[hbrand]

After a rebuild ( including new cylinders, pistons, rings, new crank bearings, crank turned freely),
engine is very hard to turn by hand, but runs good.
Same with spark plugs removed, and transmission in no gear

After 350 miles driving engine is still very hard to turn by hand.

Shop said the crank is the problem.

So I drove 350 miles with a problem from the crankshaft !

Is this possible or would not the crank bearings overheat???

Thank you
Harald Brandner