Broken Exhaust Manifold Stud

[stratofactor]

My dad has a 95 Corolla, 1.6 and I broke off one of the studs that holds the exhaust pipe to the exhaust manifold. There is about 3/8 of a inch of the stud sticking out of the exhaust manifold. Can I weld a nut to the stud and then un-screw the stud out of the manifold and replace it with a new one or will I have to drill it out.

Thanks

[JustinGB]

I have a similar problem and I was wondering if I should just knock the bolt out by breaking it and if so what techniques to break it out. Specifically the ones holding the cat.

[OEMonkey]

welding a nut on there will work. Or just use a stud remover socket. You have to use the correct size stud remover socket (I think 10mm in your case), and soak the stud w/ pb blaster to penetrate the rust and loosen it up if it's seized. If you have to drill it out, don't worry too much about damaging the threads. You can always just use a nut and bolt through it instead of the stock stud/nut.

[Flashmn]

theres a tool that grips the stud and turns it out. Try asking the local tool shop for one of them

[Tavel]

Originally Posted by OEMonkey

welding a nut on there will work. Or just use a stud remover socket. You have to use the correct size stud remover socket (I think 10mm in your case), and soak the stud w/ pb blaster to penetrate the rust and loosen it up if it's seized. If you have to drill it out, don't worry too much about damaging the threads. You can always just use a nut and bolt through it instead of the stock stud/nut.

hahaha, how come I don't think of things like that. I crossed the threads and spent 2 hours filing the bolt and massaging it back into the hole.

I should have drilled it out and gotten a new lag bolt at the hardware store!