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[Shop-talk] Replacing a damaged helicoil

Subject: [Shop-talk] Replacing a damaged helicoil
From: pat at hornesystemstx.com (Pat Horne)
Date: Fri, 25 Feb 2011 18:58:09 -0600
References: <COL115-W18EF15A78C8164733C07E3CCDC0@phx.gbl> <4D684832.8040901@hornesystemstx.com> <4D684D6C.6050509@tx.rr.com>
Nope, anything that would grip the inside of the insert will just 
tighten it into the hole.

If you have someone local that has an electrochemical machining machine 
that can be used with the head in the car, that will also work, but it 
requires that the hole and area around it be flooded with a fluid, so 
the hole needs to be on top of the head.

Peace,
Pat

Thusly spake BJNoSHOV8, On 2/25/2011 6:46 PM:
> Can they be removed with a standard square EZ-out?
>
>> If you try to unscrew the helicoil using the bent piece at thee 
>> bottom of the hole it won't work. When the helicoil is installed it 
>> uses that tang to reduce the diameter of the insert slightly, 
>> allowing it to be screwed into the hole. Trying to turn it backwards 
>> will make the insert tighter.
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-- 
Pat Horne, Owner, Horne Systems
(512) 797-7501 Voice            5026 FM 2001
Pat at HorneSystemsTx.com       Lockhart, TX 78644-4443
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