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Old 04-24-2001, 08:14 AM   #1
bratmantlz
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Post nitruos in a N/A car?

on a 98RS? will it work i kinda want some temporary power and wouldnt mind some juice. what all would ential me getting my 98 RS juiced? if i just use it for a lil bit will it be bad for the car? i must get a lil more power. and cant afford boost yet.........
Brian
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Old 04-24-2001, 08:31 AM   #2
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Brian,
A mechanic I know is begging me to nitrous my car. He has done over 2 dozen various makes before, and said if done properly, the 2.5 will handle it well. I do believe him, as he nitrous'ed my friends 91 accord (pos) and he's got over 130,000miles now with nitrous since 85,000 and no problems. I know this is very general, but the physics of NO2 make sense if the car can handle the power.

CHad
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Old 04-24-2001, 08:41 AM   #3
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cool let me know or post if you do juice your car. and how you like it
Brian
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Old 04-24-2001, 08:43 AM   #4
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Brian,
I might consider it if I were keeping it, but I'm not. Also, my big turnoff with nitrous is that I would ALWAYS want to be pushing that damn button. I'm a leadfoot and I don't think I could resist the temptation!

Chad
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Old 04-24-2001, 08:55 AM   #5
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i understand man same here ocasionally, hell my son heres my engine and goes race?? i then have to stop and get off the gas. oh well thanks for the info eh..
Brian
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Old 04-24-2001, 09:42 AM   #6
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It is impossible to have nitrous on a NA car. Then you have a Forced Induction car.
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Old 04-24-2001, 09:45 AM   #7
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i was under the impression that forced induction was turbo or supercharging... i just want to add nitrous.. maybe. anyone
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Old 04-24-2001, 10:10 AM   #8
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Brian-this guy doesn't know what he's talking about. Ignore him. Nitrous in NO WAY forces air into the motor. I'm not gonna start explaining b/c he's just flapping his jaws, or fingers

Chad
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Old 04-24-2001, 10:17 AM   #9
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Nitrous does not equal forced induction. Nitrous simply carries more oxygen than normal "air", so you can add more fuel in with it and create more power.

Kind of the same idea as a turbo (more oxygen + more gas = more power), but there's nothing forced into your motor with nitrous.
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Old 04-24-2001, 01:28 PM   #10
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Nothing forced? Is that why the bottle is pressurized?
Nitrous is a form of forced induction. It forcing more oxygen into the engine than it could draw in on it's own...
Perhaps a better term would be super-naturally aspirated instead of forced induction.
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Old 04-24-2001, 06:52 PM   #11
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The bottle is pressurized so you can fit more in there. If it weren't pressurized, you'd have about 2 seconds of nitrous per bottle....

It's not "forced", because you're not pushing the nitrous in there any more than the fuel injectors are pushing fuel in (yes, I know they spray it at a certain pressure, but they're not squishing it like a turbo would). The nitrous is sprayed into the intake (in various places depending on nitrous setup), and it flows along with the air/fuel mixture as the engine breathes it in.

The extra oxygen is simply a byproduct of the nitrous, and isn't a result of pressurization. The nitrous takes the place of some of the normal air that would be in the cylinder and carries more oxygen than that air.

Whew....I think that's readable....
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Old 04-24-2001, 07:05 PM   #12
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Nitrous ... forced induction - two totally seperate things. Here's how it really works for your car.

When you heat nitrous oxide to about 570 degrees F, it splits into oxygen and nitrogen. The injection of nitrous oxide into an engine therefore means that more oxygen is available during combustion. Because you have more oxygen you can also inject more fuel, and that means the same engine can produce more power.

Nitrous oxide has another effect that improves performance even more. When it vaporizes, nitrous oxide provides a significant cooling effect on the intake air. When you reduce the intake air temperature you increase the air's density, and this provides even more oxygen inside the cylinder.

The only problem with nitrous oxide is that it is fairly bulky and the engine needs a lot of it. Like any gas it takes up a fair amount of space even when compressed into a liquid. A 5-liter engine running at 4,000 RPM consumes about 10,000 liters of air every minute (compared to about 0.2 liters of gasoline), so it would take a tremendous amount of nitrous oxide to run a car continuously.

