how do you tighten these down without damaging them?

double nut them to tighten them in. not with your new nuts. use a couple the correct size out of the coffee can. torque? i would not exceede the stock he recomendations. oomv.

k

If you feel or hear a "POP" when tightening them down -

YOU HAVE GONE TOO FAR!!


Use copper nuts in the annealed condition (brand new, never been heated up before) that way they will strip out BEFORE snapping the stud (softer material). That is, if the stud is in decent condition to start with - buy some extra so when you do strip one ( everyone has done it) you have more on hand - Not to mention you just calibrated your arm-torque-wrench to specs -

I believe the "copper" exhuast nuts are merely copper-coated. If they were pure copper, I don't think they'd hold too well...

--DD