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Originally Posted by Cloudsurfer
Not the same thing. Once a stretch bolt stretches, it is stretched. Using your idea, you are relying on the loctite to pickup where the tension between the threads left off, as the bolt you are re-using is already stretched.
For a few added bucks during a brake job, is it really a big deal to just do it the right way?
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But we aren't stretching the bolts beyond the tensile or up to the yeild strength? By the same arguement, I would need to replace my lug nuts and studs everytime I take a tire off.
Is the requred torque (I thing its 63 ft-lbs for the M12 x 1.5) exceeding the tensile strength of the bolt? If it is, I would step up to a Grade 8 bolt or higher. And should we be worried about bracket failure? If the bolt is stretching, then the bracket is also deforming and the threads in the bracket under tension. And the caliper itself is under a compression load. All potential failure conditions.