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Posted by Chris Case [75.36.35.166] on Monday, January 21, 2013 at 19:16:27 :
In Reply to: Re: NOS 230 Cylinder Head Studs posted by Sherman in Idaho [24.32.202.166] on Monday, January 21, 2013 at 14:33:43 :
Not like a new bolt into a cruddy old block.
So far as coarse / fine torque, torque = friction, and friction is dependent on load, not surface area. So the tension on both threads would be the same regardleess of pitch.
But then, threads being nothing bu rolled ramps, the same load on a gentler ramp ought to be able to put a different strain on the bolt with the same load.... a quandary?
I do know the torque rules of thumb do not differentiate between thread pitchs....