Champion 31 spark plug ?

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Modeltmike
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Champion 31 spark plug ?

Post by Modeltmike » Sat Sep 26, 2020 6:45 pm

I have several champion 31 spark plugs. Can they be used in a model T? When I looked at a crossover chart they they crossover to champion 25. Thanks!
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John kuehn
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Re: Champion 31 spark plug ?

Post by John kuehn » Sat Sep 26, 2020 7:21 pm

What’s the difference. Heat range or?


BobShirleyAtlantaTx
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Re: Champion 31 spark plug ?

Post by BobShirleyAtlantaTx » Sat Sep 26, 2020 8:02 pm

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By the authority vested in me by a this bunch of outlaws,I hereby grant you permission to use those classic plugs in in your automobile. They should work just fine with a little cleaning. You might try a cotton buffing wheel and red rouge to clean the porcelain.

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Susanne
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Re: Champion 31 spark plug ?

Post by Susanne » Sun Sep 27, 2020 4:52 pm

It's a commercial application plug, I've seen them in it and miss engines, put a set in an old motorcycle, and I can't see any reason why they wouldn't work in a T.

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