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Author Topic: Best Spark Plug  (Read 1292 times)

jpointer1990

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Best Spark Plug
« on: May 19, 2021, 08:59:14 PM »
What is the best spark plug to use? I'm going to take the original Edisons that in my engine out of display purposes. I was wondering what the best/preferred spark plug is. I've seen Autolite 295 and NGK B4H thrown out as a couple. Also, what would be the preferred plug gap?
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pd

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Re: Best Spark Plug
« Reply #1 on: May 20, 2021, 06:33:31 PM »
I've run both of the plugs you listed and Autolite AP425 . All seemed to perform about the same . Pretty sure I gapped them at .024" .

Currently , I'm running an iridium NGK 3419 BR6HIX . Factory gap = .031" and I don't recall changing that .
Even though it's a resistor-type plug , I'm seeing better overall perfomance than with the other plugs I've used .

Pete . :)
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