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Old 02-20-2014, 01:40 PM   #13
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,575
Quote:
Originally Posted by Steve Tinker View Post
Ahhh - back to that thorny question of using / not using anti-seize on the plug threads.
I do, but Porsche says not to.......
Porsche's rational for that has to do with the type of anti-seize compounds that used to exist vs. what you can get now. Old types were not particularly electrically conductive, which could lead to misfires because the plugs were not properly grounded; new types are metallic (usually copper or aluminum based), which are conductive. Use a small amount of anti-seize and your cylinder heads will thank you. We have been doing it for decades and have never had a misfire, a plug come loose, or one pull the threads out of an expensive cylinder head..........
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