spark plug heat index
#1
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spark plug heat index
hey i was just wondering if anybody knew the difference in the spark plug heat indexes 9, 10, and 11 when buying spark plugs?
#2
i am not a girl
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the hotter teh engine runs the colder teh plug shoudl be, u will find that a lot of peopel on this forum use 9s all around. if you go road racign u might wanna try 10s on the trailing and 9s on the leading.
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rgordon1979
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03-15-22 12:04 PM