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Spark plug preference...Curious
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11-20-2019, 11:49 AM
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19Fordy
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,949
Re: Spark plug preference...Curious
I use NGK # GR4 2635 plug with 11/16 reach on MCF heads vintage 1999.
That was the plug suggested by Mark Kirby of MCF.
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