SDB

iTrader: (7)

I needed a 30 fuel jet, but could not find a NX one locally, but did find a NOS brand jet (brass). Are these interchangable?

Thanks,

SDB

iamsickofitall

iTrader: (18)

i do not believe so

gator's 99TA

iTrader: (2)

nope.

mrr23

iTrader: (3)

yes they are. i've done it on my car. they just aren't exactly the same. but, the NOS will fit. the nytrex kit i have uses NX jets. i've talked with the owner of NYTREX and he said you can swap them. the NOS jets are just a bit smaller externally than the NX ones.

mrr23

iTrader: (3)

here are pics of the two next to each other. the only differences are length and at which side the orifice restriction is.

rear side of the jets. NX left NOS right. NX restricts the orifice on the rear side (neck). NOS restricts on the front side (mushroom).

mrr23

iTrader: (3)

and yes, my camera sucks at close ups. what do you expect from a $100 camera?

SDB

iTrader: (7)

I can see the visual difference your talking about, and since I am going from a 31 to a 30 to slightly lean it out, I will not chane it with a different brand jet....thanks

SDB

NXRICKY

iTrader: (1)

not not at all, they can not be inter mixed. The shaft on an nos jet is longer and will not seat in an NX fittings. Also it will not flow the same.
Ricky

mrr23

iTrader: (3)

i understand the longer shaft part. but, why would to different brand jets flow differently if they are both the same number? if it's a #30, wouldn't both be drilled .030" maybe has something to do with where the restiction is. NOS in the neck part and NX on the mushroom part.

mrr23

iTrader: (3)

also, would using NOS 71/40 jets be the reason why i'm only getting 91 rwhp from a 180ish setting? and would i get the proper amount to the rear wheels if i did use the NX instead?

NXRICKY

iTrader: (1)

No, one design flows better than the other. Like an air box, they both fit, have the same connections, yet one makes more power. 73/41 @ 55psi is what I would use with a NX system. I do not understand the nos brand stuff, maybe Robert 56 can help.
Ricky

LETZ RUN

iTrader: (11)

91rwhp, out of a 180shot is good for a NOS kit

mrr23

iTrader: (3)

i called nytrex. this only applies to his nozzles. ken designed his nozzles to accept both NOS and NX jets. he supplies NX jets with his kits. so, for NX designed nozzles, the NOS pills may not fit properly.

letz run - i do not have a NOS brand kit. i have a nytrex kit. the last time i dyno'ed the wife's car using the 71/40, the o2s were at 1.0x mv on the top end. so, i'm sure i can squeeze out some more once i get the a/f ratio to a better level. 1.0 mv is about 10:1 a/f ratio or under. so, i'm a weee bit rich. have a dyno day coming up soon. i'll play with the jetting some.

mrr23

iTrader: (3)

yeah ken and i discussed the whole tapered inlet/outlet of the NX design. now what does the 73/41 equate to hp wise?

LETZ RUN

iTrader: (11)

ahh.. cool.. no problem man, i was just lookin for a reason to NOS . hope you get it all worked out.