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Chino886
05-30-2005, 06:03 PM
I need help!

I was riding this past weekend and the spark plug threads have stripped out, does anyone know what I can do to fix this problem? I have heard something about "helicoil"??? from the guys that towed me in from the dunes. The spark plug does not fit in the hole now. Has this ever happened to anyone? What could be the cause?

D
2004exrider
05-30-2005, 06:25 PM
with a helicoil, you take the head off and rill out the spark plug and thread it, then you insert the helicoil (looks like a spring almost) it threads in then your spark plug goes back in. with yours, did you cross thread or over tighten it.
RiderTRX400ex
05-30-2005, 07:10 PM
yea id try helicoil first, if that fails u might needa spend some money :ermm: although helicoils arent to cheap :grr:
prepracing
05-30-2005, 09:10 PM
don't think I would heli-coil a sparkplug hole, I've not heard any lasting success on one of those yet. I would be searching for a used head.
Chino886
05-30-2005, 09:56 PM
Where can I get helicoil? I think I overtightened the plug.
quad2xtreme
05-31-2005, 08:31 PM
Any good auto part store like a NAPA dealer or Ace Hardware.

Permatex makes a thread repair kit you might try. I know Ace Hardware sells it.

/Jon
Nick110
06-01-2005, 04:41 AM
tap it out. u need a 12 mm 1.25 thread tap. u can get them at autoparts stores.
ZSK
06-01-2005, 09:42 AM
Originally posted by prepracing
don't think I would heli-coil a sparkplug hole, I've not heard any lasting success on one of those yet. I would be searching for a used head.

Why exactley wouldn't you helicoil a spark plug hole? A helicoil is a perfect thread and the automotive industry has been helicoiling spark plug holes on aluminum heads for years.