Exhaust manifold studs Q

[peter@thescirocco.com (Peter)]

-----Original Message-----
From: scirocco-l-admin@scirocco.org
[mailto:scirocco-l-admin@scirocco.org] On Behalf Of Marc scirocco =
Qu=E9bec
Sent: Sunday, June 16, 2002 8:46 PM
To: scirocco-l@scirocco.org
Subject: Exhaust manifold studs Q


Here it is, I am about to install this 4-2 exhaust
manifold.

Now, 3 of the old studs are out, no problem. The 3
remaining studs broke, with nothing to grab them.

I drilled 2, one of them is gone now, but the threads
are shot... And I am sur that it will be the same
thing for the remaining 2 studs.

At this stage, I do not care if the new studs ever
come out again, so I am thinking about drilling a
hole, and welding/gluing the remaining 3 new studs, JB
weld, or something similar...

Anybody has done something similar in the past? Any
suggestion?

Cheers.

Marc
'83 Scirocco
'88 Scirocco Slegato

Using 8mm x 1.25 Heli-coils is how I would fix it.
The kit comes with a tap for the steel coil threads, you drill the
21/64" hole, run the tap through, the key to tapping cast iron is back
and forth, back and forth, in very small steps, you thread in the thread
coil and you are done.

The tough part is drilling the hole in the center of the broken stud.
A small 1/8" pilot hole in the center of the broken stud is a good start
and a drill press doesn't hurt.

Peter