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what size jets for 50/75/100 wet shot? (NX)

  • Thread starter Thread starter the98stang
  • Start date Start date Aug 30, 2006

the98stang

Active Member
Aug 12, 2005
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47
Clovis, CA
Aug 30, 2006
#1
  • Aug 30, 2006
  • #1
So in the bag that came with my jets in the NX kit, there's a slip that states the jet sizes for different HP ratings. For 50 horses it says to use 38(n2o) and 22(fuel). For a 100 shot it states 52(n2o) and 28(fuel). THEN I look in the back of the NX install book and the numbers are DIFFERENT than stated above.

The NX install book states 35 (n2o) and 20(fuel) for a 50 shot. Then for a 100 shot it says 52(n2o) and 33 (fuel). These are both listed under the 2000 GT 4.6L . Right below that it says "52(n2o) and 28(fuel)" for a 4.6L 4v. The 50 shot is listed as 35/18 for the 4v. So I call NX and talk to a guy. HE says to "use the slip that came with the kit and the provided jets, NOT the book." To me that makes no sense at all. So WTF do I do? Too much fuel and BYE BYE intake. Too little and hear comes that lovely knockin'! Please help me guys...

BTW- this is for a 2000 4.6L 2V, NX plate kit
 
P

Pennywise2

Banned
May 16, 2006
1,379
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0
Aug 30, 2006
#2
  • Aug 30, 2006
  • #2
Start with a 75 or 100hp jets and work your way up.
I started with 75hp jets on my old 92 GT.
Happy Spraying Tanner!
 

hotmustang331

Active Member
Apr 29, 2004
2,967
3
48
Bastrop,TX
Aug 30, 2006
#3
  • Aug 30, 2006
  • #3
^That didnt help him any . DId you read his question? HE DOESNT KNOW WHAT JETS TO USE TO GET 100HP!


Tanner, they can mix up the cards...but the book should be consistent...especially if its listed for "4.6 2V" . People screw up sometimes, and may have given you an LS1 card. Good luck! and remember to put it on a dyno SOON!
 

fastangboi

My first set of nuts vibrated themselves off.
Jul 26, 2006
274
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0
Slowville
Aug 31, 2006
#4
  • Aug 31, 2006
  • #4
Ive been having a hard time running down the right numbers for my set up too. I bought it off of a guy that had a non-PI mustang and he told me it was a 125 shot but ive seen these also listed as a 150 shot. the pills are 59(n) 37(f), and its also going on a 2000 GT. does any one run this combo or know the power it makes on a pi motor?
 

BooWFO

New Member
May 10, 2005
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Louisville, KY
Aug 31, 2006
#5
  • Aug 31, 2006
  • #5
52 / 33 N/f is the NX jetting for a 2v the 4v is different, I beleive because of the higher Fp from the factory.
 

BooWFO

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May 10, 2005
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Louisville, KY
Aug 31, 2006
#6
  • Aug 31, 2006
  • #6
fastangboi said:
Ive been having a hard time running down the right numbers for my set up too. I bought it off of a guy that had a non-PI mustang and he told me it was a 125 shot but ive seen these also listed as a 150 shot. the pills are 59(n) 37(f), and its also going on a 2000 GT. does any one run this combo or know the power it makes on a pi motor?
Click to expand...
a 59 nitrous jet is a 150 size jet I believe.
 

mattmoto441

New Member
Aug 27, 2006
1
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0
Aug 31, 2006
#7
  • Aug 31, 2006
  • #7
im running a 75 shot right now with a 42=N2O 28=fuel its a very clean shot

View attachment 443852
 

mattmoto441

New Member
Aug 27, 2006
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Aug 31, 2006
#8
  • Aug 31, 2006
  • #8
BooWFO said:
52 / 33 N/f is the NX jetting for a 2v the 4v is different, I beleive because of the higher Fp from the factory.
Click to expand...

woha!!??!! no jets are jets N2O is N2O, if you have a N2O kit jetted for a 75 shot it dosent matter what car or if the car is a 2v or a 4v you put it on it will give you a 75 shot all that matters is if you car can handel the extra HP

mattmoto441 said:
im running a 75 shot right now with a 42=N2O 28=fuel its a very clean shot

View attachment 443842
Click to expand...
someone should make this jet chart a Sticky
 

fastangboi

My first set of nuts vibrated themselves off.
Jul 26, 2006
274
0
0
Slowville
Aug 31, 2006
#9
  • Aug 31, 2006
  • #9
Where did this jet chart come from? what says its correct?

Im running a 37 fuel jet with a 59 nitrous jet, id hate to follow this and lean out.
 

mattmoto441

New Member
Aug 27, 2006
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0
Aug 31, 2006
#10
  • Aug 31, 2006
  • #10
fastangboi said:
Where did this jet chart come from? what says its correct?



Im running a 37 fuel jet with a 59 nitrous jet, id hate to follow this and lean out.
Click to expand...

its the jet chart from NOS and Nitrous works and Nx will use the same jets also
 

the98stang

Active Member
Aug 12, 2005
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47
Clovis, CA
Aug 31, 2006
#11
  • Aug 31, 2006
  • #11
mattmoto441 said:
its the jet chart from NOS and Nitrous works and Nx will use the same jets also
Click to expand...

I'm sorry but that chart is COMPLETELY different than the chart listed in my NX book....
 

mattmoto441

New Member
Aug 27, 2006
1
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Sep 1, 2006
#12
  • Sep 1, 2006
  • #12
the98stang said:
I'm sorry but that chart is COMPLETELY different than the chart listed in my NX book....
Click to expand...

NOS and NW use the same jet sizes, i guess NX might be different now maybe i will call them and find out
 

BooWFO

New Member
May 10, 2005
991
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Louisville, KY
Sep 1, 2006
#13
  • Sep 1, 2006
  • #13
mattmoto441 said:
woha!!??!! no jets are jets N2O is N2O, if you have a N2O kit jetted for a 75 shot it dosent matter what car or if the car is a 2v or a 4v you put it on it will give you a 75 shot all that matters is if you car can handel the extra HP


someone should make this jet chart a Sticky
Click to expand...
No the 4v uses a different fuel jet. Seeing as you come in here claiming to be a Nitrous guy I'm sure you realize that different fuel pressures call for different size fuel jets in a wet system. Same as bottle PSI. IF manufacturer X rates at 900psi and manufacturer Y rates at 1050psi the nitrous jets will also be slightly different.
But of course I'm sure you already knew all that.

BTW here are a few online Nitrous jet calc charts
http://www.robietherobot.com/NitrousJetCalculator.htm
http://coldfusionnitrous.net/calculator.aspx
http://www.diy-nitrous.fsnet.co.uk/
 

mattmoto441

New Member
Aug 27, 2006
1
0
0
Sep 1, 2006
#14
  • Sep 1, 2006
  • #14
NOS says for a single fogger you need a 41,26 to get a 75shot NW says you need a 42,28 for a 75shot, the chart i got came from NW, well as for your sites you can change the fuel psi all day and the fuel jet sizes stay the same ?? maybe he should just call up the maker of hit kit and have them give the right jet sizes, so if he smoaks the motor its his/there falt and not what the guys on the net are saying
 
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