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Thread: N20 plugs

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    Default N20 plugs

    Ok guys I have about 11.5 - 12:1 cr and I'm going to be running a 100 to 150 shot of n20. I went and looked at the posted spark plug reference chart and still wasn't sure which plug I should run. I was thinking just the 1 step colder plug. I also have the le trickflow heads. So should I just run the autolite 103. I have the br6es and they seem to cold they have my car spit and sputtering. I was running the autolite 3924 before
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    if ur running a br6 that is one steep cooler. but i would that that motor would need 2 steeps cooler with those heads and cr. but dont take my word for it. i know what works in my combo. call and talk to ur builder or the nitrous comp u r running
    Kyle

    just ur everyday slow LT1. wanna try her out?

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    When I was running with 100-150 shot, I was using the TR6 and they were fine. When I went to 200-250, it was suggested that I move to a non-projected style plug and I now use the BR7EF gapped to .35 and have not had any issues for the last 5 years.

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    I was gonna start out with a 50 and move up to a 100 and then step the plug colder to a 7 when I went to 150. But my car is running rich with just the one step colder. Like it can't burn the fuel it stumbles and spits and I didn't have any of these issues till I out the colder plug. Any suggestions. Could my cam have anythkng todo with it. It's a le speced billet lunati cam with a 109 lsa 600 intake lift and 608 exhaust lift. I'm also running 93 octane fuel now but will be switching to e85.
    Last edited by Arod6692; 05-14-2015 at 09:29 AM.
    1987 Buick Grand National GNX Clone!!!
    383CI, Forged Internals, LE Trickflow Heads, LE Ported Intake, LE Custom Grind Billet Cam,CC UltraProMags, MSD Optispark Coil Digital 6+box,NOS Mini Pro,Meziere EWP,58MM HolleyTB,60#Injectors,N2O Wet Plate Kit,Built 4l80E EDGE 3500,Strange s60,QA1 Shocks!

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    1987 Buick Grand National GNX Clone!!!
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    do u have a wideband o2? how do u know its that rich? and smell dont count. my car smells rich and its not (i know cause i have a wideband)
    Kyle

    just ur everyday slow LT1. wanna try her out?

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    I do have a wideband. And it's rich as well as the car sputtering and overloading I can tell. It doesn't have that crisp throttle response it had before the plug change either. The gauge is maxing it's self out at 10. So it's defiantly rich. I just don't know what just changing the plugs could do all that. What gap should I have a .035. There the Ngk br6es plugs.
    1987 Buick Grand National GNX Clone!!!
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    32-35 is what iv always gapped mine at depending on the tune up. if this started with goin to a cooler plug maybe try goin back and see what it does. dont spray it but drive it and see
    Kyle

    just ur everyday slow LT1. wanna try her out?

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    Yeah I was gonna just put the autolite 3924 back in and see if that clears up my problems and I guess figure it out from there.
    1987 Buick Grand National GNX Clone!!!
    383CI, Forged Internals, LE Trickflow Heads, LE Ported Intake, LE Custom Grind Billet Cam,CC UltraProMags, MSD Optispark Coil Digital 6+box,NOS Mini Pro,Meziere EWP,58MM HolleyTB,60#Injectors,N2O Wet Plate Kit,Built 4l80E EDGE 3500,Strange s60,QA1 Shocks!

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