Re: Hard Cranking H

Posted by riverbend on March 23, 2005 at 15:30:51 from (208.160.33.80):

In Reply to: Hard Cranking H posted by JSB on March 23, 2005 at 10:08:45:

When I put the motor for my H back together, I had a little trouble getting the crank to turn freely. If the main journal caps are the least bit cocked, they will bind up the crank. Same with the rods. Worst case? You will ruin a bearing and then the motor.

If you did not use plastigauge, get some at your local NAPA. You will need .002"-.003" and .003"-.004". It is a buck or two per stick. If you are careful one stick will do the entire engine. You have to check the clearence in the rod and main bearing journals.

Take the pan off and check the clearence. Do the mains first. You should have 0.002-0.003". Make sure the crank turns freely with the caps tight, but without the rod caps installed. Then do the rods one at a time to make sure they are not binding. They should have 0.002-0.003" also. Make sure that all the caps are in the right order and facing the correct direction.

If you run into trouble, post back. You can get a service manual on this website, at an IH dealer, or (my favorite), Binder Books.

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