Forced induction... please
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Old 04-25-2001, 05:33 AM   #13
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so who of has responded uhh yeah.. who has nitrous in their car..? and what was entailed with putting it in. is it affordable? i want to use it for a while then sell it. plus i can get bottles recharged $35 around...
Brian
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Old 04-25-2001, 06:11 AM   #14
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I was in the same position your in now. I want a turbo but didnt have the money yet, so i bought a nitrous kit. Its proven that the internals of the 2.5 and the 2.2 can take a beating. The biggest shot i would run would be a 65 shot, I am running a 55 shot off the Zex kit. The only problem is hoping your clutch will slip before your tranny blows
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Old 04-25-2001, 06:30 AM   #15
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nope x i have an auto so when i boost i willl be good there too
Brian
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Old 04-25-2001, 06:56 AM   #16
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Brian,
Check out Venoms web page. I think it's www.venom-performance.com. There's a graph of a nitrous'ed 2.5 somewhere there. Venom is the only kit my friend will use, for what it's worth.

Chad
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Old 04-25-2001, 10:28 AM   #17
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so... not to really start a fight here... I think we're arguing over semantics, but let's break down the term "forced induction". First lets clarify that "of oxygen" is assumed... I use this extension because if you refer to the fuel in this term, then any car that runs on fuel would be forced induction... or at least any car running rich...
Force(n.)-The capacity to do work or cause physical change.
Induct(v.)-To recieve, as a member; To introduce into.
A turbo/supercharger has the capacity to mechanically(read: physical) change the amount air(therfore oxygen) introduced into the cylinder that the piston could normally draw in. On the other hand, nitrous has the capacity to chemically(read: physical) change the amount of oxygen recieved in the cylinder.
So from the basics, they would both be forced induction, just different methods. They work differently, and because of this, they have other benefits and problems of their own.
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Old 04-25-2001, 10:38 AM   #18
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mrbell -- yes, if you put it that way, nitrous is a way of "forcing" more oxygen into the cylinders than would normally be there. It's just that forced induction is usually meant to describe a motor that has its intake air compressed by a turbo/supercharger.

I've never really heard the term applied to a nitrous (only) car, but if you define it that way, it works.
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Old 04-25-2001, 04:31 PM   #19
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go start another post about forced induction, why can;t anybody just answer the question, because I'm curios too, is it safe on a n/a 2.5 or not,?
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Old 04-25-2001, 04:37 PM   #20
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SuBart -- sorry about that.

I don't really see any reason why it would be a problem, as long as you get a good nitrous setup and the engine isn't starved for fuel or anything. I remember seeing an article on a bunch of guys from a car magazine that rented a Neon for a weekend, put on a nitrous system (a 150 shot, I believe?), played with it for the weekend, took off the nitrous and returned it with no problems.

Now obviously, that's an extreme case, but you should be fine as long as you go about it correctly.

[edit -- can't spell tonight!]

[This message has been edited by BrandonC (edited April 25, 2001).]
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Old 04-25-2001, 05:06 PM   #21
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Sorry for being a wise guy. Nitrous is Forced Induction. You are forcing more oxygen into the engine so you can get more fuel in. Why do you think you have to turn up the fuel pressure when you activate the nitrous? It is the same idea, just a different method. I have been on other forums that have argued this same point, and basicly it is pointless to argue about it. Really, who cares? Only us.

To answer you question, if it is good for an Acura or Honda it is good for a Subaru. Now based on how strong the internals are, you have to make sure you don't do to much.
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Old 04-25-2001, 05:15 PM   #22
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thank you
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Old 04-26-2001, 05:43 AM   #23
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so what are the power increases with this? i just want some quick power and when i am done i want to sell the kit.
Brian
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Old 04-26-2001, 06:55 AM   #24
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Brian,
It all depends on how much NO2 you're injecting. Thats why kits come in "50 shot) or "75 shot" etc. I would assume going over 75, you would start running into drivetrain problems, considering with nitrous it is a sudden burst of power, things tend to break easier.

Chad
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Old 04-26-2001, 09:47 AM   #25
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They call them "55 hp shot". But a 55 shot does not add 55 hp. On a smaller engine, (read 4 cylinder) it makes less than that. I think a 50 shot will make about 35 to 40 hp. On a big V8, it will make more than that.
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