so ive been being told by so many people now that from running nitrous on my motor im melting or messing up my piston rings on my car. i dont know whether to believe cause on the flip side i hear that if its setup properly the car will be fine. i know my transmission will eventually go but thats ok with me im just worried about the motor like people say. thing only has 50k miles on it. so if anyone can help please

 

Nitrous gets a bad name because it is cheap and easy to install. This allows idiots to install and use it. As with any power-adder if used wrong you will break stuff, if used properly it will never harm a thing.

 

The ONLY way you can ruin a piston on nitrous is to run lean. The only other way you could kill a motor on nitrous would be to flat out just make to much horsepower for the internals. That isn't going to happen if you have a good fuel pump in the car and are jetted right. Tell everyone that keeps saying that that they're exactly right and you're just that crazy so they won't catch on and throw a kit on there car. With spray you just need to be a little extra careful about the condition of 1. Fuel pump 2. Fuel filter 3. Ignition system (cap, rotor, wires, plugs). I've done or seen done about everything "wrong" with nitrous including the original jetting you had on your car and have yet to see a piston melt or a ring land blow out. The worst thing I've seen on spray was with an old circle track engine 350 (had 2.02 1.6 valve heads on one side 1.94 1.50 heads on the other of different castings) They were spraying a 300hp shot to this engine and went through several bottles before it lifted a head gasket and started leaking oil. After this the owner of the truck sprayed it WHILE STAGING in the hopes of blowing it up and got his wish when a piston cracked from flat out to much pressure/lack of oil. This was all on stock internals and FAR beyond what is considered safe. When the engine was torn down guess what... not one melted piston or ring, or burnt valve; just a crack in the culprit piston.

 

i never believed those people when they said it they say so hows those piston rings of yours doing with that nitrous sarcastically of course and i reply just fine. thats good to know though now i dont feel guilty running a 130 on my LO3 im gonna dyno it come spring time to maximize what shot i can run on it.

 

Sprayed a 200 NOS kit on a 91 LO3 for 1 year before the fuel pump went south, no melted pistons, but the right excuse to install a 350.

 

The worst thing i've seen from nitrous was the intake of a mustang blow on startup....

 

200 on an L03? Were you feeding it race gas when you sprayed, just to be curious.

 

so how exactly did your fuel pump die with a 200 shot because either you were running it super lean from a stocker or you got a crappy walbro 255 and it died on you very fast?

 

i've sprayed nitrous on just about ever car i've owned, the only problem i ever had was i had a puddling issue causing a backfire due to a bad nozzle location in the air intake tube which just fried the maf, the car still ran fine, i've probably put a good 100 bottles of nitrous through 4 different cars, and never had any "major" problems. if ran the correct way with all the safety precautions, you wont either.

 

As long as your tune is set up right and it does'nt run lean and does'nt detionate you should be fine.

 

i've seen a whole corvette front end blowup.. about 40ft of flames and a shockwave felt over 1/8th mile away.. i was a little past half track and he was about 100ft away from the starting line, still in the staging lanes.. old nitrous solenoids let nitrous leak into the manifold and BOOOMMMM on startup..

 

Nirtrous is safe as long as you are careful with the gas you will be ok. People are their own enemy when it comes to nitrous. Ijust took out a 355 vortec headed small block, stock rods and crank forged pistons, and a custom ground mechanical cam i had im my car for 2 1/2 years and drove it every friday and saturday night and no issues. it had 200 hp kit and ran 10.50@ 128 all day.

 

you have seen fast and furious 1... NOS!!... be serious.

 

DAMN!
The one i was referring to was caused by a wiring short from cheap solenoids, it was at NTI and i heard the pop over the sound of an NASCAR engine at full rev on the engine dyno while in the engine dyno room.

 

Hey stiletto check your pm's.

 

so will nos be as reliable with a mostly stock 350? if you don't have forged pistons/connecting rods/crank? what would be the highest hp shot of nawz you would run on a stock lower end?

 

after 150 your looking for trouble with non-forged bottom end. i mean more has and can be done but for how long? i dont think i could keep spraying into a stock bottom end and wondering when its going to blow.

 

right now i have a 125 hp shot about to go into my stock lower end 350. just wondering if when it goes off. i should wait for a loud boom.

 

Nitrous is a power adder the same as a blower or a turbo. They all provide an artificial amount of air/oxygen in the cylinders to allow you to burn more fuel. The more fuel you can burn at the same air/fuel ratio, the more power you can make.

As with any power adder, too much on an unprepared engine will break parts. Normal faults with NOS is already mentioned above. Running lean will do a lot of damage. Since NOS introduces an oxygen rich atmosphere into the cylinders, it also needs a lot more fuel to keep from going lean. NOS is designed to only operate at WOT. When people fail to install a WOT switch and think they can use NOS at part throttle are only asking for engine damage. Plugged/dirty fuel nozzles, faulty fuel solenoids or wiring can easily create a lean condition. Blowers and turbos can adjust fuel requirements by boost levels. You can't do that with NOS so you need to rely on the components to work properly or major failures will happen.

A typical good V8 can easily handle up to an extra 150 hp of any power adder. A high mileage engine shouldn't get a big shot and going above that, you should consider building an engine with a bunch or forged parts inside it.

 

so a .067 jet is a what for a shot ive been told 150 but im reading its a 175 off a calculator.