Quote:
Originally Posted by Synchro909
55 ftlbs on a fine thread will give much more pressure than the same torque on a coarse one. I'd have yo consult charts to see what the coarse thread would have to be torqued to to ge the same pressure but it will be too much. Use a proper stud.
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I would not test. I would put the new studs in and torque to the indicated amount. If one fails you fix that one.
Remarkable thing about bolting. More bolts (almost all) fail in torquing than fail in service.
VW brought this to a high art with their "stretch bolting" which are actually designed to be set above the yield point of the fastener. Same "failure test" applies.
Joe K