Broken Exhaust Manifold Bolt, What Can I Do? Options

[TRD-ST204]

Today I was looking around my engine and found that there was a exhaust manifold nut missing. So I looked closely and realized that half of the bolt was snapped off. What can I do to fix it? Is there replacement studs that I can use? If so how would I take off the broken half? Thanks

This post has been edited by TRD-ST204: Mar 9, 2006 - 11:14 PM

[Green_MachToy]

When mine broke, I had to drill the broken stud because it was about three threads inside the head. I drilled it and tried to use and easy out. No luck! Eventually had to drill out the old bolt and tap a larger hole. I was told to find a stud that had two different sizes to it, but ended up using a heli coil. (I am not sure if I spelt that right). I placed it in the one size larger hole and then placed a stud that was the same size as the rest of the stock ones. That was four months ago and seems to be holding fine.

[Dr_Tweak]

When mine broke, I had to drill the broken stud because it was about three threads inside the head. I drilled it and tried to use and easy out. No luck! Eventually had to drill out the old bolt and tap a larger hole. I was told to find a stud that had two different sizes to it, but ended up using a heli coil. (I am not sure if I spelt that right). I placed it in the one size larger hole and then placed a stud that was the same size as the rest of the stock ones. That was four months ago and seems to be holding fine.

This is technically the best way to make this kind of repair, a helicoil is actually stronger than the original thread.

-Doc