Re: Super C Head Stud Question

Posted by Stan(VA). on September 08, 2006 at 20:50:50 from (4.248.249.30):

In Reply to: Super C Head Stud Question posted by Duane WI on September 08, 2006 at 10:00:14:

I have seen this problem on several motors also, even after re-torquing they still back off. IH switched over from studs to bolts at either the 100/200 or 130/230 tractors(looked this up before but didn't memorize it). The studs are 1/2" dia coarse thread at the block, and fine thread at the nut. You can buy the bolts at the dealer or just buy 1/2" grade 8, hex bolts (seems like either 5 or 6 inches long?) at a hardware store. After removing the studs, clean out the holes with a tap and test the bolt length in each hole to see when the bolt starts to bottom out (with head in place). My experience is that a few would need 1 or 2 flat washers to allow a proper torque w/o bottoming out (the factory ones are an odd length like 5-3/4" rather than 6" commonly available). When you find what's necessary I just use that number of washers on each for consistancy. Last thing is that the flat washers on one of the front bolts (and poss one of the back bolts?) interfere with the valve cover so you need to grind a flat on one side of those washers until they clear.
Hope that helps,
Stan(VA).

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