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Old 10-29-2021, 11:16 PM
indigo indigo is offline
 
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I do not get your point.

I concur that you get greater vertical force from a fine thread stud than from a coarse thread stud for the same amount of torque applied to the nut.

The issue that one often encounters when torquing an A4 head is that of a stud pulling the threads out of the block. The threads in the block are typically foreshortened by corrosion on the water passage side and are thus more susceptible to damage via the torquing process using a bolt as opposed to a stud. The issue at hand is that of torquing up a true bolt in the block as opposed to torquing up a nut on a stud already seated in the block.

The more gentle you can be with the block threads, the more likely you are to get a well torqued head gasket that does not leak.

Stick with the studs!
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