Longterm review: NOS

Django

Django

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Every now and again, my curiousity gets the better of me on the subject of NOS.

I'd like some opions and reviews as to the longterm affects of NO2 from anyone with forced induction and a stock bottom end......

Is the bottle still considered a NO-NO when used in conjuction with forced induction...?

Seems to me that all the brainiacs were predicting disastrous results.... I know that a number of guys running NO2 have gone kablooey... But I'm curious as to whather or not it was due to too big a shot of juice or whether FI and juice simply don't mix on a stock lower end....

Is a 50 shot still too hot....
When a Paxton blower is what I've got..?

Thanks, guys 'n' girls....

Django
 
This guy here, locally has a Sprayed/Roe SC 96 GTS. Supposedly a stock bottom end, stock long block at that. He's running meth injection also. I have no clue what shot he runs, I've never heard him disclose it.

Here's a vid of the car: http://videos.streetfire.net/search/sc+viper/0/a41e5cd7-e020-4a06-ab18-a1e306fcad75.htm

(Please, lets call it nitrous from now on or even NO2. NOS® is a brand name and reminds me of ricers in a bad way! :D)
 
Roz-SRT said:
This guy here, locally has a Sprayed/Roe SC 96 GTS. Supposedly a stock bottom end, stock long block at that. He's running meth injection also. I have no clue what shot he runs, I've never heard him disclose it.

Here's a vid of the car: http://videos.streetfire.net/search/sc+viper/0/a41e5cd7-e020-4a06-ab18-a1e306fcad75.htm

(Please, lets call it nitrous from now on or even NO2. NOS® is a brand name and reminds me of ricers in a bad way! :D)
Click to expand...
your wish is our comand.:p :p :p :rock:
 
This car has been run hard, its broken a few output shafts, other than that, thats all I know about. No internal damge at all.

He posts on the Alley alot, I bet Stinker knows him.
 
Prof said:
Bone will be the big test...as soon as he gets back!
Click to expand...

Sort of. Internals aren't stock. :p :)
 
Well Tim, let me see if I can help out a little.

I'm going to start with a non-boosted engine and then just explain the difference in your situation.

When you inject Nitrous (better Roz?:dontknow: ;) :D ) it has no affect on the cylinder pressures during the intake stroke. All it is doing is adding more oxygen and fuel, which is basically what a FI system does.

However, it greatly increases the cylinder pressure during combustion and the power stroke as it is burning that extra oxygen/fuel mixture. This is the increased stress that the engine components are subjected to. Make sense so far?

Okay, now with a Paxton system such as yours you are also increasing the cylinder pressure during the compression stroke as you have forced more air/fuel mixture into the cylinder. This also increases the cylinder pressure during combustion and the power stroke as it is burning that extra air/fuel mixture. So what happens in the FI engine is a combination of a FI and NA engine. The cylinder pressure is the same on the compression stroke, but the cylinder pressure during combustion and the power stroke is a combination of the extra air/fuel mixture from the FI system and the oxygen/fuel from the Nitrous system.

Does that help?:confused: :dontknow:

I really tried to dumb this down so that even Mikey could understand it if he stops by this thread.;) :p :D
 
Silverback said:
Well Tim, let me see if I can help out a little.

I'm going to start with a non-boosted engine and then just explain the difference in your situation.

When you inject Nitrous (better Roz?:dontknow: ;) :D ) it has no affect on the cylinder pressures during the intake stroke. All it is doing is adding more oxygen and fuel, which is basically what a FI system does.

However, it greatly increases the cylinder pressure during combustion and the power stroke as it is burning that extra oxygen/fuel mixture. This is the increased stress that the engine components are subjected to. Make sense so far?

Okay, now with a Paxton system such as yours you are also increasing the cylinder pressure during the compression stroke as you have forced more air/fuel mixture into the cylinder. This also increases the cylinder pressure during combustion and the power stroke as it is burning that extra air/fuel mixture. So what happens in the FI engine is a combination of a FI and NA engine. The cylinder pressure is the same on the compression stroke, but the cylinder pressure during combustion and the power stroke is a combination of the extra air/fuel mixture from the FI system and the oxygen/fuel from the Nitrous system.

