In the aviation world we used brass nuts on the exhaust pipes. These
didn't require anti-seize compound. It did happen once in a blue moon
that a brass nut would seize. But not very often at all. Usually what
would happen would be the threads in the nut would tear out, making it
possible to clean up the stud threads once the nut was out of the way.
Sure beat the heck out of having to replace a stud.  On the rare
occasions I ever saw a truly seized brass nut,  like most seized nuts,
there was a risk of breaking the stud or backing it out of its hole. I
vote for brass nuts on the exhaust studs of the WBX - if you can find them.

One caveat however. Brass nuts absolutely MUST be wrench torqued to
spec. The use of the Calibrated Wrist
Torque not permitted. Then the  click heard is not the sound of torque
meeting spec, but instead the indication of the degree of the mechanic's
arthritis.

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 4/23/2011 10:06 PM, Scott Daniel - Turbovans wrote:
> nut type doesn't matter too much.