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Scion tC 1G Forced Induction Turbo and supercharger applications...

removing exhaust manifold studs.

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Old May 25, 2011 | 07:37 PM
  #1  
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Default removing exhaust manifold studs.

So, the stock studs have been on the car for 100k miles, and boosted for 20k. They have decided that now is the time they are going to break. So now i have 3 broken studs, 1 of which broke in a convienent enough manner that i could rethread another nut on. The other two are not. How would you (the people reading this thread) recommend me getting them off? I have tried vice grips, but all that did was mess up the threads rendering that one completely useless.

i have two that still have the hex thing available and i have a socket for those so as long as those don't strip i can take them out the easy way.

if all else fails, is it possible to just weld the manifold to the block? lol

Last edited by skinnayyy; Jun 24, 2011 at 02:07 PM.
Old May 25, 2011 | 08:12 PM
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hex socket, double nut, vise grips (better pair)

ugh welding a nut to the stud last resort

ARP FTW
Old May 25, 2011 | 08:36 PM
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for the vice grips, would it be better if i kind cut off the threads so that i would be latched onto a flat surface instead of the threads?
Old May 25, 2011 | 08:54 PM
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you could file or grind 2 flat edges on to the studs and use a wrench to remove them.
Old May 25, 2011 | 09:55 PM
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I had the same problem. I have one left to remove and replace that I cannot break free no matter what I do. Exhaust leak from hell. If you find a good way, please post.
Old May 25, 2011 | 10:20 PM
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double nut works great, my pref method if the top of the stud breaks off or does not have the hex end.

after that, vice grips. Never had to file down threads, they just work themselves in there. spray some GOOD penetrating lube, let them sit, go at it. If you have a heat source (torch) would greatly help
Old May 25, 2011 | 11:00 PM
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i'm going to have to try that out then. it is sooooooo annoying with the gasket rattling around
Old May 26, 2011 | 03:11 AM
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I had one that broke after I had the vise grips on it...had a buddy drill and retap it. I was too scared to do it myself. I would be careful throwing heat at it.
Old May 26, 2011 | 03:20 AM
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what about if the stud is flushed with the head? cause mines broke off with none of it sticking out
Old May 26, 2011 | 06:38 AM
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^^ drill & tap
Old May 26, 2011 | 09:16 AM
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Make sure to get a real good drill bit, studs are very hard.
Old May 26, 2011 | 04:10 PM
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i had an idea of drilling a smaller hole inside the stud and tapping it with a left hand turn bit, then screwing in a left hand bolt and just keep going at it until eventually it comes out
Old Jun 1, 2011 | 01:20 AM
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Thanks guys I will try that... hope it works
Old Jun 3, 2011 | 12:04 AM
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i just did this a while ago. double nut works great. and when you put the new ones on, take a grinder or dremel with a cut off wheel and notch the top of the new stud just enough to get a screw driver in to insert the stud in the block. it will make everything 600 times easier to install the new ones without messing up the threads.
Old Jun 3, 2011 | 11:42 AM
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i got the dezod studs, so hopefully there won't be a next time lol the only reason i'm doing this is beacuse they keep breaking on me. I don't even think i have enough of a stud to do a double nut
Old Jun 3, 2011 | 02:09 PM
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did you get them out? double nut is best for installing new studs also
Old Jun 3, 2011 | 03:48 PM
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Penetrating lube is the shizz. Oh yeah, and it works great for your car too
Old Jun 3, 2011 | 04:15 PM
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no i havent had the time. i might this weekend though
Old Jun 4, 2011 | 09:04 PM
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a blow torch + deep creep(penetration spray) + double nut + 2 nuts () = all 5 studs are out!!!

apparently i did some good things this week because everything is going fairly smoothly today. (now that i said that everything is going to fall apart though)
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