What is the curent thinking on exhaust stud nuts, Copper or regular? |
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What is the curent thinking on exhaust stud nuts, Copper or regular? |
thomasotten |
Oct 10 2007, 10:52 AM
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#1
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Senior Member Group: Members Posts: 1,547 Joined: 16-November 03 From: San Antonio, Texas Member No.: 1,349 |
Are the copper coated nuts the way to go, or is using regular bolts, double bolting the way. I read something yesterday that said the copper nuts should only be used once...why?? Should I coat the studs with anything?
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Cap'n Krusty |
Oct 10 2007, 08:25 PM
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#2
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
There's an interesting article on stainless steel hardware (and it's appropriate uses) in last month's issue of Motor Magazine. Non-geek that I am, I dunno how to get you the pages from the PDF, so I'll give you a link. Once you have the PDF, go to page 26. Perhaps we can end this clueless insistence on the use of SS hardware. Here's the link: http://ct.emeraldmail-usa.com/rd/cts?d=7-1...25-0-0-0-1-2-23
BTW, the factory used one kind of exhaust nut on the 1.7/1.8s, and another on 2.0 cars. BOTH were steel with a SS insert. A Helicoil, or whatever brand they use in Germany. I save and reuse them as often as I can, as they work just fine unless/until they get rounded off. They are the best thing I've found to maintain the torque in the hot/cold environment of the exhaust system. I also paint the studs with anti-seize. Maybe someone can get the contents of the article into an e-mail so we'll have it here for all to see. The Cap'n |
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