How difficult should it be to turn over by hand??

As you install more pistons, there should be some more drag when you turn the crank.

When they are all in, it should still be able to turn.

Were you diligent to keep all of the rods and caps together and in the proper orientation. One wrong cap can have enough mis-alignment to lock up the crank.

Try loosening one cap at a time and then turning the crank until it gets free to turn. Try to isolate which caps are giving you the most resistance to turn. Then closely look at the rod and cap to see if there are any chamfers on the sides of the crank bore and if they match between the cap and rod. That could indicate a cap that was mixed from its original rod.


It sounds like there is too much resistance for your crank to turn with all of the pistons in....