Spark Plugs: "Fan-Flame"
"Here's an interesting old NOS spark plug that has a fan for the center electrode. Looks like it would have a problem keeping a proper gap or even keeping the fan from flying off and out the exhaust port as it wears. This plug has 7/8" threads and they did come in 1/2" Pipe thread for your FORD. "
Photo by Jay Buscio, Sacramento. From Jays' post in the old forum: ACCESSORY OF THE DAY - 03/20/10
https://www.mtfca.com/discus/messages/1 ... 31376.html
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Spark Plugs: "Fan-Flame"
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