Forced Induction and SwapsPost information/questions about Forced Induction methods (Turbos & Nitrous Oxide) and swaps here.
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I was wondering how a nitrous kit that is made for 4 cylinder cars, and come with lets say a 50 shot, would still be a50 shot on different sized engines? It just does not make since to me, could someone explain.
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When you take a certain amount of oxygen, and a proportional amount of fuel, it will create "X" amount of energy. That energy is horsepower.
It has nothing to do with the number of cylinders or the size of the motor. The efficiency of the motor and the RPM to which you spin the motor does effect the amount of power you make. But it usually stays within a very close percentage.
__________________ <--- Now known as Myika.
Quote:
In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move.
7thgen civic 13 second club Member #1 13.624 @ 101.887
when they say 50 shot they mean by the jet size which is basically universal. the engine size does not have anything to do with the jet size of the nitrous. the jet is the size opening on the end of the nitrous line that is fed into your car. but as everything else with cars some cars respond better to others with nitrous. some may gain 50hp from a 50 shot others 35hp. and alot of it depends on tunning. but shot size is universal. there is a diffrence in a wet kit or a dry kit. the shot size is the same but wet kits wil loffer more power over a dry kit, but are also harder to install even if not by much and generally more expensive.
I know it means jet size and i know the difference between wet, dry, and different fogger types like direct port. My questions was if you use the same nitrous fogger on 1.7 liter 4 cylinder and a 2.0 liter engine, how would the power increase be the same, it does not make since. (to me atleast)
"When you take a certain amount of oxygen, and a proportional amount of fuel, it will create "X" amount of energy. That energy is horsepower
It has nothing to do with the number of cylinders or the size of the motor. The efficiency of the motor and the RPM to which you spin the motor does effect the amount of power you make. But it usually stays within a very close percentage."
yes, but 12psi on a 1.7 and a2.0 differes, so your first equation does not help to answer my question.
Wait, i think i got it, more psi kinda of multiplies power depending on engine size, where as a nitrous system depends only fogger. The nitrous system gets more air in, but it is a fixed volume of air no matter the size of the engine. So effeciencey of the engine will determine if the engine actually uses the potenial 50 hp.
when running boost through a motor, you are compressing air into the cylinders. Normal atmospheric pressure is 14.7 psi. So when you push the throttle down on your car with no turbo, you are seeing 14.7 psi of pressure, or "zero vaccum". This displaces 1.7L in our motors.
So you take that same 1.7L and put boost to it. You run 14.7 psi of additional boost (that is 14.7 psi above normal atmospheric pressure), and you have the equivalent amount of air as a naturally aspirated 3.4L motor.
When running nitrous, you are compressing NOTHING. You are injecting a specific amount of nitrous into the motor. An exact number of molecules.
The volume of a fixed mass of gas is inversely proportional to the pressure at a constant temperature. PV=K
An increasing container volume decreases the pressure
A decreasing container volume increases the pressure.
When the volume of a container decreases, the distance between the gas molecules shrink. As a result of this they bump into each other more often than if they where farther apart. The increased molecular movements push at the walls inside the container and increases the pressure.
This means that to get the same exact amount of air in two different sized containers at the same temperature, you will have two different pressures.
So theoretically, if you took out 1.7L motor and turned it into a 3.4L motor (with the same efficiency, etc), and you took another 1.7L motor and put 14.7psi of boost to it (at the same temperature), they should yield the exact same amount of power, because they mathematically contain the exact same amount of air.
So with nitrous, you are spraying in only a certain amount. Lets say 4,000,000 molecules. That 4,000,000 molecules of N2O makes a 50 shot when combines with a proportional amount of fuel. It doesnt matter whether it is injected into a 1 cylinder motor, or a 12 cylinder motor. The nitrous and fuel will distribute between the cylinders. Even though the 4 and 12 cylinder motors are different sizes, they still have the EXACT SAME amount of nitrous in them. This creates the exact same amount of power.
If you have a 4 cylinder, 1,000,000 molecules go into the #1 cylinder yielding 12.5 hp, 1,000,000 molecules go into the #2 cylinder yielding 12.5 hp, 1,000,000 molecules go into the #3 cylinder yielding 12.5 hp, and 1,000,000 molecules go into the #4 cylinder yielding 12.5 hp. That adds up to 50 hp.
If you have a 12 cylinder, 250,000 molecules go into the #1 cylinder yielding 3.125 hp, 250,000 molecules go into the #2 cylinder yielding 3.125 hp, and so on up to the #12 cylinder. Totaling (yet again) 50 hp.
When turbocharging a car, you are adding a specific amount of pressure (not molecules). There are a lot of variables that effect the number of molecules at a specific pressure (temperature, engine displacement), with nitrous, it is all metered through a small jet, keeping the number of molecules injected into the motor very close to the same.
If you have the same exact amount of air (or nitrous) in each motor, they will make the same amount of power. Pressure/temp/displacement does not matter. X amount of fuel + Y amount of air = Z amount of power.
__________________ <--- Now known as Myika.
Quote:
In the beginning the Universe was created. This has made a lot of people very angry and been widely regarded as a bad move.
7thgen civic 13 second club Member #1 13.624 @ 101.887
I got it, it kinda popped in my head after your 1st post, thinking about hp as an equation. Thanks for the long explaination anyways, i donnot know why you posted it...
"Wait, i think i got it, more psi kinda of multiplies power depending on engine size, where as a nitrous system depends only fogger. The nitrous system gets more air in, but it is a fixed volume of air no matter the size of the engine. So effeciencey of the engine will determine if the engine actually uses the potenial 50 hp."...this pretty much sums up that whole post, and this was basically what you were saying in your 1st post.
Also, Can i get some???
__________________ Have you paid your dues jack? The check is in the mail
I got it, it kinda popped in my head after your 1st post, thinking about hp as an equation. Thanks for the long explaination anyways, i donnot know why you posted it...
"Wait, i think i got it, more psi kinda of multiplies power depending on engine size, where as a nitrous system depends only fogger. The nitrous system gets more air in, but it is a fixed volume of air no matter the size of the engine. So effeciencey of the engine will determine if the engine actually uses the potenial 50 hp."...this pretty much sums up that whole post, and this was basically what you were saying in your 1st post.
Also, Can i get some???
__________________ Have you paid your dues jack? The check is in the mail
Just don't get hooked, like I did spent 8 months in rehab after i ruptured a teste and was on oxycontin for 2 months, oh been clean for like 2 weeks now, takin it a day at a time.
__________________ Have you paid your dues jack? The check is in the mail
