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Magnetos, Ignition Coils and Spark Plugs Discussion about magnetos, buzz coils, spark plugs, ignitors and low tension coils.

Magnetos, Ignition Coils and Spark Plugs

Edison no 3 Spark Plugs


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  #1  
Old 04-22-2018, 08:33:42 PM
twistr71 twistr71 is offline
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Default Edison no 3 Spark Plugs

Someone gave me about 20 of the plugs years ago
Anyone knows what they fit?
Seem kinda small for a car engine
Maybe for a model engine
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Old 04-22-2018, 09:59:17 PM
Pat Barrett Pat Barrett is offline
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Default Re: Edison no 3 spark plugs

If they are 10mm they are for early Chevy 6 cyl engines. (About 3/8" dia, at thread)
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Old 04-22-2018, 10:21:50 PM
Ken Karrow Ken Karrow is offline
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Default Re: Edison no 3 spark plugs

10mm Chef '41-'48, Some Tiny Tim type generators, somebody else chime in with more uses.
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Old 04-25-2018, 07:23:03 PM
sparky49 sparky49 is offline
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Default Re: Edison no 3 Spark Plugs

Also Packards and Buicks of the same era. Lots of these 10mm plugs out there for sale because they were easily fouled by the crude carbs of the day and most people had their heads drilled and re-taped for 14mm. Plug makers geared up to make those and then the market disappeared. Ironically, they are again making 10mm plugs for the computerized fuel injected modern engines.
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