Nitrous install help

Cuda

Cuda

EFIng amazing.
Joined
Sep 29, 2008
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:nos: Since I picked some parts up today, I'll more than likely have nitrous on the truck by tomm afternoon.. My question is.. I see a lot of installs pre and post turbo. I was assuming the intake horn was the only spot to install the spray nozzle, but it seems that every install online is just after the air filter. Any advantages / disadvantages on these 2 types? This will never be a huge shot, most would be a 100 shot (about a #50 jet )

On the tuning side, with something real small like a 50 shot or a #30 shot, is it really needed to pull timing? using the smarty n20 timing level? or is the #2 on revo good enough?... it seems to run the best there now.
 
put it after the turbo, ive got mine in the intake horn but have heard from some to put it in the tube coming from intercooler to the intake horn
 
Need to weld a bung in for a tube install right? seems like the piping wouldn't be thick enough for a good drill / tap.
 
Cuda said:
Need to weld a bung in for a tube install right? seems like the piping wouldn't be thick enough for a good drill / tap.
Click to expand...

Alot of guys just drill and tap the tubes.
Problem is it sounds like they start to wobble after awhile.
 
i am going to split my spray.a small shot in the intercooler.and the rest in the intake.when i pound it all in the intake tube [old setup] it sounds like i am dumping gravel into the engine. it doesent put the fire out but it sure sounds bad.if i had the cash i would get a computer to spray it.
 
I have one shot between the 2 turbos and the other shot in the pipe right out of the intercooler on the drivers side! the further away from where it enters the head, the better "mix" you get
 
so then how effective are the zz style spray bars you put in the intake???
 
Putting it before the intercooler helps to further cool the air going through the intercooler as well and like Bjans said it gets a better mix.
 
Nitrous "helps" an engine in two different ways.

First is the cooling of the intake charge. When nitrous changes "state", going from a liquid to a gas, it absorbs a large quanity of energy, in the form of heat. This is true of any compound, but nitrous does the change of state at a relatively low temp. The cooling effect creates a denser air charge, which allows more fuel to be burned with the same volume of air.

Second, nitrous is made up of approximately 33% oxygen, compared to air which is made up of 21% oxygen. By volumn if you replaced the air with nitrous you would end up with 12% more oxygen. The trick here is that unlike air, which has "free" oxygen (not combined with another element), nitrous is combined with nitrogen. In order for the oxygen in nitrous to be used it must be separated from the nitrogen. The oxygen separates at about 570* F. The separation won't usually happen in the intake manifold, but does happen during the combustion process.

One last thing... On a diesel engine, a condition can exist that creates what we call a nitrous explosion. The nitrous isn't actually exploding (nitrous itself doesn't burn), but fuel can ignite after it leaves the combustion chamber. What can happen is if we inject enough nitrous, that most or all of the air is replace with nitrous during a power stroke, the 570* won't be generated to make the nitrogen and oxygen separate. Once the exhaust valve opens and the fuel and nitrous mix gets pushed out into the exhaust system, enough heat from other cylinders exhaust will cause the nitrous to separate, and now you have plenty of oxygen and fuel to burn. A big bang (usually in the exhaust system or turbo), will result.

Paul
 
kipo, i will get back to you on the zz style spray bar.i am almost finished with it.
 
I guess I'll wait till Sunday.. See if I can use my neigbors TIG to install the bung. Any tuning advice for the shot?
 
i have heard spraying nitrous before the intercooler actually detracts from the cooling effect of the IC ...if the air is already cool, then adding nos helps even more, but cooling before entering the ic you lose its primary purpose, along with a tremendous amount of dissipation over the length traveled before entering the engine. i have done it both ways, and the best power and cooling effect i have seen is from both nozzles after the ic ...
 
BIGRPOWR said:
i have heard spraying nitrous before the intercooler actually detracts from the cooling effect of the IC ...if the air is already cool, then adding nos helps even more, but cooling before entering the ic you lose its primary purpose, along with a tremendous amount of dissipation over the length traveled before entering the engine. i have done it both ways, and the best power and cooling effect i have seen is from both nozzles after the ic ...
Click to expand...

Yup.. I decided to put mine right after the intercooler.
 
cuda, start with a small jet. .30 may be good to start with.when i set mine in the tube it was 6 inches away from the boot that the intake horns on.thats just what worked for me.
 
You guys running a nozzle between turbos, you don't worry about spraying nitrous directly into the turbo wheel that close. Seems there would be some danger of causing premature wear/corosion/something.

I plumbed into the hot side intercooler pipe thinking that that will help cool all air going into the intake. I don't have a high horse power setup, for me it was cheaper to add a turbo in a bottle than twins. Plus with the progressive controller have a lot of control and can tune to match what I have.

Seems a LITTLE SAFER adding it to hot side pipe than directly into the intake. But I really have not been able to play with mine yet.
 
I have just been told by lots of guys running nitrous to put it before the intercooler. That way works pretty good for me so i'll leave it there until I put my second stage on which will go into the intake horn. I'm sure both ways will work just fine. Good luck to ya and start small before you throw that big jet in.
 
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