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Registered
Join Date: Mar 2007
Location: Fort Collins, CO
Posts: 1,277
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The problem, as I understand it, is that the heads are too thin. So the plug threads stick down in the combustion chamber and get corroded to the point where they no longer can be removed without damaging the head.
As others have mentioned this is a very common problem, and there are shops out there that know how to deal with it. Best of luck to you.
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1979 911 SC Silver
2002 996 race car
2005 Ford Excursion
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