I learned the hard way. I put a new head gasket in, and when I tightened the head bolts, what I thought was right, was wrong. I torqued it down on my bench, and what I thought was 90 degrees and the correct torque was not correct. I did the first one, seen it went to 45 ft lbs when I turned it to 90 degrees. And I found out later, 90 degrees should have put it at 51 foot pounds. Part of the reason was because I use the old head bolts. Which I know you should not use, but I did because this is an unknown engine, in which I may be completely rebuilding. But I did not want to do so without at least hearing it run. I wanted to know if there were any other prevailing issues with the motor before investing more into it.
Anyway, I have a new head gasket installed already, and it runs the same, like garbage. But I don't have new Prime Starter yet. And I burnt up the gears on the starter motor. So this project is officially ON HOLD pending parts....