Re: Speeditwin Spark Plug Choices

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August 30, 2015 at 6:42 pm #22920
mini-motors
Participant

    I’d like to point out that spark plugs are "heat range" sensitive, and using the proper heat range plug is important. If you run a plug too cold, it won’t burn the mix completely, and a plug too hot could burn a hole in a piston(extreme case scenario). Using a conversion chart, the old Champion #0 equates to a new Champion W10 plug.