Just remember Burn more fuel and you make more power. It's that simple. The problem is; internal combustion is MUCH different than external atmosphere combustion. If you throw a teaspoon of gas on the ground and light it, it'll burn. Toss a bucket of gas on the ground and it'll burn too, just bigger, hotter and more dangerously. Nitrous systems regulate the amount of oxygen and fuel so internal combustion can take place. This is how an engine can burn more fuel than it can suck-in through the carb, and why nitrous can make the engine produce so much more power.
You can put a match out with it. Can you light it with just the oxygen on? Oxygen doesn't burn. You need to light the acetylene first the fuel portion and THEN add the oxygen to get the flame and heat you want. What happens when you add the oxygen? The flame turns blue and gets hot.
Nitrous does the same thing with fuel inside the cylinder. Too rich, it burns cold and inefficient. Too lean, and just like that torch, it burns blue hot and will melt steel. The trick is to jet it in the middle of the road to control temperature so it burns the fuel nicely without being too cold or too hot. Nitrous kits come with a jetting map to show you exactly what fuel and nitrous jets to use so there is no guess work.
Follow their instructions and you won't have a problem. If you aren't an experienced expert and you start dicking around with the jetting though, you're asking for a serious engine failure. The worst thing you can do with a nitrous engine is lean it out.
Just like that torch, add too much oxygen and the flame gets really hot and will melt steel. Nitrous will never hurt your engine or "melt it down" if it is used properly and moderately.
Above 75hp, racing fuel is recommended for maximum engine safety. For 8 cylinder engines, premium pump gas is adequate for nitrous system settings up to hp. Above hp, racing fuel is recommended. Q: Do I need to change my fuel pump when adding a nitrous system? A: If you have basic bolt-ons performance filter, headers, exhaust, etc. If major modifications have been done to your engine heads, cam, turbo, supercharger, etc.
Q: What is the optimum bottle pressure to run my nitrous system? A: The optimum nitrous bottle pressure is psi. Most companies offers a bottle pressure gauge that makes it easy to monitor this.
Q: Do I have to change my spark plugs after installing the nitrous system? A: YES, Due to the increase in horsepower the nitrous system creates, the quantity of heat generated in the combustion chamber goes up. It is required that you install spark plugs that have at least two steps colder heat range. This helps to ensure detonation free performance when using the nitrous system.
NGK has nitrous specific spark plugs available for many makes and models of vehicles. Q: Is it OK to use a nitrous system on a high mileage engine? A: It is OK only if the engine is in good mechanical condition.
The primary concern is to ensure that the engine does not consume excessive oil. Oil in the combustion chamber can cause detonation. A: Generally the answer is NO. This additional timing, when using nitrous, can cause engine damaging detonation. Q: What is the safest way to activate a nitrous system? A: The safest way to activate a nitrous system is by using a wide-open throttle switch.
Most nitrous systems utilize this type of activation. Activating a nitrous system at anything less than wide-open throttle can greatly increase your chances for an intake system backfire. If you desire to use a push button for activation, most companies offers this as an accessory item. You can simply install the push button inline with the wide-open throttle switch.
A: We recommend at least rpm as a minimum for nitrous system activation. This ensures that you will not have excessive cylinder pressures that could cause engine damage.
The use of an RPM window switch ensures no premature activation. That's why one must be prudent when applying nitrous to an engine. Thanks to David Freiburger of Motor Trend, we now know what the limit is. To find it, Freiburger takes a stock Chevy engine and gradually adds more nitrous to it until it finally kicks the bucket.
As much as this experiment seems like a waste of a perfectly good engine, it's at least helpful to know what the limits are to prevent more motors from exploding. Add first comment. Now Buzzing. Electric Vehicles. What's Hot.
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