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if you do break the stud...
Posted by thresholdmusic (more from thresholdmusic) on Fri, 16 Mar 2012 05:50:26
In Reply to: Re: how to pull out a busted exhaust stud out of the head, ZAAB , Fri, 16 Mar 2012 04:27:58
no big deal.

skip the easy out and use a product called Heli Coil.

I have used this on SAAB heads before, and VW's...it works GREAT!
I have also saved many other things with Heli Coil.
It kicks but!!!!

You have to drill out the broken stud, but don't get scared, ..never had one NOT work out. Use lots of oil.
Besides, the exh. manifold bolts get like, 13-18 ft. lbs. of torque, so Heli Coil is perfect for this type of repair..
Take a good look at it, and get in there.

btw, This can be done w/ the head still installed.

If you use an easy out, and it breaks, that makes your only real solution (using Heli Coil) is waaaaaaay harder cuz' the broken part of the easy out is really hard to drill through.
Trust me, i know.

Consider switching the studs to bolts on the re-install.
Just be careful that they are not too long as they will bottom out and strip the threads in the head.
Use washers if needed, and do not over-tighten!

cheers!

posted by 76.201.14...
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