Re: Champion 849 plug

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October 1, 2017 at 4:26 pm #65636
Buccaneer
Participant

    US Member

    I used some in a 1940 Johnson DT-10, as the spark plug
    cover would ground out the longer plugs when it’s
    installed. Only ran it in a while in a test barrel, but
    seemed okay.
    Am curious if they’re the same heat range in J6C’s?

    Prepare to be boarded!