Competition water injection and nitrous

[JFry]

just wandering if both could be ran together. and if not wich is the better choice. thanks for any help. my truck o2 2500 6 speed pdr street twins sbc double disk head o ringed and studded 150 hp injecters 5 inch stacks edge drag comp fass fuel system all half inch lines locker in rear diff

 

[KLockliear]

Can you run them together, sure, but why... just run the nitrous.

 

[BigBadDodge]

If you run the water upstream of the nitrous you might be making ice cubes



BBD

 

[COMP461]

Water / methanol injection , and nitrous both have advantages , and have a place in diesel power



1st nitrous is one of the best power adders around , if you follow certain parameters. Nitrous is over 100 degrees below zero when it comes out of the nozzle. the theory of latent heat of vaporization is part of the power gain. This is basically when Nitrous is injected in to the intake track , it boils at over minus 100 degrees, it absorbs the heat and makes the intake air charge denser. This is the reason most maximum effort diesels don’t run a intercooler . Secondly Nitrous chemical composition is 37% oxygen when it reaches combustion temperature in the combustion chamber it separates in to oxygen and nitrogen. The extra oxygen combines with fuel and makes power. You can put all the nitrous in the motor you want , and it will only make power if the fuel is available to combine with it . one of the dangers is if you out run your turbo’s capacity to bypass extra exhaust gasses through the wastegate , you can over speed your turbo’s wheel, and catastrophic turbo and engine damage will result. For small amount of nitrous you will be fire , some of the new progressive NX variable controllers combined with a good hobb’s switch will make for a smooth strong system.



One thing you will run in to in nitrous is if you bring on the system to soon or too low a boost , it will put out the fire in the diesel , by making the intake temp too cold to run. This will be a little scary , as the engine will go dead , or some times bark back, just raise the hobb’s switch level a little.



Water / Methanol this is used to make power in a different way , the water will act as a cooling effect in the intake charge and will give it a kick on expansion in the combustion chamber , but if best effect is to aid in lowering EGT’s the methanol is use in a different way. First methanol is a fuel , but that is not its biggest power generation ability , its is the fact that it speeds up flame front propagation , this has the effect of fooling the motor in to believing it has more timing . this is most advantageous on fixed timing trucks IE

P-Pump Cummins this too works good with NX new progressive controller

 

[RCenters]

i melted 4 pistons and a valve dunno what done it butt iv been usen NOS then the day i added water/meth it cooked

 

[24VChev]

I run both on my little race truck and they work extreamly well together. I run the meth all the time then for a little kick hit the Nos.



Malcolm

 

[LEnglish]

I think meth and N2O is playing with fire. On my turck I run 100% pure meth and can run till the truck spdders out on it, But on my 6. 5 with just 20% meth (washer fluid) you would get a bad preignition. I feel the 6. 5 with higher comp and no IC it would just make the meth preingnit. I feel on my turck now with the 12V I have lower comp and only 35 psi I just don't have the conditions to make it preingnite yet.



Soon as you get N2O in there you will alow it to preingnite much easer. Our motors are strong enough to take some extream abuse but no reason to put it there.



If I were to run N2O I would try just more fuel and N2O. If you have a good ear you can take it till it rattles with the meth and back it off.



If you are runing meth now I would leave it off feed the N2O in and start with a low amount of meth and move up slowly.



Rember if you start to change N2O jeting higer you will want to back the meth off and slowly come back in with it .

 

[Morse]

Some of this scares me. . I haven't ran my set up yet. . I'm waiting on my Poole twins kit to come in. . I have a nitrous fogger system, plumbed directly over each intake valve. It also has a progressive controller. I just purchased a two stage water meth kit as well. If I only go with a small amount of water, do you feel it will take it. . I'll be dumping a very large amount of nitrous.

 

[COMP461]

This is more of misunderstanding what Nitrous dose , in a diesel nitrous is nothing more then air , and cooling the intake charger. If you motor can safely take a second turbo, or more boost , it can be accomplished even safer take nitrous , it will not detonate. Nitrous will even lower you egt’s . I have done extensive dyno research with NX and together we have seen it all. The safest thing you can put on a diesel motor is nitrous. Keep in mind you must residual fuel not burned to have the nitrous make additional power. As in injectors or fueling boxes. In a simple term if you have smoke you can make power with nitrous. Now if you Jim Fulmer and on the edge with power , and just using him as a example of a non nitrous truck , and you hit the squeeze , you would get big power gains , but you could then make more power then the engine could contain.



Now methanol , 100% your living on the edge , it is a good tuning aid with a very small amount , and I mean small on a fixed timing truck, IE P-Pump , this make the truck want less timing to achieve the maximum peak cylinder pressure at the proper time after TDC. This is like having a timing advance , and is useful on the first part of the track where you can get away with more timing as the motor is chasing the track, but on the big end where the motor is laying flat , it could spell disaster if you aren’t careful.



I would never recommend running 100% on any thing on the street,

 

[BigBadDodge]

I have been runing a 50/50 mix of water meth for the past two years with no issues. Like metioned and IMO, you need the extra fuel and boost to do it correctly my timming is also pretty far advanced though as well. I am now using two Snow Performance stage two kits with two pumps two controllers etc... and 4ea 625ml nozzels two in the intake horn and two in the manifild



Controllers stacked:

#ad




Nozzels in the manifold:

#ad




BBD

 

[LEnglish]

On my set up I need more air. I run 2 M15 (625) jets now at 70-80psi that comes on at 30lbs. If I run my plate more forward I can run the pump up to 110psi but the EGT's are not want I want. If I run more water It will make it spudder out easer and not make the power of the meth . I hope onece I get a bigger turbo I can make alot more power with more fuel and water/meth.



Once I get more air I will move the mix to 50/50. At the moment I make a 100hp and 170tq extra with just he meth. The more water I run the less power it makes. I want to keep the same amount of meth but get water in there for the EGT's. To do this I will need more air. Hope to get my 160pump over 500hp.



Like the other guy said you can feed as much N2O in as you like and it only makes your tune safer. It just when you add a fuel in with it like meth or propane that you need to be on the ball.