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Discussion Starter · #1 ·
Hey guys!
I happen to have a new set of B7ES plugs lust laying around, Pretty sure a 70 bonneville asks for B8ES (which are colder, and which are currently in the bike, which could stand to be replaced) Would running the bike with the 7s cause any damage/gain any performance to a pretty well (slightly rich) running motor?

Thanks Yalls!
 

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Champion N3C's!! They are now under a new part number, but have always worked great in all my old 650's.
Jim
 
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champion N3 and N3G always fouled in my T120, and the NGK B8ES plugs never do.

i have no clue why.

try all the plugs people reccommend. use the ones that work best.
 
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