back in? If it were a overheat it should spin once it cooled down. The engine being hard to turn over manually I think should be expected with a upper rebuild, tighter specs, more compression etc. Porsche electrical is weird, everything must be very clean with the connections. Ground wires can do strange things if there dirty or loose. Like the other guy said is the battery good / starter? If it had not started and ran ok initially I would be suspect for the re-build, another Porsche mystery. Good luck I hope it's something basic.

Chas.