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Old 12-02-2018, 06:27 AM   #1
Boxstard
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Join Date: Apr 2016
Location: SE Michigan
Posts: 496
Quote:
Originally Posted by JFP in PA View Post
I would suggest you read ARP’s white paper on the subject of reproducible torque levels and how they cannot be achieved without proper lubrication. The random scatter of torque readings without lubricant demonstrates why ANY fastener with a torque setting needs to be correctly lubricated in order to achieve the desired clamping loads.
It does not take much imagination to predict relatively poor gage R&R with dry torque vs lubed... My point was to clarify if the spec is meant for lubed or dry condition.

If you lube and torque to the dry spec., it will be over tightened, it's the fact. Still you may have no issues if the clamp force is still under the material yield, which could be the most cases where components are designed with safety margin, especially Porsche.
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