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Old 03-19-2025, 03:47 PM   #2
JP1738
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Default Re: JP1738's Stocker and S/G car

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Originally Posted by cad View Post
I noticed my AR3934 plugs doing the same thing last season.... I dont know the cause, as nothing had changed with my combo after the dyno. Switching back to NGK this season.
Yeah I need to do better about checking these plugs. I've been running that brand for a while and the center electrode always wears down like this after a period of time. Mine gets quite a lot of abuse between quarter-mile racing and nitrous for index racing. Not to mention if all goes to plan, I'll make 200-250 runs in it this year. I try to change them out twice a year to avoid the engine breaking up as it often does when the gap grows to this size. If I haven't changed them out in time, it'll typically let me know.
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Dawson Pauley
#2827 N/SA 1980 Malibu SW 2S 305/180
#2827 S/ST 1978 Mazda RX7 w/ 383 sbc/glide
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