Stock ignition + Nitrous ??

skiwesser · 07-19-2005, 05:42 PM

But I am trying to stop #2 plug from oil fouling ,which is causing the backfire, so you're saying still open the gap up?

07-19-2005, 07:48 PM

Oh yeah...I forgot about that #2 cylinder you were having problems with. Have you figured out why that #2 cylinder keeps fouling? Maybe you could just keep that one cylinder's gap a little lower...like .040-.045. I really don't have much experience with the whole fouling plugs thing. The fouling I'm sure is linked to the wear & tear on your high mileage motor. Someone else is going to have to chime in here. If I were you, I'd call the N.O.S. techline & explain your problem. They'll probably tell you not to juice a motor with a plug that fouls though. Good luck. Sorry I couldn't be of more help.

Hozer 88GTConv · 07-19-2005, 09:14 PM

If you really know/think you have a busted oil ring, I'd back off and fix it.
I lived with a bad broken oil ring on number 5 for over a year and kept telling myself that it might have been something else (bad intake seal, valve seals, guides, yatta..) I can't tell you how many plugs I changed and those stupid anti-foulers are a waste.

A bad ring will foul your plug right away, cause fuel to dump into the cylinder, and burn in the exhaust.
If I had to do it all over again, I would have just dropped the pan, pulled number 5 rod/piston out, re-ringed it and stuffed it back in the hole.
good luck...

07-19-2005, 05:42 PM	#1
skiwesser Registered Member Join Date: Sep 2000 Location: rock hill,S.C. 29730 Posts: 420	Re: Stock ignition + Nitrous ?? But I am trying to stop #2 plug from oil fouling ,which is causing the backfire, so you're saying still open the gap up? __________________ 88 GT: subs,pullies, 1 3/4 longtubes, flowmasters, AFR 165's,T,F #1 cam,Thyphoon intake, 24# inj., 73mm C&L,65mmT.B., 190LPH pump, Eagle sir rods, forged pistons in a newly rebuilt 306. DYNO TUNED TO 300.97 RWHP 337RWTQ

07-19-2005, 09:14 PM	#3
Hozer 88GTConv Registered Member Join Date: Feb 2002 Location: Jacksonville, FL Posts: 706	Re: Stock ignition + Nitrous ?? If you really know/think you have a busted oil ring, I'd back off and fix it. I lived with a bad broken oil ring on number 5 for over a year and kept telling myself that it might have been something else (bad intake seal, valve seals, guides, yatta..) I can't tell you how many plugs I changed and those stupid anti-foulers are a waste. A bad ring will foul your plug right away, cause fuel to dump into the cylinder, and burn in the exhaust. If I had to do it all over again, I would have just dropped the pan, pulled number 5 rod/piston out, re-ringed it and stuffed it back in the hole. good luck... __________________ 1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy

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07-19-2005, 07:48 PM	#2
Simi Stang Guest Posts: n/a	Re: Stock ignition + Nitrous ?? Oh yeah...I forgot about that #2 cylinder you were having problems with. Have you figured out why that #2 cylinder keeps fouling? Maybe you could just keep that one cylinder's gap a little lower...like .040-.045. I really don't have much experience with the whole fouling plugs thing. The fouling I'm sure is linked to the wear & tear on your high mileage motor. Someone else is going to have to chime in here. If I were you, I'd call the N.O.S. techline & explain your problem. They'll probably tell you not to juice a motor with a plug that fouls though. Good luck. Sorry I couldn't be of more help.