Question:
What is NOS?
seagull
2007-04-04 05:06:11 UTC
In movies like "Fast and Furious", you might seen modified cars with a special engine system called "NOS". In these movie when you press a button in steering, the car would run like rocket! I know NOS means Nitrous-Oxide System. but what is it actually? Is it possible to set this thing with my car (Toyota corolla Premio)? And where do I need to go for it? How much does it cost? Is it safe? Pleeeese answer....
Nine answers:
Chali
2007-04-04 05:10:08 UTC
Yes you can... You will want to take it to a shop to get it done. I have included all of the details that I could find.

Cost is at the bottom, but it is relative to the shop you take it to and don't forget labor is usually extra.



Ok,

Accourding to Wikipedia...

There are three types of nitrous systems: "dry", "wet single-point", and "wet multi-point". A nitrous system is primarily concerned with introducing fuel and nitrous into the engine's cylinders, and combining them for most efficient combustion. A fourth type called a plenum bar system sprays the nitrous into the plenums of the intake manifold.



[edit] "Dry" nitrous system



In a "dry" nitrous system, extra fuel required is introduced through the fuel injectors, keeping the upper intake dry of fuel. This property is what gives the "dry" system its name. Fuel flow can be increased either by increasing the pressure in the fuel injection system, or by modifying the vehicles' computer to increase the time the fuel injectors remain open during the engine cycle. This is typically done by spraying nitrous past the MAF sensor (Mass Air Flow), which then sends a signal to the vehicle's computer telling it that it sees colder denser air, and that more fuel is needed. This is typically not an exact method of adding fuel. Once additional fuel has been introduced, it can burn with the extra oxygen provided by the nitrous, providing additional power.



Dry nitrous systems rely on a single type nozzle that only sprays nitrous through it, not nitrous and fuel. These nitrous nozzles generally spray in a 90 degree pattern.



[edit] "Wet single-point" nitrous system



A "wet single-point" nitrous system introduces the fuel and nitrous together, causing the upper intake to become wet with fuel. In carbureted applications, this is typically accomplished with a spraybar plate mounted between the carburetor base and the intake manifold, while cars fitted with electronic fuel injection often use a plate mounted between the manifold and the base of the throttle body, or a single nozzle mounted in the intake tract. However, the intake must be designed for wet flow (for example, carburetors also require a wet flow intake), as distribution problems or intake backfires may result. Dry-flow intakes are designed to contain only air, which will travel through smaller pipes and tighter turns with less pressure, whereas wet-flow intakes are designed to contain a mixture of fuel and air. "Wet" nitrous systems tend to produce more power than "dry" systems, but are correspondingly more expensive and difficult to install.



A wet nozzle differs in the way that it takes in both nitrous and fuel which are metered by jets to create a perfect or proper A/F (air fuel ratio).



Newer wet nitrous kits on domestic cars have become increasingly easy to install by pulling fuel via the schraeder valve on the fuel rail which is normally designated as a fuel test port. It makes plumbing and using a wet nitrous kit much more simple. ==



[edit] "Wet direct port" nitrous system



A "wet direct port" nitrous system introduces nitrous and fuel directly into each intake port on the engine. These systems are also known as direct port nitrous systems. Normally, these systems combine nitrous and fuel through several nozzles similar in design to a "wet single-point" nozzle, which mixes and meters the nitrous and fuel delivered to each cylinder individually, allowing each cylinder's nitrous/fuel ratio to be adjusted without affecting the other cylinders. Note that there are still several ways to introduce nitrous through a direct port system. There are several different types of nozzles and placements ranging from fogger nozzles that require you to drill and tap your manifold, to specialty direct port efi nozzles that fit into your fuel injector ports along with your fuel injectors.



A multi-point system is the most powerful and efficient type of nitrous system, due to the placement of the nozzle in each runner, as well as the ability to use more and higher capacity solenoid valves. Wet multi-point kits can go as high as 1,100 horsepower (820 kW) with only one stage, but most produce that much power with two or three systems. These systems are also the most complex and expensive systems, requiring significant modification to the engine, including adding a distribution block and solenoid assembly, as well as drilling, tapping, and building plumbing for each cylinder intake. These systems are most often used on racing vehicles specially built to take the strain of such high power levels. Many high-horsepower race applications will use more than one nozzle per cylinder, plumbed in "stages" to allow greater control of how much power is delivered with each stage. A two-stage system will actually allow three different levels of additional horsepower; for example, a small first stage can be used in first gear to prevent excessive wheelspin, then turned off in favor of a larger second stage once the car is moving. In top gear, both stages can be activated at the same time for maximum horsepower.



[edit] Plenum bar



Another type of system is called a plenum bar system. These are spraybars that are installed inside of the plenums of the intake manifold. Plenum bar systems are usually used in conjunction with direct port systems in multi-stage nitrous systems.





How to set it up in a Toyota Corolla Premio..



Here is one kit that may work for you....

