Originally Posted by RichardV6
Originally Posted by Robbie Mathisen
Originally Posted by CBY
Nylon screw insulators with stainless screws could be the solution.
https://docs.rs-online.com/69ca/0900766b816b0742.pdf page 53

But why not nylon screws?

Indeed, might be the best solutoin. Only concern is wether they melt with the heat from the silencer(s) under the running board. I think not, however. Then you have PEEK screws, that have a melting point of 180 degrees C. An M3 countersu nylonnk should do. Inspected mine yesterday, SS screws with anti-coorosive paste. No visible corrosion after fitting them half a year ago. But if corrosion eventually appears, PEEK or nylon screws with nylon washers and then Nylocks underneath. I hav not located M3 nylon nuts so far, guess SS Nylock and nylon washer is ok. That will be the next (and hopefully final) step.

I would also be tempted if I had to do the job again, to fit nylon screws and nuts plus washers if needed. The natural stiffness of nylon threads means that locking nuts likely wouldn't be needed. Available down to 2mm below. I agree that heat wouldn't be an issue here either.

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[Linked Image]

Yes, but countersunk screws, to avoid bulges in the rubbers strips..They are available if one searches a bit. As I said, I fitted SS about half a year ago. I took off the rubbers the other day, no visible corrosion present so far. However there was moisture under thee rear end of the strips, in spite of the car being dry for about three weeks. I guess the water almost never dries out underneath the strips. I will loosen some screws and inspect more closely today, report will follow...

Robbie the Norseman
2004 V6 Roadster
Sherwood green