Nos Kits

[noely1]

Hey guys im not sure if im in the right section but here goes my question;

My mate has an R34 NON TURBO same as me and he got some quotes on a NOS kit installation and setup... he wanted me to ask a few questions on his behalf as he doenst have access to a computer at the moment

1- worth it?? Turbo is out of the question its either NOS or nothing...

2- risks involved?? other than the obvious illegalities.

3- what sort of improvments can he expect??

4- what sort of engine difficulties can he incur using nos on a non turbo engine with stock internals??

and yeah thats about it... any other people's 2c would be greatly appreciated!

cheers

[PM-R33]

1- worth it?? Turbo is out of the question its either NOS or nothing...

Bang for buck nothing comes close. If you can do all the installation your self the overall costs would be around the $1000-$1500 mark depending on what extra's you get and how cheap you can get a kit. Also very easy to uninstall and sell later down the track so you don't loose that much money as compared to other mods.

2- risks involved?? other than the obvious illegalities.

If you don't know much about nitrous and how it works than that is the main danger. Most engine failures from NOS usage can be prevented and are usually just human mistakes. This is where the whole reputation comes from.

3- what sort of improvments can he expect??

Obviously comes down to the jets he uses. A wet kit normally comes with jetting for 50HP-150HP. On a NA skyline start at something around a 75HP shot and see how it goes. 100HP shot shouldn't be a problem.

4- what sort of engine difficulties can he incur using nos on a non turbo engine with stock internals??

As long as it is setup fine and doesn't fail in anyway there shouldn't be any problems with the car.

Main thing i would recommend for the car is to get a NOS RPM controller. They are fairly cheap and you can set a WOT activation through it and an activation RPM and a de-activation RPM.

Main failures from NOS use is setting the NOS to early in the RPM range, hitting limiter with the NOS activated, not having a WOT when engaging it and a fuel failure (or inadequate fuel supply) causing pure NOS to be squirted in melting everything. Therefore the other thing i would look at upgrading is the fuel pump (im not sure how good the stock NA fuel system is honestly, maybe even an injector upgrade might be necessary). You can also get a fuel sender unit shut down system for the fuel solenoid so if it detects a fuel failure it deactivates the NOS solenoid to precent engine damage. Also would recommend a purge kit.

Goodluck.

Edited March 17, 2010 by PM-R33

[Swiper the Fox]

here's a kit that is less than 1/2 price with all the right bits.

http://www.skylinesaustralia.com/forums/Ge...51#entry5139051

[PM-R33]

Yep Pauls kit is a great price, definetely would go for it.

[mad082]

don't forget to reinforce the manifold and make sure the floor on the passengers side is bolted in properly. LOL

seriously though, while NOS is a good bang for buck mod, it isn't that great for long use. it isn't like other mods where the power will be there all the time and is easily accessed by your right foot. NOS is a case of being there when you press the button, as long as the last time you pressed the button didn't use up the last of what was in the tank.

[Birds]

I thought when most modern nitrous kits were armed they ran off the accelerator pedal rather than the push of a button for the "instant warp into superspeed" effect.

I believe this is the picture required:

[DC33VN]

L0LLLLLL!

[PM-R33]

I thought when most modern nitrous kits were armed they ran off the accelerator pedal rather than the push of a button for the "instant warp into superspeed" effect.

Yep hence the WOT switch as i mentioned. Having an actual "push button" while being some what cool, definetely isn't the safest option. Too many things can go wrong. Best way is to have a main arming switch (or two) and then having it set to WOT.

[PM-R33]

seriously though, while NOS is a good bang for buck mod, it isn't that great for long use. it isn't like other mods where the power will be there all the time and is easily accessed by your right foot. NOS is a case of being there when you press the button, as long as the last time you pressed the button didn't use up the last of what was in the tank.

In a way thats the good thing about it. It's something that when isn't in use doesn't have any negative effects on the car what so ever. It is only there if you need it to be. Obviously if your car is slow and you want it to be fast something like this isn't a great mod since your going to be using it all the time. But if you allready have a fairly fast car to begin with, and want something that little bit extra to have a bit of fun every now and then it's a great thing to have.

[noely1]

the guy that my mate was talking to said it would be dyno tuned etc and it would only cut in when the pedal is flat to the floor and that he could bring back the limiter and stuff like that so he doesnt red line the motor while the NOS is activated, whilst also having a button to press when you want to arm it and disarm it.. so you could hav it disarmed and floor it and the nos wont cut in unless you have pressed the armed button.

the kit was rated for 75 - 250 hp shot but the guy said would probably start off with 75 and if the car handles it well can be tuned up to 100 shot.

the price for the kit wa $1100 and install depended on how much he wanted it hidden etc but as a general rule he said 500 - 600 bucks for install.. but more if he wanted to hide the bottle etc.