How to Install a Nitrous System

-=Eddie=- Mar 31 2006 - 9:47pm



#

NOS Kit Number 5151



This is a very quick and basic article on how to install the NOS kit 5151, for the TPI equipped Camaro, Firebird, and Corvette. The information here is taken directly from the installation manual provided by NOS. Of course the manual is more detailed, but the point of this article is to give a brief explanation of installation procedures. A full installation manual can be purchased separately from NOS for $5.00. The manual is included with the setup.



#

Step 1: Mounting the Bottle



NOS recommends mounting the bottle in the well, in the hatch area, by using the supplied brackets. Because of the open compartment in the 3rd generation F-Bodies a safety blow-down tube is used. The bottle should be turned approximately 45 degrees so the label is facing towards the front of the car. This will place the pickup tube near the back of the bottle where the an ample amount of nitrous will be during acceleration. The bottle brackets need to be screwed down to the floor of the well to prevent the bottle from moving around during acceleration. Two holes will need to be drilled in the floor. One of these holes is for the safety blow-down tube and the other is for the nitrous feed line.



#

Step 2: Injector Plate Mounting



First remove throttle linkage and throttle body. Then install plate and gaskets onto the upper plenum with the spray bar orifices facing into the upper plenum. Then reinstall the throttle body and linkage with the extended bolts and throttle linkage. Simple.



#

Step 3: Fuel feed lines



**For safety disconnect the negative terminal of the battery** Locate the schrader valve on the fuel rail. Remove protective black cap and decore the schrader valve using a tire valve core tool.



#

Step 4: Fuel and Nitrous solenoids



Place the nitrous solenoid in a padded vice and install the supplied nitrous filter into the inlet side of the solenoid using Teflon tape. Next, install the supplied 2-ft. braided line with the blue fittings, to the outlet side of the solenoid using Teflon tape.. Now place the Fuel solenoid in the vice and install the 2-ft. Piece of braided line that has red fittings to the inlet side of the solenoid (of course using Teflon tape). Then install the other 2-ft. Piece of braided line, with the r ed fittings, to the outlet side of the solenoid. (Don't forget the Teflon tape or you will have a very Hazardous Leak!!) Next, mount the fuel and nitrous solenoids to the solenoid mounting bracket. Now mount the bracket in a place where the fuel feed line will be able to reach the solenoid and at the same time be able to reach the injector plate. As shown in the picture, the bracket was mounted to the strut tower. Connect the fuel feed line to the schrader valve, and connect the remaining lines to the injector plate. **Note - All N.P.T. fittings must be sealed with Teflon Tape!**



#

Step 5: Nitrous feed line routing.



This is a simple step, but needs a lot of attention. Basically connect the supplied braided line to the valve on the bottle and to the Nitrous solenoid. Routing the line under the car needs to be done properly. Make sure the line isn't near any moving parts. If this line gets broken while the bottle valve is opened, a full bottle will empty in approximately 1 minute. ** Note - before connecting line to the Nitrous solenoid, It is a good idea to purge the bottle once to release any condensation that may have gathered inside. Basically to do this just open the bottle for a few seconds.**



#

Step 6: Throttle Micro-Switch Installation



The micro-switch is mounted to the throttle bracket. This switch is what actually activates the solenoids. Therefore proper installation is essential. Adjust the switch so that at wide open throttle the switch is depressed. For proper accuracy, have a friend sit in the car and floor the accelerator pedal. At full throttle you should here a quiet click. This means the switch has been activated. Make adjustments so that the switch is activated only at full throttle. This will ensure the computer is in an open-loop and the fuel mixture is adequate.



#

Step 7: Wiring of the system.



This step is probably the hardest, but can still be done by you. See picture for exploded view of system. The system is simple in that you have two switches to activate for the system to be operative. The first switch is mounted in the car and activated first. This switch should be on whenever you are ready to hit the throttle. The first switch supplies the power to the throttle switch. Then, when the throttle is fully opened, the throttle switch activates the solenoids to open and release fuel and nitrous into the system. The system has its own power and ground, and the actual power to the solenoids is run through a supplied relay.



#

Step 8: Preparing for operation



Reconnect the negative terminal on the battery and turn ignition on. Check for leaks at this time at all fuel connections. Then open valve on the bottle. Check for leaks at all nitrous connections. Temporarily disconnect the ground wire from the Nitrous solenoid. Activate the switch mounted inside the car. Start engine and have a friend rev to 2500 RPM. Manually depress throttle switch for a second or two, to open Fuel solenoid. At this time you should notice a bog in the engine. This means the electrical system is functioning properly. Reconnect ground wire to Nitrous solenoid. Find yourself an open street and LET IT RIP!!!



#

Conclusion:



NOS system 5151 have adjustable Jets to properly set your horsepower levels. NOS recommends 100 horsepower for a 305 and up to 150 horsepower for a 350. NOS states that the stock fuel pump is adequate for these levels of horsepower and the stock timing does not need to be adjusted. This is a very thorough kit that comes complete with everything you will need for proper installation.



