01-12-2002, 11:00 PM
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CC Member
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Join Date: Jan 1999
Location: Bakersfield,
CA
Cobra Make, Engine: HI-TECH 289 FIA
Posts: 363
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Not Ranked
Not all spark plug inserts are Heli-coils. Heli-coil is a brand name of a particlular style, a stainless coil with a patented locking arrangement. Other styles are usually little more than a threaded sleeve which, if not done properly, can easily remain on the plug when removed. I can not imagine a true heli-coil coming out without total destruction.
Regardless of the insert or head material, as Roscoe says, use anti-sieze
If there are still good threads in the head you can usually just reinsert the thread-sert kind.
Rick
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