RE: [DML] advice on stubborn bolt
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RE: [DML] advice on stubborn bolt



One other piece of advice:

If you can find a VERY well equipped automotive machine shop such as an 
engine rebuilding specialty shop where they deal with this kind of problem 
frequently, they may have a "disintegrator" that can erode the broken 
extractor and bolt out using an electric discharge. No broken extractor can 
stand up to the disintegrator. It chews up whatever is stuck in there with 
no problem and leaves cleans threads in its wake. This is the ultimate 
weapon in the war on broken bolts/extractors, but you may have some trouble 
finding one.

I try never to use the "easy out" style extractors. They are so brittle that 
they seem to snap all the time, and that just compounds the issue. Also they 
tend to expand the remanants of the broken bolt which only makes it tighter. 
  I try to use them only in places where if they should break I still have 
some other viable option. I've had nothing but bad luck with "easy outs" 
really, and whoever named them either never used one or is a liar!  ;)

-Joe Kuchan


>From: "Bill Koenig" <dmc06976@xxxxxxxx>
>Reply-To: dmcnews@xxxxxxxxxxxxxxx
>To: dmcnews@xxxxxxxxxxxxxxx
>Subject: [DML] advice on stubborn bolt
>Date: Wed, 01 Mar 2006 17:08:05 -0000
>
>hey everyone,
>
>i've been working on a major tune-up on my D for the past few weeks.
>one of the short bolts that attach the y water pipe to the engine block
>snapped off flush.  i tried drilling into it and using a screw
>extractor, which i thought was working until the screw extractor
>snapped off flush as well. i really have a problem now as the local
>machine shop said they could only work on it if i take my engine out
>and deliver it to them as they don't have anywhere to work on the whole
>car in their shop.  also, they said i'm going to have a hell of a time
>removing the broken screw extractor. help!
>
>bill
>6976
>
>
>
>
>
>
>
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