Exhaust mani heat shield bolt broke and stuck

[90gst_sean]

I order a second gen exhaust manifold from a Mitsubishi gunk yard in California, seems like a great place. I live in Seattle Washington, so its a little ways from my normal junk yard dealings. I could get the name if someone needs it, they specialize in DSM and had a good selection. I think I payed $100 shipped for the manifold.

I get the thing in the mail and every thing looks great, but there was a bolt broken off in the upper left heat shield mount. No big deal, its not even critical to holding the shield on. So I left it.

Now its been a year, this will have been the second time I had the exhaust manifold off for a number of reasons. Each time I've remove the manifold, I've tried to remove the damn bolt.

The first time all I ended up doing was putting a hole through the middle of it. I had the wrong type of extractor.

This time I bot the right ones. Craftsman, Drill-out Power Extractor. The things were not cheap, let me tell you.

So, to make a short story shorter. Here are the pic's...



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For my next attempt, I will drill it the rest of the way and try to tap it. Any suggestions?

 

[dave99gst]

Drilling the entire thing out and a re-tap is the route i would go -
There is plenty of meat around the hole for a larger bolt if need be.

 

[90gst_sean]

Drilling the entire thing out and a re-tap is the route i would go -
There is plenty of meat around the hole for a larger bolt if need be.

Thanks Dave, thats what I'm thinling I'll do.

 

[kmoore]

Yeah those bolts are a pain on there. I broke the same one taking off my heat shield