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iownaGN-GS

New Member
Joined
Jul 8, 2004
Messages
5
ready for new plugs again, been there done it. can someone advise the best, most reliable plug to use for the '87 GN?
thanks.
 
Depends on the combo, but I have had good luck with both AC-CR43TS, and NGK UR-5's. :)
 
That's how I gap them for street use. Tighten them up a bit when racing. :)
 
AC Delco CR43TS plugs gapped at .032" for over 20 psi of boost... .035" if you run under 20

never had problems with these plugs...
 
a little note I bought 2 sets of ac plugs about 2 years ago from (advance auto parts) & haven't bought a set since, they have a 1 year warranty look on the reciept the next time some one buys a set there. same thing on 02 sensors
 
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