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1941 Super Spark Plugs


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  • 2 weeks later...

I was using AC45 (what Bob's sells) and they were fouling due to my essentially nonexistant compression so I switched to AC47's off EBay. But now that the rings are done am hoping to go back to the 45s.

Cheers, Dave

I too was running the AC45 gapped around .025 for past years then i too ran out of usable compression . Now I am in deep into a rebuild .
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