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Old 02-07-2011, 11:14 AM   #9
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You should be using some type of lubricant on any torqued fastener, be it anti seize, oil, or thread locker. I’m sure there are small differences between each, but that there would also be a larger variance if the fasteners were assembled dry. I think ARP did a “white paper” on this subject several years ago, so you may want to check their site for more info.

In any case, by far the most accurate way to assemble with fasteners is to measure bolt stretch rather than torque. This is one of the reasons why Porsche uses “micro encapsulated” single use fasteners in several locations (like the flywheel), and uses torque specs followed by “tightening angles”, which are attempting to take into account the stretch factor………
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