Reply To: Muncie 1B39 spark plug type

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November 5, 2022 at 4:02 pm #268687
Frank Cornine
Participant

    US Member

    Buccaneer and Harry,

    Thanks for the quick reply’s! I believe the Firestone plug is 14mm. I’ll pick up a Champion J8J plug and give it a shot. I was hoping to find a shorter, compatible plug that would provide more space between the terminal and the side cowl. But I’ll try the Champion. I can’t wait to get this Muncie back together and fire it up.

    Thanks again……