Thread: ARP Head Studs
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Walt Fricke Walt Fricke is offline
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Join Date: May 2004
Location: Boulder, Colorado
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Actually, the factory barrel nuts are open at the top. If the stud is too long, as it enters the upper area of the nut it pushes the Allen tool end out. A guy can compensate for this if it is not way off by adding washers (if he doesn't worry about not having enough thread engagement in the case, that is.

Using a nut with a socket avoids this problem. I have taken to using flange nuts for stock threaded studs, and these seem to work well. The advantage a flange nut seems to have over a barrel nut (leaving aside compensation for some minor slip up in stud installation height) is that its smaller profile is a bit less of an obstruction to the cooling air flow. It also weighs less, though that isn't going to add up to a whole lot.

Are ARP studs back in stock?

Walt Fricke
Old 12-01-2005, 11:37 AM
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