I think the studs are the same as the intake/exhaust studs on the motor.
Yes, use brass nuts.
Not necessary but use a new gasket and make sure all is clean/spotless.
Good luck and have fun!
Jon
On 4/28/2013 4:23 PM, David Ambrose wrote:
> First, a little background:
> My son's '70 Midget developed an exhaust leak. After a bit of poking
> around, we found it at the junction between the exhaust manifold and the
> down pipe. A little further poking around revealed the lack of any
> bracing for that pipe, hence the leak. Both the engine bracket and strap
> were missing.
>
> We fabricated a replacement brace, and after congratulating ourselves
> for mechanical prowess, good character and general cleverness, we went
> to replace the donut seal. First two flange bolts came out fine, the
> third one, not so much. Broke off flush.
>
> My neighborhood machine shop was more than happy to trade an official
> portrait of Andrew Jackson for an empty hole. They also put helicoils in
> all the holes because they didn't like the way they looked. These guys
> are now some of my favorite people.
>
> We're ready for reassembly, but have a few questions:
>
> 1. The parts catalog shows studs in the manifold. How long should they be?
> 2. Should we use high strength brass nuts to bolt down the flange?
> 3. should we use copper gasket dressing on the intake/exhaust manifold
> gasket?
>
> Cheers,
> Dave Ambrose
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