Does that help?:confused: :dontknow:

I really tried to dumb this down so that even Mikey could understand it if he stops by this thread.;) :p :D
Click to expand...

Yes it helps... after reading it 10 times....:confused:
 
Wouldn't colder plugs and meth injection help lower the compression? :dontknow:
 
read that originial post paragraph to yourself using a dr. seuss narrator voice. haha weird.
 
Silverback said:
Well Tim, let me see if I can help out a little.

I'm going to start with a non-boosted engine and then just explain the difference in your situation.

When you inject Nitrous (better Roz?:dontknow: ;) :D ) it has no affect on the cylinder pressures during the intake stroke. All it is doing is adding more oxygen and fuel, which is basically what a FI system does.

However, it greatly increases the cylinder pressure during combustion and the power stroke as it is burning that extra oxygen/fuel mixture. This is the increased stress that the engine components are subjected to. Make sense so far?

Okay, now with a Paxton system such as yours you are also increasing the cylinder pressure during the compression stroke as you have forced more air/fuel mixture into the cylinder. This also increases the cylinder pressure during combustion and the power stroke as it is burning that extra air/fuel mixture. So what happens in the FI engine is a combination of a FI and NA engine. The cylinder pressure is the same on the compression stroke, but the cylinder pressure during combustion and the power stroke is a combination of the extra air/fuel mixture from the FI system and the oxygen/fuel from the Nitrous system.

Does that help?:confused: :dontknow:

I really tried to dumb this down so that even Mikey could understand it if he stops by this thread.;) :p :D
Click to expand...

Yo John,

You may have to dumb it down even further for a musician.

I understand the principles you've outlined, but take me back to the part where a combo of nitrous and F/I will nuke my bottom end... I understand the pistons and cylinders are the weak link.....

D
 
It won't lower the compression, it will lower the cyl temp and thus the detonation ceiling. Also the poor mans supercharger No2, during the combustion cycle the Nitrogen atom breaks away, does not burn and aids in reducing the cyl temp. I always thought a 100 shot would live all day long, if installed with the proper safeties. Such as WOT switch, RPM window Switch and a retarder if the shot was big enough.
 
Silent D said:
Yo John,

You may have to dumb it down even further for a musician.

I understand the principles you've outlined, but take me back to the part where a combo of nitrous and F/I will nuke my bottom end... I understand the pistons and cylinders are the weak link.....

D
Click to expand...

Will it help if I type slowwwweeeeeeeerrrrrrrrrrrrrrrrr.;) :D

It's a cumalitive process. The FI system generates greater cylinder pressures on the power stroke. The Nitrous adds to those already greater cylinder pressures.

I guess I should add that.............

Never mind, here is an example.

For the sake of arguement, and they are nice even numbers, let's say that the stock cylinder pressure is 1000 whatevers. Now, 1000 is just a number, not an actual cylinder pressure.

Okay, both the FI and Nitrous system increase the power stroke by 20%.

So the FI system by itself raises the cylinder pressure to 1200 whatevers. The Nitrous will not raise it by another 200 whatevers. It will raise it by 20% of the 1200, so your final cylinder pressure will be 1440 whatevers.

Did that help?
 
Silverback said:
Will it help if I type slowwwweeeeeeeerrrrrrrrrrrrrrrrr.;) :D

It's a cumalitive process. The FI system generates greater cylinder pressures on the power stroke. The Nitrous adds to those already greater cylinder pressures.

I guess I should add that.............

Never mind, here is an example.

For the sake of arguement, and they are nice even numbers, let's say that the stock cylinder pressure is 1000 whatevers. Now, 1000 is just a number, not an actual cylinder pressure.

Okay, both the FI and Nitrous system increase the power stroke by 20%.

So the FI system by itself raises the cylinder pressure to 1200 whatevers. The Nitrous will not raise it by another 200 whatevers. It will raise it by 20% of the 1200, so your final cylinder pressure will be 1440 whatevers.

Did that help?
Click to expand...

But is the crank capable of handling 1440 whatevers?:dontknow:

Whats the the threshold?
 
Hey Tim,
Daniel ran a 100 shot nitrous/propane system without any problems so I would think a 50 shot would not be a problem but I would consider running a wet kit. Maybe Daniel or Nowwhat will chime in here sometime.
 
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