STOCK MOTOR: Highest Nitrous Shot?
 

I am getting a nitrous kit installed on my car this weekend. WHat do you guys think is the highest I can go on stock motor? It is a direct shot wet kit.

the highest shot is 100-125tops. safest is 100 from everything i have read or seen

You should consider a safe tune when using nitrous as well. I saw that you're thinking about a wet kit which is great, but you still need to verify your A/F is in the safe zone when spraying.

I purchased the most expensive kit with all the goodies that are available. My tuner should be taking care of the rest, I was just wondering whats the most someone has done, safely.

Why not a 300 shot, the motor can handle 600+ hp with twins right?

Thats what I am trying to find out.

Because it's air, which means you will LEAN out your fuel mixture.

BUT I always loved seeing a motor disintegrate with too much N2O!!!

This always comes to mind when people talk about nitrous.

YouTube - 14.6 2.2L Chevy Cobalt + Nitrous EXPLOSION!

Can we keep this on topic please

Which kit did you get and how much did it run you?

nitrious kits look sweet under the hood, not sure if i would feel comfortable using one though. Keep us posted on everything that goes on, i have yet to see a detailed use of nitrous on the forum.

to answer your question I don't think anyone on this forum is successfully running a NO2 kit, I'd start with a 100, 125 at max. I can't wait to see how your project comes out.

Start out with 100HP
 

I'd say anything less than 100HP gain isn't worth the expense and refill costs. I ran nitrous for about five years, but not on a high-compression engine. Common wisdom was that for the 305 V8 engines you could "safely' add 50% (e.g. a 200HP car becomes a 300HP car).

Right... that's why you run a "wet" kit, adding both fuel and nitrous together.

When I ran NOS, I had the kit set up with a fuel pressure sensor and RPM window switch, so if any variable was out of spec, the solenoids wouldn't open (or would close). Worst case scenario with my setup was that I'd run low on N2O (or more commonly, bottle got to cold and pressure would drop), actually making the fuel mixture too RICH.

I'm running a 100 shot.
I would not recommend any more unless you wanna kill your motor/drivetrain.

my tuner is running 560 to the wheels with a turbo.. he says these motor are very strong... you should be safe with 100 shot easy..i think if its tuned right it could handle 200 easily

You guys that keep saying how much HP they have seen the motor handle don't understand the difference. Those statements are just stating the strength of the valve train and components of the motor. With nitrous, they're are other variables other then the number of HP it can handle. As said already, A/F being a big one. Especially with nitrous, when lean it burns VERY hot and can melt holes in pistons. There is a reason piston compositions are built for specific purpose, FI, NITROUS, N/A, etc.

I was on the "pit crew" of a friends 68 vette which had won the previous years "fastest street car" competition our local track had. Vehicles had to be 100% street legal and driven. Well, the next year we/he did a nitrous motor that we literally finished the night before the race and didn't have a chance to tune just right. So, after each pass we would adjust accordingly. Well, after the 4-5th pass, and in semi-finals, we started blowing some pretty good smoke out the exhaust and knew the motor was hurting from going to big on the NO2 nozzles. As an engine builder he didn't care and went out one more time and lost the motor with a heavy shot of juice. After breaking the motor down, we literally melted through the pistons. BTW - He ran low 8's 1/4 mile.

Anyway, I wouldn't do anything too crazy on the stock motor.

UPDATE - Just found a video on youtube of the 'vette. it was a 65 not 68 (been quite a few years) Don't know if this motor was blown or juiced. The car has had both. (This video run was an 8.14)

http://www.youtube.com/watch?v=sCNjPB4wnDg

isnt 1 "shot" equal to ~1 horsepower? so why isnt is sufficient to run say 50-75 shot? a boost of 50-75 would be very noticable and much safer wouldnt it?

^ you are correct, these motors can handle alot.
have had the nx since 1/10.
200 shot will kill the motor, I was gonna do a150 shot when it was explained to me it would be the equivalent of strapping a pipe bomb to the motor.
this was from someone who has 30+ years working with spray.
the only way that would be possible if you had a progressive controller & dual stage set up imo.
very expensive set up for a stand alone & progressive control for the spray.
even then, idk nitrous makes almost all of it's power in torque.

The kit I got is a nitrous express 370z/g37s/gtr kit with progressive control

Do they make a gauge pod for our car?

Maximizer 3 Progressive Nitrous Controller is what I will be using

progressive is the way to go.
I'm gonna upgrade mine to get some better control of my shot.
btw nx kit is excellent,had only a problem with a bottle transducer. Covered under warranty.
post your results, very curious to see your results.
are you going with any kind of stand alone like hks vcon?

I've got the COBB with race tuner software. I should hopefully get the car back tomorrow. I was out of town and just got back

You can safely run 100shot. I would recommend a controller and you'll need 1-2 steps colder plugs. I ran a vq35de with a 100shot for 4yrs without problems. I did bump up to 150 a couple times.

I now have two bottles installed with remote bottle opener. Pix will be posted soon.