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Date:         Sun, 12 Mar 2000 09:33:23 -0500
Reply-To:     Glenn Britton <britton@NOC.UTORONTO.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Glenn Britton <britton@NOC.UTORONTO.CA>
Subject:      How to drill-out broken bolt extractor?
Content-Type: TEXT/PLAIN; charset=US-ASCII

I have been lurking on the list since I bought an 87 Westfalia last
October and can't hold by tongue any longer! (Actually I need
suggestions/advice on removing a broken exhaust bolt, with a broken
bolt-extractor from the head of the 2.1 waterboxer)
I have broken one exhaust bolt thats stuck in the head while removing
the complete exhaust system.  I tried propane torch/tapping with
hammer/penetrating oil over a couple of days...no luck.
Tried using a bolt-extractor made of chrome-vanadium steel and snapped it
off too...and of course it broke flush with the head so there is nothing
to grab at (~ 1cm of extractor is stuck in the bolt).  The drill bit
(titanium nitride coated) used for the
pilot hole in the bolt hardly scratches the broken extractor.


Anyone else been there? Solved it?  Any and all suggestions would be
appreciated.  I 'll report whatever works.


Glenn Britton
britton@noc.utoronto.ca
87 Westfalia, Toronto
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