Cyberz350's Nitrous Install Thread (ongoing)
01-19-2004, 01:44 AM
#42
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Well, guys, time for an update:
I just didn't feel anything with the 50 hp jets so I came home and installed the 75hp jets. I have a nice empty strip of road behind my house to test in. I started in 1st, not spraying, shift to second hit the activation switch, and floor it, spraying through 2nd and 3rd, lifted at around 6K to be safe and shifted into 4th to cruise.
This time, I could definately feel the nitrous kick in, I almost pissed my pants, the difference between 75 and 50 was insane. I was ecstatic. I used my pocket logger to log my o2s and rpm during the 1st-3rd gear pass. My o2s on bank 2 was around .85 at 3500rpms and got as high as .92 on 2nd gear and .88 on 3rd gear.
I got this graph from www.dynotune.org So I'm not too sure how accurate these numbers are. But judging from the graph, my A/F was around 13.7 and probably getting as low as 12 in the higher rpms.
Gauge READING FULL THROTTLE AIR/FUEL RATIO
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1
I also did a freewayrun in 5th gear from about 3500rpms to about 6000rpms, which took me to a little over 120mph. My o2 was around .86 through those rpms, which (again using the graph) translates to around 13.6
I got my o2 numers from my pocketlogger, which isn't too precise of an instrument, so I still plan on going to a real dyno and getting real numbers, but what do you guys think about the figures i got from my logger? You think I"m too lean?
I just didn't feel anything with the 50 hp jets so I came home and installed the 75hp jets. I have a nice empty strip of road behind my house to test in. I started in 1st, not spraying, shift to second hit the activation switch, and floor it, spraying through 2nd and 3rd, lifted at around 6K to be safe and shifted into 4th to cruise.
This time, I could definately feel the nitrous kick in, I almost pissed my pants, the difference between 75 and 50 was insane. I was ecstatic. I used my pocket logger to log my o2s and rpm during the 1st-3rd gear pass. My o2s on bank 2 was around .85 at 3500rpms and got as high as .92 on 2nd gear and .88 on 3rd gear.
I got this graph from www.dynotune.org So I'm not too sure how accurate these numbers are. But judging from the graph, my A/F was around 13.7 and probably getting as low as 12 in the higher rpms.
Gauge READING FULL THROTTLE AIR/FUEL RATIO
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1
I also did a freewayrun in 5th gear from about 3500rpms to about 6000rpms, which took me to a little over 120mph. My o2 was around .86 through those rpms, which (again using the graph) translates to around 13.6
I got my o2 numers from my pocketlogger, which isn't too precise of an instrument, so I still plan on going to a real dyno and getting real numbers, but what do you guys think about the figures i got from my logger? You think I"m too lean?
01-22-2004, 01:25 AM
#43
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Here's a picture of my SPX adaptor, installed and leakless. Definately need O-rings from the dealer Part# 16618-10v10, got it for 2.78 at the dealer. You'll also need a 4AN - 1/8" NPT (red) from NOS, part #17961NOS. An autozone in my area was a dealer for NOS and I ordered that fitting from them. It was about $20. You'll also need some longer screws (Home depot), you might as well pick up some spacers while your there. I don't have any spacers, I was just careful when I tightened down the fuel damper, no leaking. So overall cost for O-ring, Fitting, screws, and SPX adaptor was around $60. But I'm happy with it.
01-25-2004, 01:18 AM
#46
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Here's the switch that goes behind the gas pedal. I forgot to post this one. Pretty straight forward, pretty sure there are other ways to mount it but this is how i did mine.
02-25-2004, 01:50 PM
#47
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I used to use a old black shirt to cover my bottle, it worked alright, but this is what I wanted to do to begin with, I just never had a chance to do it till just recently.
03-02-2004, 04:08 PM
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Not yet, I want to get a couple safety components, mainly the window switch before I go to the track. And I still have to get dyno'd, just haven't had a chance yet.
03-02-2004, 04:42 PM
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what do you have to do to keep the line from leaking out when you install the SPX adaptor.... going to be installing mine in about 3 days need this info desperatly i dont want to spill fuel all over the joint......and does anyone have a shark nozzle for sale all i have is my old fan nozzle from my old car for a dry kit nos powershot im converting it to a wet kit and adding the fuel seloniod!!!
Thanks guy!!!
Thanks guy!!!
03-02-2004, 09:26 PM
#52
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Originally posted by cyberz350
Here's a picture of my SPX adaptor, installed and leakless. Definately need O-rings from the dealer Part# 16618-10v10, got it for 2.78 at the dealer. You'll also need a 4AN - 1/8" NPT (red) from NOS, part #17961NOS. An autozone in my area was a dealer for NOS and I ordered that fitting from them. It was about $20. You'll also need some longer screws (Home depot), you might as well pick up some spacers while your there. I don't have any spacers, I was just careful when I tightened down the fuel damper, no leaking. So overall cost for O-ring, Fitting, screws, and SPX adaptor was around $60. But I'm happy with it.
Here's a picture of my SPX adaptor, installed and leakless. Definately need O-rings from the dealer Part# 16618-10v10, got it for 2.78 at the dealer. You'll also need a 4AN - 1/8" NPT (red) from NOS, part #17961NOS. An autozone in my area was a dealer for NOS and I ordered that fitting from them. It was about $20. You'll also need some longer screws (Home depot), you might as well pick up some spacers while your there. I don't have any spacers, I was just careful when I tightened down the fuel damper, no leaking. So overall cost for O-ring, Fitting, screws, and SPX adaptor was around $60. But I'm happy with it.
03-03-2004, 04:59 AM
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Howdy all
Howdy all!
I am new here, getting a 350 very soon to compliment my 240z....
as far as nitrous is concerned, when it comes to longetivity, does this stuff effect your engine in the long run in terms of wearing it out?
Also, a mild supercharger, that would be ok, right? when it comes to destroying your motor, it shouldn't right?
Thanks in advance for replying to the noob,
Dog
I am new here, getting a 350 very soon to compliment my 240z....
as far as nitrous is concerned, when it comes to longetivity, does this stuff effect your engine in the long run in terms of wearing it out?
Also, a mild supercharger, that would be ok, right? when it comes to destroying your motor, it shouldn't right?
Thanks in advance for replying to the noob,
Dog
03-03-2004, 10:42 AM
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It's as safe as you make it on both accounts. As for the SPX question pull the fuse to the fuel pump.
I had the same experience with my 50 shot, it was a waste of time barely felt it if at all. I went straight to 75 and then to 105. As for being lean what do your plugs look like?
I had the same experience with my 50 shot, it was a waste of time barely felt it if at all. I went straight to 75 and then to 105. As for being lean what do your plugs look like?
04-19-2004, 09:05 PM
#56
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Uploaded a couple short purge vids on imagestation
http://www.imagestation.com/album/?id=4287683893
Login: zmovies
password: 350z
http://www.imagestation.com/album/?id=4287683893
Login: zmovies
password: 350z
04-20-2004, 07:38 AM
#57
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Originally posted by cyberz350
Gauge READING FULL THROTTLE AIR/FUEL RATIO
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1
Gauge READING FULL THROTTLE AIR/FUEL RATIO
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1
04-20-2004, 08:16 AM
#58
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The "14.6:1" and other numbers are Air/Fuel Ratios. It's what people use to tell whether they are running rich (too much fuel) or running lean (not enough fuel).
04-20-2004, 11:53 AM
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Originally posted by TheBigShow
i know that, man
. i mean the .600, .700, to 1.000.
i know that, man
. i mean the .600, .700, to 1.000.
Voltage A/F gauges like this report those numbers...
http://www.speedshop.org/store/scrip...p?idproduct=15
Peace
-Eric