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best way to remove bolt w/snapped head

I completely missed the freeze & release info.

Busted the other head off Fri night.

We tried;
torch
notch+screwdriver+channel locks+torch
welded nuts (spun off & removed some of the bolt each time)
I don't know what all else

Finally removed the intake manifold, dropped it off at a machine shop today.

I appreciate all the responses & advice.
 
Keep up on those antifreeze changes. :) Or at least "refresh" the additives.

I think galvanic corrosion is only part of the problem with the AL intake manifolds, I had to smooth the surface on my thermostat housing as it simply wouldn't seal until I did, yet it wasn't leaking from corrosion and visually there was nothing wrong with it, until I put a straight edge on it.

I always put some sort of non-hardening sealer on those type of bolts now. Both to make sure there are no leaks, and that I can remove them without issue when I need to. Only takes one issue like yours to learn that lesson.
 
In the <2 years I've had it, I've flushed the radiator once. The more I get into this K5 the more I despise the PO and their lack of effort.
 
Couldn't agree more dyeager.

I got the manifold back from the machine shop yesterday. He said both bolts were loaded with loctite. What kind of dumbass does that????
 
Low87 said:
Couldn't agree more dyeager.

I got the manifold back from the machine shop yesterday. He said both bolts were loaded with loctite. What kind of dumbass does that????
Click to expand...

On the thermostat housing bolts? Yikes!!! :eek1::eek1:
 
Wow some people's Po's are worse than others. This one is bad as ive heard. Hope he didn't do it to the rest of the truck too. What did it cost to remove two bolts? Either way that sucks. At least they saved the intake.
 
Fairly sure there's nothing else like that. I've been through most of the truck already.
The manifold unbolted easily enough, I was nervous what I would find there.

$50 at the machine shop.
 
Its strange you had so much trouble if they were coated with Locktite. I like the stuff because it usually prevents the bolts from freezing.
Of course, if it was the permanent type, you did not know it ahead of time and tried to remove the bolts without softening the stuff, then that explains it.

Which, going back and rereading it, sounds like the problem. When working with bolts that will get hot, like exhaust manifold bolts, or bolts with two different metals involved, like steel bolts into aluminum, I always use either Locktite or Nevrseize, depending on the situation.
Locktite will help prevent the bolt threads from seizing just like Nevrseize, but you have to heat the threads to soften it before you try to remove it.

In your case, the PO used it, and you did not know it.
 
50 is what I was thinking it would be. At least the rest of the crap came out of there and you got to see what was under it. Glad it worked out. Not a cheap
Fix but you know It wasn't something you DidTo it. He must
Have torqued them down pretty good too. From what I remember it
Only calls for 15 Ft lbs.
 
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