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Old 01-11-2010, 05:22 PM
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2door 2door is offline
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Location: Littleton, Colorado
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Default Re: Shorty Spark Plugs

Originally Posted by mdlee1958 View Post
Since the purpose of the porcelain is to insulate and control the amount of spark I woud say your right 2Door.
Actually, mdlee, the longer thread plug is the one I always run in 26" bikes. It is the replacement for the kit supplied plug that many of us use, the NGK-6-HS. There's no piston interference with it. And as far as that goes, the shorter thread reaches into the combustion chamber the same distance. Thanks for the reply. And I neglected to add in my earlier post that I have installed the short Autolite plug and the engine seems to like it just fine.
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