Re: 49 Champion – expansion plug?

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July 20, 2015 at 1:20 am #20432
vintagedave
Participant

    There is a slight shouler inside the opening. The plugs that I ordered are .377", I measured the opening at .380".
    I’ve installed cup style automotive freeze plugs before, but this is my first attempt at this size and style. I’ll take all of the advice I can get.