spark plugs again

[94Snake]

can i run a set of stock heat range plugs gapped at .032 with a 125 shot of nitrous??? i've fouled out my second set of ngks and i hate having to order them from advance auto. second will having my bottle mounted in the trunk sideways effect the flow. i keep the pressure at 900 psi with a bottle warmer and the bottle is tilted a little to compensate for nitrous moving when under full throttle.

[Gt]

How are you fouling out the plugs?

[Azn Kenny]

Stock heat range may be a little too hot for the size shot you are running, I would go with 1-2 heat ranges colder of possible, I order my NGK's through eBay, real cheap there (luckily I only need half as much as you do).

As for bottle location, sideways will not affect flow, just make sure there are no hard bends in the n2o line.

Btw your bottle heater is positioned wrong, it goes under the bottle (ZEX sticker facing down).

http://www.horsepowerinabox.com/HPIABV8/images/f14164nossm.jpg

[Greg Kulbick]

Ideally the bottle would be facing forward. The inertia from the car moving forward will push the gas to the back and bottom of the tank where the pick up is. Of course when its that low you're going to have shitty pressure anyway. Definitely stick with colder plugs.

[Benjamin]

How are you fouling out the plugs?


1994 Mustang Cobra- #794 of 5009. 5.0, 5 speed manual, ZEX Dry Kit, etc. 13.46@102

I'm with GT on this one you should be "burning" plugs not fouling them out with a dry shot of that magnitude.... I'd run some Autolight 23 or 24's as stock heatrange for a 5.0 is a 25..... Advance or Autozone should have them in stock and they have a 2 YEAR WARRANTY you know what that means....

[94Snake]

hey i just bought some AR-94s, isn't that what you recommended GT???

[94Snake]

I'm with GT on this one you should be "burning" plugs not fouling them out with a dry shot of that magnitude.... I'd run some Autolight 23 or 24's as stock heatrange for a 5.0 is a 25..... Advance or Autozone should have them in stock and they have a 2 YEAR WARRANTY you know what that means....


i think mine were autolite 926 or something because i'm running the gt-40 iron heads. i asked about 924 and they said it didn't exist.

[Gt]

something like that, always had good luck with autolites...

[NotoriousGreaseMonkey]

NGK's are crap IMO go with the autolites. Use platinum only if it came OEM with them other wise use standard plugs. I agree with GT also at least 2 ranges colder. You never did answer how you were fouling are they black or gray white?

[94Snake]

NGK's are crap IMO go with the autolites. Use platinum only if it came OEM with them other wise use standard plugs. I agree with GT also at least 2 ranges colder. You never did answer how you were fouling are they black or gray white?

when i pull these plugs i'll take pics and post them. all i know is the car runs like shit after swapping stock heat range plugs to these ngks.

[SVT P-Tree]

I was also curious about new plugs, when I get my heads back I was going to switch them out, are the Bosch Platinum 4 tips good ones?

[Gt]

Hype is all the 4 tip plugs are worth, not worth the price at all.

[SVT P-Tree]

so what would be some good ones to get? The autolites?

[Gt]

yup, I tried Denso's in the 02. Did nothing for power, the autolites in it now run just as good.

[4348rd]

autolite for the ford period , nothing better for the ford to me

[94Snake]

the AR-94s are sweet, shortened grounding strap and all. drove fine off the bottle and never pinging while on the 125 shot.

[93zm6tally]

I just about posted about the "fouling" plugs because I was confused, but it looks like somebody else already did. Colder plugs, everything else being equal are going to foul even easier. Sounds like you might have an A/F mixture problem, which probably would occur without the Nitrous. I also noticed what looks like a seperate Nitrous fuel tank. Is it possible that you're getting too much fuel, or too little Nitrous when you hit the button, that would explain the fouled plugs.

[94Snake]

well listen to what this jackass (me) did . so anyway pulled the ngks and they looked more towards the leaner side of things if anything but myself and luv_my_z28 both thought they should be fine. turns out i fried another fireball ignition due to a wiring issue. what i had done was hooked up the wire that controls the rev limiter and ignition retard straight to the battery instead of running it to a normally open switch that the schematics call for. so the shit is getting juice all the time instead of switching it on. put the new plugs in and thought i'm just not buying another one for awhile, my stock ignition should work just fine. well i had the distributor set at 14 degrees advance so i wanted to pull it back to 10 because that's what i always run at the track is 10 degrees for the 125 with racing fuel. well i turned on the timing and pulled the spout connector before starting it and guess the fuck what. i had that bitch on 10 degrees already. so that means when i was pulling 4 degrees at the track i was pulling 4 from 10 instead of 14. so i believe that's where my big power loss was coming from. i'm going to SGMP on the 12 to put the theory to the test.

[NotoriousGreaseMonkey]

Update???

[94Snake]

going to the track tomorrow (friday) anyone else going??

[luv_my_z28]

i'll probably be going with you