How many foot pounds needed to turn mag 5.9?
Connecting rod caps installed on the wrong rods will do that also.
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“The chamfer for the crank filet clearance is cut on one side of the rod only. So the rods need to be oriented so the two rods touch each other on the side with no chamfer. The bearings are offset in the rod to clear the crank's filet so getting that backwards usually means it will be hard to turn over and will have no side clearance on the rods”