Also anyone know as a general guide how long these last STREET AND TRACK use (as different measures) without being to 'button happy' on the streets how long should it last my mate?

will there be any way to tell that the car is NOS powered from the outside EG; the car's not gonna blow some massive need for speed flame out the back of the exhaust?? (bit dramatic but you get the idea..) like no smoke or anything when the nos cuts in?

he is really cautious aobout this and he does hav a reasonably fast car but its pretty much stock and it will mainly be used for just qtr miles etc with the occasional squirt on teh streets i spose no one can say they wont - when we all know they will -

[PM-R33]

If you hide it well enough it is virtually undetectable if you are smart about a few things.

When the NOS is activated you may see some extra black smoke from the exhaust thats about it. If the exhaust pipe is nice and hot it may shoot some flames aswell if the mixture is a bit rich.

Rough math for nitrous usage. 1lb @ 100HP is a bit over 10 seconds of use. So a 10lb bottle at 100HP shot will give you nearly 2 minutes worth of use. However as the bottle gets empty the pressure off the bottle will drop and it wont be as big of a hit, this is where a bottle heater comes in handy.

Edited March 18, 2010 by PM-R33

[WHITER33GTS-T]

My 100hp shot is run thru Haltech and comes on at 4000rpm WOT and turns off at 17psi. I only have it to help get the turbo onto boost. But have never used it. Was only tested on the dyno.

[noely1]

alrighty cool thanks guys. im pretty new to all this stuff what does this WOT mean? haha sorry.. is this the toggle switch??

i think thats about all the questions he wanted answers for... but if there are anymore ill keep asking.

cheers for all the help and info guys!

[PM-R33]

Wide Open Throttle

[MiZ_SXy_180]

WOT... Wide Open Throttle when your foot is on the floor and throttle is at 100%

[bozodos]

don't bother unless you're taking it to the drag strip, refills are expensive, it's f**king illegal, and unless the rest of the motor is upgraded to suit such an instant power increase you'll likely start breaking things.

[noely1]

oh ok haha cheers!!

and i was under the impression that usually things go breaking if the user doesnt understand when/how to use the NOS properly... as in kicking it in to early in the rev range and then taking it all the way to redline and beyond will obviously be stupid and harmful... but i thought if you did it say 4000rpm for a few seconds to say 6000rpm (just for arguments sake) i thought this wouldnt be so harmful?

[BezerkR32]

there are also things that are out of your control, solenoids sometimes sieze up, the nitrous solenoid can freeze if bottle pressure is too high, poor fuel quality causing detonation, etc. you must have alot of faith in the installer and tuner, in saying that i have seen guys fit there own kits, have no guages for gas pressure and fuel pressure reference and still have no issue, mind you the cars werent neer there full potential.

this system is for motorsport use only in a conrolled environment. not recommended for street use. it makes cars fairly angry.

Also ends up expensive as a 10lb bottle costs $120 to fill. thats a dollar a second.

oh ok haha cheers!!

and i was under the impression that usually things go breaking if the user doesnt understand when/how to use the NOS properly... as in kicking it in to early in the rev range and then taking it all the way to redline and beyond will obviously be stupid and harmful... but i thought if you did it say 4000rpm for a few seconds to say 6000rpm (just for arguments sake) i thought this wouldnt be so harmful?

[XRATED]

Tell your "buddy" to have a look at http://forum.nitrous-advice.org/index.php .

All the info you need is there...

Personally I would never run anything but - http://www.noswizard.com/ - products.

N2O is an oxidiser... it's like injecting highly compressed "super" oxygen into your engine. Obviously if you add more oxygen, you need to add more fuel to maintain an acceptable air/fuel ratio. Unless you have a programable computer, you must use a "wet" nitrous kit. A "wet" nitrous kit adds fuel as well as nitrous, where a "dry" nitrous kit only injects nitrous.

Nitrous wont work consistantly if it's not set up correctly.

If it is... it can work fantastically!!!

[PM-R33]

Honestly if he wants to do it, do it. Just make sure you do enough research and understand everything. Don't listen to people that have never had any experience with it and are just saying what they have heard from a friends, counsins brother. Nitrous is one of the most missunderstood modifications and it's mainly human choices and errors that give it such a bad name. (And Fast and Furious )

Edited March 20, 2010 by PM-R33