Posted by Steve@Advance on August 10, 2014 at 20:01:18 from (107.203.134.67):
In Reply to: Head gasket posted by John Monforte on August 10, 2014 at 19:26:53:
Don't want to do that...
Several advantages to studs over bolts.
The studs get full engagement in the block threads. Last thing you want to do is pull the threads out of the block!
Most studs are fine thread on the nut end. This gives more pulling power per ft. pound than coarse thread.
Stainless covers a wide range of alloys, more for corrosion resistance than high strength. Stainless is also prone to seize and pull threads.
If the studs come out, all the better! If they're showing signs of rust and thread wear, replace them. Might want to go ahead and pull all of them and clean them up, decide weather to reuse them.
If you re use them, clean them up with a wire brush, NEVER chase the threads with a tap! You do want to chase the threads in the block with a tap.
If you replace them, be sure to use the recommended grade studs and nuts to get the proper stretch and hold. If the bolt holes in the block are wet holes (drilled into the water jacket), seal the threads with Permatex or silicone. Use oil on the nut threads. One thing you can do, if not already equipped, is put hardened flat washers under the nuts. Keeps them from digging into the iron on the head.
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