Re: spark plug hole stripped

Ron Brown /
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My 2 cents worth.

For stripped holes other than spark plugs, Helicoils are the way to go.

Because spark plug are removed and replaced so often, the one piece insert, mentioned elsewhere in this thread, with a shoulder to tighten up against is a better solution. I dont remember the brand name of these, but they are readily available at auto parts and hardware stores.

Down sides to helicoils are that the sealing surface between the head and the plug are reduced by the size of the helicoil, the coil can loosen and move in the hole as you change plugs and my all time favorite, which I saw last year, the inner turn of the helicoil extends into the combustion chamber where the head can no longer heat sink it. This coil then gets hot enough to glow like a glow plug and fire the mixture as soon as the transfer ports open.

It did not backfire through the carb because it had reed valves, but it really did a number on all the crankcase seals. I think the only reason it continued to run was it was a two cylinder.

Ron

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  spark plug hole strippedTopic by: GK GK 06/05/02 07:04PM
  Re: spark plug hole strippedRe: chuck russo va chuck russo va 06/05/02 07:06PM
  Re: spark plug hole strippedRe: Wayne Wayne 06/05/02 07:29PM
  Re: spark plug hole strippedRe: GK GK 06/05/02 07:47PM
  Hacking, Jury rigging and bodgingRe: Wayne Wayne 06/05/02 08:03PM
  Re: Hacking, Jury rigging and bodgingRe: chuck russo va chuck russo va 06/05/02 08:15PM
  Re: Hacking, Jury rigging and bodgingRe: Matt Wilson Matt Wilson 06/05/02 08:22PM
  Re: Hacking, Jury rigging and bodgingRe: Matt Wilson Matt Wilson 06/05/02 08:27PM
  here ya go...Re: Casey B Casey B 06/05/02 08:33PM
  Re: spark plug hole strippedRe: Fred Fred 06/05/02 08:46PM
  thanksRe: GK GK 06/05/02 08:52PM
  Re: thanksRe: Casey B Casey B 06/06/02 09:53AM
  Re: Fred: QuestionRe: Wayne Wayne 06/05/02 09:00PM
  Re: Fred: QuestionRe: wonko wonko 06/05/02 09:56PM
  Re: Fred: QuestionRe: Wayne Wayne 06/05/02 10:16PM
  Re: VW S.O.P.Re: Jim C. Jim C. 06/05/02 11:00PM
  Re: VW S.O.P.Re: Joel Joel 06/05/02 11:52PM
  listen to the good adviseRe: Ken D Ken D 06/06/02 03:11AM
  Re: spark plug hole strippedRe: ItsLookingUp ItsLookingUp 06/06/02 09:35AM
  Re: spark plug hole strippedRe: Ron Brown Ron Brown 06/06/02 11:03AM
  Re: spark plug hole strippedRe: Ron Brown Ron Brown 06/06/02 11:13AM
  Re: spark plug hole strippedRe: GK GK 06/06/02 04:03PM

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