1945 Evinrude speeditwin spark plugs

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  • trex014

    US Member - 2 Years
    Replies: 51
    Topics: 37
    #248107

    Took the old iron to the Atwood meet in Ohio for a maiden voyage and the thing ran great!! For about 10 minutes… then only on one cylinder. One spark plug died on me so I’m looking for new ones. Luckily the KE7 backup ran flawlessly.

    What were the original plugs used and are they any good modern replacements?

    Snapchat-1429644391

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    retiredoz

    US Member - 1 Year
    Replies: 513
    Topics: 26
    #248110

    My old Champion cat says for the 50-52 models use 5MJ or D-9J. Don’t know why it ignores the ’40’s models.

    • This reply was modified 1 month, 3 weeks ago by retiredoz.

    george-emmanuel

    US Member - 2 Years
    Replies: 430
    Topics: 30
    #248311

    You can also use the NGK AB-6 or AB-7. The 6 is a little hotter plug.

    George

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