Got a nitrous system on my car, only sprayed three times. Being a daily, id hate to blow the motor. Is there any bonus advice to more properly spray nitrous ? I feel other than pulling timing, jetting up on fuel may help ?

When running nitrous, what cause pistons to shatter ? I have read something about the piston rings getting too hot and expanding which causes some... not good things...

Also I have a wet fogger in the intake elbow, spraying into the throttle blades. I wonder if that may do anything to cool down the intake temperatures.

Thanks !

 

Run colder plugs.
Most here run NGK BR7EF plugs , I believe its part number 4126.
Always use premium fuel,
You dont have to worry about ring gaps unless your running larger shots, like 200 or more.
What happens is the heat will cause the rings to expand, closing the gap and then they will buckle and pretty much ruin your engine.
Nitrous is totally safe when used correctly.
I have been using it for about 15 years now.

 

Just make sure you have a good fuel supply to your nitrous system . Most guys run into trouble when the engine goes lean because of a lack of fuel. .

 

Man with nitrous, it’s defiantly a fun thing to feel the hit when flooring it, then, hitting the switch.

I could try running without nos and watch my fuel pressure. Now if it’s not enough, should the fuel psi start to drop after a certain rpm or speed or both ?

Could I run a methanol sprayer on top of the fuel and nos fogger ?

Thanks !

 

Would colder plugs affect anything or would I be able to add anything such as more timing ? I am at 37 so far.

ha yea I really feel nitrous isn’t as crazy as people say, it’s just more air.

Thanks for that part number.

 

Just remember to much air and not enough gas turns aluminum into a liquid

 

NGK BR7s is 3346.

 

Rich isn't safe, despite what the internet says.

If it's rich and you get a little to aggressive on the timing, all the fuel turns into a blow torch. If it's where it needs to be or a little lean you'll start nipping plugs.

Run whatever Lambda on the spray as you do NA.

Learn how to read plugs.

Nitrous doesn't kill engines. People do.

 

37?!!!! as in degrees of timing or jet size

 

See I figured if you go too rich you will end up just damaging the engine in other ways. I am hopping that by jetting up a little bit, Itll just ensure enough fuel gets to each cylinder since it is a fogger at a throttle body.

Also yea, trying to keep this one alive ha.

 

Haha my bad, to be more clear, I am running 37 degrees at wot, when not spraying nos.

 

I knew I loved you for a reason lol ..

But yes, tune the car's afr on nitrous, the same as it is on motor alone. All you are doing is tuning an all motor car when it comes down to it.

Extra lean and no timing is safer than extra rich and too much or too little timing. Too much fuel will get under the rings and lift them. Proper technique would be to read the plugs, but if you want to stick with the afr gauge, then pull extra timing out to begin with, focus on the fuel jet and give the motor the same wot afr as motor. Once completed, then creep the timing in till it likes it. It would be beneficial to learn how to read a plug as you will most likely find a cylinder or two that don't care for the timing you are putting in it. Problem is, the ls engines don't have individual cylinder timing tunability. So be mindful of that.

 

Christ son! Why?

 

I feel I know enough to read plugs to get a general idea. I still have the original spark plugs as sort of a base reference to go off of; those were taken out before I had done anything to the car. I would like to get an AFR gauge for the tuning, even for daily adjustments and being able to dial in the nitrous, but more importantly, it would look pretty cool. Already have a fuel pressure gauge on the hood. Is there a few ways I can tell when the engine is most happy with timing and afr ? I had also thing I read that 12.5 afr is the best for wot. Is that true ?

Thanks !

 

For more power of course !

 

I wanna see pictures after the first hit.🤣

 

I have done three hits on what ever the stock timing was. I run 37 degrees normally without nos. I’d like to start at 30 and work up from there to see what’s good.

never liked the, just pull 2 degrees per 50 or 100

 

Will you define nipping plugs please?

 

Eating the strap off of them. Usually when there's too much timing, too rich, or you hang it on the limiter for a bit it'll eat the straps. That's why it's best to use ngk plugs as the plug acts more like a fuse and it will be sacrificed instead of the piston or valves.

 

Typically its when there is too much timing. When you are reading the plugs for timing, you are looking at the strap for a heat line. The heat starts at the end of the strap and works it's way towards the bend and towards the threads.

when it gets really hot, it will start to melt the electrode starting at the tip.

personally I like NGK plugs because in my experience, they are easy to read compared to other brands.

reading plugs is the best way to know how close to the edge you are because it tells you what is going on in that one particular cylinder. Timing wise and Lambda.

Each cylinder is going to be a little different, mostly due to the intake. There will always be one or a few cylinders that are hotter than the rest. Once you figure out what those are, tune off those. Because if you tune it where those are safe, every other cylinder is definitely going to be safe.

that's where aftermarket ECU's with individual cylinder control are great. You will make more power and do it safer.