Jealous Mechanic Did THIS:

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Emhendo

Apprentice
May 20, 2019
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Chicago Soufsidee
How to I get these broke off bolts out of my thermostat house/intake?
 

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DSPbuilt

G-Body Guru
Jan 7, 2016
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Welding a nut would be the best option. You can also drill and extract them.
 
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69hurstolds

Geezer
Supporting Member
Jan 2, 2006
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Depends. How were they broke off in there? It looks fishy. They're both perfectly sheared at the T-stat level. I've honestly never seen that by using non-hardening sealer. I think someone fugged up.

Since they shouldn't have any torque on them, you theoretically can drill a small hole in the center and use an appropriate EZ out to remove them. However, if there's been stuff like loctite on them, you'd have to heat that sh*t to boot. I mean, loctite would be an idiotic move on these, but with some people, they just don't get it.

Another idea is to weld a smaller size bolt on top of the busted off bolts and screw them out that way.

All else fails, then drill out the entire bolt until you almost reach the threads, then use a chisel and cave in the hollowed out threads and remove the debris. Then run a suitable tap down there and clean up the existing threads. JMO.
 
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69hurstolds

Geezer
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Jan 2, 2006
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Oh, it MAY be possible to use a dremel and take a tiny cutoff wheel and cut a slot in the end of what's left of the bolt. Use a flatblade screwdriver and just tweak them on out. Again, as long as someone didn't liquid weld them in place. Asking for a friend...
 
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UC645

Royal Smart Person
Apr 20, 2020
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Kittanning, Pa
Oh, it MAY be possible to use a dremel and take a tiny cutoff wheel and cut a slot in the end of what's left of the bolt. Use a flatblade screwdriver and just tweak them on out. Again, as long as someone didn't liquid weld them in place. Asking for a friend...
If the screwdriver trick doesn’t work, a hammer impact tool might do the trick.
 
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Ribbedroof

Comic Book Super Hero
Supporting Member
Jan 4, 2009
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Wellston, OK
If you're going to drill, get some left hand drill bits...sometimes you get lucky and they spin out

I'm betting they bottomed some soft bolts in the holes trying to get the tstat to stop leaking, judging by the sealer everywhere
 
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scoti

Royal Smart Person
Sep 5, 2019
1,979
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Texas
I checked this out because of the title. Ok, broken/sheared thermos housing bolts.

"Jealous Mechanic Did This" ?? What's the story behind the title?
 
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pontiacgp

blank
Mar 31, 2006
29,270
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Kitchener, Ontario
you use a nut and weld the broken bolt to it by filling up the center of the nut with weld.....or drill it out and if you mess up the thread you can install a helicoil.
 
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