Has anyone tried using a thread locker on a Helicoil insert? It may be
necessary to run a bottom tap into the insert to clean any locker out of
the threads, but that shouldn't be a problem.
You might look for a threaded insert to use as a replacement. You drill
a larger hole, tap it and run the insert into that hole. Similar to a
Helicoil, but the insert is solid.
Peace,
Pat
Thusly spake Jim Stone, On 2/26/2011 10:03 AM:
> Well, the coil is out, but it wasn't easy and it wasn't pretty. It didn't
> unscrew so much as unravel. In pieces. (I tried one of my Easyouts to start,
> but the hole isn't deep enough to allow any of the threads on even my largest
> one to grab anything.) Gabbing an end with a needle nose and unscrewing
> resulted in it coming out in about three pieces. It never unscrewed - the
> pliers just made it small enough to pull out a piece without severely damaging
> the threads.
>
> So, now I am on to the next problem: replacing it. I am off to NAPA to buy a
> replacement, but I don't expect this to be a walk in the park either. I know
> now why the original failed. The thread hole is slightly enlarged around the
> outside edge of the coil, meaning the threads are only holding on the bottom.
> I think that lead to the damage that was preventing me from screwing the stud
> in and my struggles with the pliers only made it worse. To compound the
> problem, depth of the thread is limited by a head bolt that goes right through
> the hole, so I won't be able to use a punch to remove the tang on the coil.
> Right now I am thinking of screwing the coil in and leaving the tang; it can't
> be snapped off by the stud as the head bolt will stop it from moving. I am
> also thinking about packing the flared outside end with a little JB Weld. It
> don't expect that to add any real strength, but it might prevent the new coil
> from unraveling the next time around.
>
> At least, that is what I am thinking at the moment, but would appreciate any
> thoughts or opinions.
>
> Jim
--
Pat Horne, Owner, Horne Systems
(512) 797-7501 Voice 5026 FM 2001
Pat at HorneSystemsTx.com Lockhart, TX 78644-4443
www.hornesystemstx.com
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