#

Personal additions:



There are a few parts I recommend installing along with this kit. For proper operation of the nitrous system the nitrous pressure must be approximately 900 psi. With the temperature constantly changing it is a good idea to install a Nitrous Pressure gauge. This will put you in control of how much pressure is actually getting to the solenoid. Personally, I would recommend an Auto Meter Nitrous Pressure gauge. I would also recommend installing an Auto Meter electric Fuel Pressure gauge. This will allow you to keep an eye on fuel pressure for proper tuning. I do not feel that stock fuel pressure settings are adequate. It is better to be safe than sorry so I bumped up my fuel pressure by 2 psi. These gauges can be easily installed by using the NOS gauge adaptors. If you are using an aftermarket CHIP for your car then an adjustable timing retard may also be a good idea. Most aftermarket chips have a really aggressive timing curve and NOS does not recommend that their kit be used in conjunction with one of these chips. Since it seems that one of the first mods that everyone does is a CHIP, then an adjustable timing retard such as the one MSD offers is a perfect compliment to the nitrous system. The timing retard can be wired up in such a way that when the nitrous system is activated the timing retard is activated. Then as RPM's increase, timing decreases.



Here is where you get them....



Nitrous Oxide Systems

5930 Lakeshore Dr.

Cypress, CA 90630

(714)821-0580

http://www.nosnitrous.com



Autotronic Controls (MSD)

1490 Henry Brennan Dr.

El Paso, TX

(915)857.5200

http://www.msdignition.com



Auto Meter Products

413 W. Elm St.

Sycamore, IL 60178

(815)895.8141

http://www.autometer.com





Cost...



NITROUS EXPRESS NITROUS SYSTEM



# 1.8L, 4 Cylinder, GAS, FI, VIN "R", 1ZZFE, MFI

Toyota Corolla Premio



$704.95



and that is just the kit, not including labor!
anonymous
2007-04-04 05:22:28 UTC
NOS is a general term for oxides of nitrogen including NO, NO2, N2O and N2O5. Adding N2O (nitrous oxide injection) to an air-fuel flame increases the combustion temperature and the power output at the expense of shortening engine life. Also used, believe it or not, in some scientific instruments like the atomic absorption spectrophotometer to increase flame temperature in an air-acetylene flame.



First used I believe in World War II fighters including the Spitfire. More than a few seconds would blow holes in piston crowns etc and then the Messerschmidt would certainly catch you, or get away. Now mostly used by drag racers.



N2O is injected into the combustion chambers for a temporary large increase in engine power. Putting it on your Corolla might be amusing, but I doubt the engineers back in Japan would find it funny. I used to know of a big Mercedes-Benz in San Francisco that had both nitrous oxide injection and a supercharger. He's probably blown it up by now. What fun.
anonymous
2007-04-04 05:33:38 UTC
I think you are talking about NOx or Nitrogen oxides,,,,,Its nothing but the booster which is attached to the cars or bikes that splits the nitrous oxide(NO2) gas in to nitrogen and oxygen saperately, the oxygen got from this is passed through the combustion chamber of the engine, the more the amount of oxygen supplied, greater the power is obtained from the engine, this increases the performance of the car as well the speed.

Nitrous oxide boosters are mostly used in rallies (WRC) and not in ordinary cars, as there are chances of wearing of engines sooner and speed disasters....................NMN
anonymous
2007-04-04 05:10:21 UTC
I don't think i'd be setting up any nitrous oxide system on a four banger! Your looking at $2000 plus for a standard chevy 350! So your Toyota, if any such thing were even to exist, would probably be $3000 or more!
jomcgre3
2007-04-04 05:16:06 UTC
Nitrous oxide, also known as laughing gas, is dangerous stuff. It would require a MAJOR rebuild of your engine, as it would blow a hole right through your pistons within 10 seconds! It is not for street cars. Just for dragsters and movie stunts. Save your money. There are safer and cheaper ways to increase performance.
anonymous
2007-04-04 05:17:26 UTC
NOS =/= Nitrous-Oxide System

NOS =No One Survive
Mike
2007-04-04 05:47:05 UTC
its a system you install that can install to the carb or somewhere else and gives ita shot! its extremley flammable which is the cause for the "rocket"...no its not safe! you can ut it in your car! buy a import tuner magazine in a stor and oreder it from there! you can also buy the whole nos system there! even a 100 horse power NOS
anonymous
2016-12-20 10:36:43 UTC
i admire the Amp interior the pink and the Blue can the golf green can that stuff is depraved.. under no circumstances attempted Nos, yet i admire Monster.. one element for particular the guy on the nook save suggested ever in view that they placed up that existence length Dale Jr Amp demonstrate, he will no longer be able to maintain the stuff.. i think of they choose a race of the flexibility beverages do no longer neglect pink Bull.. one million-2 interior the standings endof the year, who knows we are able to all in basic terms would desire to attend and notice.. pass Dale Jr & Hms
sscaptain16
2007-04-04 05:11:50 UTC
something that makes the car go very fast


This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.
Loading...