want advice on running nos on a carbi V8, a friend of mine is thinking about a 25hp shot. Not for preformance but when it starts to "lean out" on angles.


an advive or experiance.




NICK

If your running lean and you ad NOS to the mix, That will :nuke: your engine. NOS needs a fat air/fuel ratio to keep from melting down the engine!

that was my arguement, nos wont burn. It needs the fuel to get the power and if there is no fuel then on power, make sense :D :D

He seems to think, after talking to the guys at OZNOZ, australian dealer for nos that it will work kickass, im still not to sure about the whole deal but and would tend to think that it is worse and the 700 bucks is better spent on LPG injection.


NICK

Take a look at the NOS wiring diagram. There is a fuel solenoid as well as a Nos solenoid. The fuel solenoid adds fuel as the nos is feed. The system trips with a micro switch when your at full throttle only. There is a safety for when there is no fuel pressure to prevent melt downs.

ummm... Old Scout that looks to me like its a fuel pressure saftey switch. all that does is turn off the NOS if there is not enough fuel pressure. I saw no Fuel Seloniod in there, Maybe I'm just blind. NOS breaks down with the engine temprature converting into guess what Nitrogen and Oxygen. if the Fuel Air ratio is too lean then the Fuel will burn really fast and really hot doing things like burning holes in pistons. if your friend is leaning out on angles then he will destroy his engine if he uses NOS. If he is gonna spend $700 for a 25 shot of NOS just to use for "angles" then his money would be much better spend on a Q-jet and getting the Q-jet tuned (assuming he's using a V-8) or even cough up a few bones more and get a fuel injection system. Now with fuel injection most systems can handle a 75hp shot (or higher) of NOS without harming the engine. Venom Injection makes a great system that shuts of the NOS if the engine starts to run too lean. This can be done with other systems as well Though the install is a bit more complicated.

Your only talking a 25 horse power kit, you would not lean out a motor under normal circumstances.

You can get away with a 50 HP kit with a stock engine with no more fuel, (Carby anyway )

But in this case your already lean out before you start. A LPG conversion would solve the problem and be cheaper than going to a Holley pro injection.

We used to run a 3 stage fogger Nitros system on our drag car, first stage was 100 HP with no extra fuel, 2 and 3 were dumped with fuel from a set of BG fuel pumps.


Rhino

Originally posted by DEnd
ummm... Old Scout that looks to me like its a fuel pressure saftey switch. all that does is turn off the NOS if there is not enough fuel pressure. I saw no Fuel Seloniod in there, Maybe I'm just blind. NOS breaks down with the engine temprature converting into guess what Nitrogen and Oxygen. if the Fuel Air ratio is too lean then the Fuel will burn really fast and really hot doing things like burning holes in pistons. if your friend is leaning out on angles then he will destroy his engine if he uses NOS. If he is gonna spend $700 for a 25 shot of NOS just to use for "angles" then his money would be much better spend on a Q-jet and getting the Q-jet tuned (assuming he's using a V-8) or even cough up a few bones more and get a fuel injection system. Now with fuel injection most systems can handle a 75hp shot (or higher) of NOS without harming the engine. Venom Injection makes a great system that shuts of the NOS if the engine starts to run too lean. This can be done with other systems as well Though the install is a bit more complicated.

Better get some glasses bud :D :D Take a look again, Solenoid number 1 controls the fuel delivery while solenoid number 2 controls NOS delivery. Solenoid number 2 has the fuel pressure switch on it so that if theres inadequate fuel pressure to keep things rich it'll shut off the NOS.. The fuel solenoid would still be open but the NOS would be shut off under low fuel pressure settings.

I think this is a serious band aid fix but if this is what he's gotta do then i'd suggest running an excessively big fuel jet to compensate for the lack of fuel that the carb may be giving.. To much fuel and not enough NOS will only make for a smaller HP gain while to much NOS and not enough fuel makes for :nuke: :nuke: :nuke:

Originally posted by ToyDozer


Better get some glasses bud :D :D Take a look again, Solenoid number 1 controls the fuel delivery while solenoid number 2 controls NOS delivery. Solenoid number 2 has the fuel pressure switch on it so that if theres inadequate fuel pressure to keep things rich it'll shut off the NOS.. The fuel solenoid would still be open but the NOS would be shut off under low fuel pressure settings.


Thanks Toy Dozer for covering my back!


De END wake up!:flipoff2:

Very good info about NOS you guys are all dead on-
But i have to say that using NOS to correct a sidehilling issue is a COMPLETE WASTE OF TIME!

It only kicks in when you FLOOR IT!, so if you're on a sidehaill in a precarious position, you don't want to be full throttle. Get a better carb. or get fuel injection, or convert it to propane, but using NOS is for hill-climbs, or mud-running, not sidehills.

Theres never a shortage of whining on this bbs, but its this kind of AWESOME info that keeps me addicted to POR! .....let's see...just happen to have the diagram right here...GO Old Scout!!!!!

I've searched and found. I was wondering about response time of the System. I have a stock 22r w/cam and race obstacle courses. I still use my stock gearing with welded rear and 35's.( I haven't busted anything yet but I'm tryin) I like this gear setup for what I do but I lack a little power just in one spot on the hardest section. You can't get a run for the hill. It's around a sharp turn then up. I could use it other places too. Is there any problem with using it in this application. The courses are very rough will this affect the system any? Oh I just want to use the plate system.

i am running a 100hp NOS setup. works great and is a blast.

i am no expert but my advise is to only install a system on an engine that is functioning and performs normally. it will only make a small problem bigger. sort out your issues and then add some squeze for additional HP.

Thanks camo. My engine is running good, no problems. I'm just a little short on power in some spots. I have to slip the clutch more than I like. I have taken a lot of weight off since the last race but I want to go prepared this time. I think I can take it with this set up. Athough I just took my springs off and found that the two of the leafs on the front are bent. I knew it was a rough one but these are only a year old.

try giving this place a call www.nitrousexpress.com They are probably the best Nitrous company out, and they are in my hometown:flipoff2: . Seriosly, I know most of the guys there, and they have some bad shiat. Give em a call! See if you can talk to a guy named Jeremy, tell him I(Ricky Garza) sent you. Good luck.

try giving this place a call www.nitrousexpress.com They are probably the best Nitrous company out, and they are in my hometown . Seriosly, I know most of the guys there, and they have some bad shiat. Give em a call! See if you can talk to a guy named Jeremy, tell him I(Ricky Garza) sent you. Good luck.

Thanks for the link. I was just going to ask for the same. I checked it out. I will be calling them.

Originally posted by Old Scout
Thanks Toy Dozer for covering my back!


De END wake up!:flipoff2:

That wiring diagram is for a fuel injected NOS system. That exact print comes with the LS1 kit I put on a buddies Firebird. I'm not sure, but I don't think the carb plate systems come with a switch like that. And even it it did there would be fuel pressure in the line going to the carb, but the floats would be dry not giving any fuel to the motor.

And yes Camo does have NOS. The question is, does he put it in the motor or does HE inhale it? :flipoff2: