I would get a file with a triangular cross-section and carefully file a few
grooves inside the hole perpendicular to the threads (trying not to file the
threads). Then, I'd try to chisel the sections out.
You could also try tapping out the hole--don't know if that plug is pipe or
straight thread--but I'd try filing and chiseling first.
Bob
--------------------------------
Bob Spidell - San Jose, CA
----- Original Message -----
From: "paulbrodeur" <brodeur@frontiernet.net>
To: healeys@autox.team.net
Sent: Monday, January 18, 2010 3:42:57 PM GMT -08:00 US/Canada Pacific
Subject: [Healeys] Temperature thermocouple
I have a 60 Healey BT7 that sat in the Bullhead City, Arizona desert for 25
years.
Unable to break free the temperature thermocouple-retaining bolt, I cut the
capillary tube so as to be able to remove the engine/gearbox.
With the engine on the floor, nothing (penetrators, heat, cold, easy outs)
broke free the bolt. The last drill bit I used to drill out the bolt was
7/16" and I am afraid to move to the next size for fear of damaging the
block threads.
Any advice on what my next few steps should be would be greatly
appreciated.
Thanks, Paul
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