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Author Topic: Spark Plug Question  (Read 4229 times)

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Re: Spark Plug Question
« on: October 11, 2012, 12:49:49 am »
I've never seen any hp gain from changing spark plug gap from .020 to .030.
But you can have a high rpm miss if you start to open the gap up.

If you change factory heat range to keep plugs from fouling, you have something wrong (jetting, fuel, ign)

 

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