Re: 50s Johnson sparkplug?

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August 25, 2017 at 3:43 pm #63767
David Stanton
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    Just about all 1950s OMCs used Champion J6J plugs. Today’s offering is a Champion J6C. The C stands for Copper electrode. When you get into the 1960s, the bigger motors (40 HP up) mostly used the cooler J4J.

    I sent you a PM with more info.
    Dave