I'm replacing a couple broken exhaust manifold studs in my '84 240T,
and I'm wondering if I need to treat the studs with anything before
putting them in. The crushed nuts have a nice locking mechanism, but
there is nothing that keeps the stud from backing out. Should I put
lock-tite on the threads, or is this just asking for trouble later? It
is an '84 so I don't know if this maintenance will ever be done on it
again.....

Thanks, -zoltan

I have not added anything, and had no trouble.

Besides, assuming Loc-Tite would survive the high temps, the LAST thing
you want at some future date is to have the stud break off again, and
be unable to remove it easily because you used Loc-Tite.

zoltan wrote:

I'd put some anti-sieze compound on them. I'd much rather have them back
themselves out than break off, the latter of which being the only issue
I've experienced.

James Sweet wrote:
Thanks.....I had one stud back out on me, but it's probably just an
anomaly.....

-z

zoltan wrote:

turbo, as I too have had issues with nuts coming loose from vibration.

Never had a stud back out though.

Just get in the habit of visually inspecting things regularly, check
for tightness with a wrench every time you change the oil e.g.

zencraps (AT) comcast (DOT) net wrote:
I would except the heat shield makes this process a little more
involved....

zoltan wrote:

I chucked the heat shield a few years ago, doesn't seem to make any
difference, I use Magnecore plug wires with a lifetime warranty, they
seem to be holding up. Not sure if the shield had any other function but
one of the bolts holding mine on was already broken off.

Same here, I haven't had a heat shield for a few years, no problem.