964Andrew

Well... I broke one of the exhaust studs below the surface. So far I tried welding a nut to it but that did not work. I am looking to buy or borrow Stomski Racing exhaust stud repair kit. I will buy new kit if I must, but maybe someone has it and is willing to lend it or sell it?

Thanks!
Andrew

Mr.Alex

Ouch, was my main fear when taking off stock HE. Someone on here is bound to have a rig, perhaps even just to rent it to you.

LPMM

PM user Duck to see who bought his jig, perhaps you can borrow it from the new owner?
https://rennlist.com/forums/parts-ma...ial-tools.html

DobermanDad

Need one of these:



Not sure who sells them.

Saw in this blog about fixing oil leaks.

964Andrew

That's the Stomski Racing kit I ended up drilling it out by hand, was easier than I thought.

Thanks!
Andrew

964Andrew

Need to run a final 17/64 bit and fish out remaining thread, chase the threads and install new stud.




Just an outside wall of the stud remains. I was able to stay on centre all the way down.




Thanks!
Andrew

crg53

Nice job, that engine looks way... too clean.

DobermanDad

Wow! Nice work. That would be hard to keep perfect by hand.

abarthguy

Nice work !
I've had good results by using a smaller tap before getting the hole too close to the original threads.
Heat from drilling seems to loosen the remaining part. Run the tap in 'til it starts to cut new threads and then back it out.
Using a left hand thread tap also works well !

964Andrew

Mission complete! Now, do I use just the regular thread locker or something special?




Thanks!
Andrew

onceover

The highest temp rated loctite that I'm aware of is 272 and its only good to 200C. Not sure how hot the studs will get, but I imagine over 200C is not unlikely.

http://www.loctite.co.uk/loctite-408...=8802623717377

964Andrew

There are some mil spec super high temp and strength thread lockers (4 digit ones) but I doubt they are really necessary. Red thread locker 271 and 272 cures without air. But, since the threads are a bit looser after drilling out the stud I'm thinking an air cured thread locker would be more suited. Anyone have an experience in that area?

Or maybe even a liquid metal type of epoxy?

Thanks!
Andrew

Rocket Rob

When I had to drill out a broken stud on my 914, I put the stud back in with red loctite. It never moved on me afterward.