jasonisdn

iTrader: (1)

looking at trying these in a 383, TFS heads with 12.5:1 and a shot. kit can go 300 but wanna start at 75 and work my way up. would you big nitrous users go colder?

Tony Shepherd

iTrader: (4)

I used that plug for a roughly 300 shot. It will work fine. If you start going above that a 3932 plug will be next.

Use a 3934 for a 150 shot

jasonisdn

iTrader: (1)

thanks tony that's the info i needed.

Wicked94Z

iTrader: (26)

3933 is pretty cold, you'll probably foul that on the street, I plan on running the ngk equivalent of a 3934 up to a 200 shot on my motor. Better cold than hot though

jasonisdn

iTrader: (1)

i was thinking a 3935 for the street . with the advice tony gave i was starting to think about having 3 different heat ranges. one for street one for running on 1 stage and the other for all of it i can shove down its throat.

jasonisdn

iTrader: (1)

http://www.sparkplugs.com/sparkplug4...+Charts&mfid=0
that is one of the charts i was going by.

Ray@Nitrous Outlet

I use the 3933 also....no real issues with driving around town, but I always run a fresh set when Igo to the track.

jasonisdn

iTrader: (1)

Ray whats your CR?

Wicked94Z

iTrader: (26)

i'm using the 3935s right now for street duty, they run great for me at 13.5:1 on e85. i'd recommend the ngk plugs on the spray though the r5671a-8 or -9

gregrob

iTrader: (8)

Why would you choose that plug over the BR7EF, 8, 9...?

Ray@Nitrous Outlet

approx 11:1

mdacton

iTrader: (3)

Is there a specific reason you guys rec. NGK plugs?

I always use autolites, Ive had good luck with them easy for me to read and they have them on the shelf at napa

Wicked94Z

iTrader: (26)

not using a stock casting head... these are gasket, not tapered seat plugs.


mdacton... ngks for nitrous, autolites for n/a is my understanding, just because the autolites won't burn the ground strap before the piston is toast.

Tony Shepherd

iTrader: (4)

You are correct. I just stay on top of my tune.

jasonisdn

iTrader: (1)

hey guys i didn't want to start another thread to ask this question.
on my nx kit today i sprayed the 75 and all was good . afr stayed around 12.5. i then jetted it for the 100 shot and it touched 13.6 . i let out soon as i saw it hit 13. i am wondering what you guys think about upping the jet on the fuel side from 31 to a 33 (that's the next size up i have) i know they use a 38 (i think, the list is down at the shop) for the 175. has anyone tried that yet? i want to do it this way due to the stand alone fuel system is at 41 or 42 psi right now and nx rates their systems at 40 or so they said on the tech line.

Ray@Nitrous Outlet

going a bit larger on the fuel jet will be fine...it will add a little more fuel and richen your A/F ratio up a bit

taner

iTrader: (6)

lol! so burning the ground strap doesn't hurt the motor ? not a poke at you just pointing out the obvious. either way you can tweak a piston and hurt the motor.

autolites are a tougher breed to read properly, but it just takes time and practice. i have run autolites for so long on the bottle that i wouldn't consider anything else for spray, it is just what i am comfy with. although i am tempted to try some ngk's for say a 100 - 200 hit of the gas.

jasonisdn

iTrader: (1)

thanks ray. if i ever need anything else on the nitrous side of my car more like when (next will be a nano kit) i will hit you up.

Ray@Nitrous Outlet

thx....btw we are a NANO dealer as well