How hard should the crank be to turn by hand?

 

It's not going to be easy because you have to overcome the compression of the cylinders, but you shouldn't have to use a breaker bar either. I turned mine over with good two-handed grip on a 1/2" ratchet.

 

well I don't have the motor together and no pistons are in, I'm talking crank alone, torque'd to specs.

 

Oh. Then I have no idea lol

 

the crank should spin pretty freely if there are no pistons. The resistance you get are from the compression from the pistons.

 

the crank should turn pretty easily with no pistons in. if it is turning hard, something is messed up. dont get me wrong. it takes maybe a pound or two of force to get it turning, but you should sense that it is in corretly. its prety tough to mess up bearings and the oil pump, but if you did it is very bad

 

Just to be sure, you plasti-guaged the main bearing gap correct?

 

Yes and they were in spec.

 

ok good, throw the pistons in.

 

I need to gap the rings first, what is the constant you multiply the bore size by?