[Vwdiesel] Broken Exhaust Studs
Mary Beth and Chris Geiser
geiser at execpc.com
Mon Aug 9 08:21:30 EDT 2004
The Vanagon diesel uses studs/nuts from the exhaust manifold to the
first exhaust pipe instead of those spring clip things they use on the
cars. 3 of the four of mine are broke. Took the manifold off yesterday
and the three broken ones still have enough nubby's on them to get a
vice grip on, so they're busy soaking in Liquid Wrench for the next few
days... the fourth came right out with the stud attached - woo hoo!!
A few questions as I'm reassembling: The First exhaust pipe is bolted
to the manifold, then it makes a few turns and is attached to the
muffler which runs longitudinally along the back of the van on it's
hangers. The whole system is bolted together and must vibrate / flex as
a unit - is there some type of flex pipe that I should have welded in
there to save stress on these exhaust studs? I assume mine broke
because they were 23 yrs old and corroded to crap, but may have lasted
longer without the whole deal vibrating as one unit?
Secondly - This is really the first exhaust work I've done - is there a
special kind of material that the nut on the exhaust stud should be made
of to prevent some of this corrosion? Should I use stainless steel nuts
or is there something better?
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