Nitrous Questions

[Mixedpuppy]

Couple Nitrous Questions.

#1 What is the difference between Wet vs Dry Nitrous?

#2 Is it appropriate to use when street racing?

#3 What should someone do to prepare their 4th Gen F-Body prior to installing nitrous? Anything to prevent damaging the vehicle.

#4 How much more horses can one gain with Nitrous?

Thanx in advance guys.

[Joe 1320]

Re: Nitrous Questions

Originally posted by Mixedpuppy
Couple Nitrous Questions.

#1 What is the difference between Wet vs Dry Nitrous?

A wet kit injects nitrous and gas into the manifold, a dry kit injects nitrous only. Additional fuel comes from the injectors.

#2 Is it appropriate to use when street racing?

Street racing is way too dangerous, besides being illegal. Nitrous is used when you want to gain that extra power.

#3 What should someone do to prepare their 4th Gen F-Body prior to installing nitrous? Anything to prevent damaging the vehicle.

Have a really good fuel and ignition system

#4 How much more horses can one gain with Nitrous?

The most that should be injected in a stock motor is half of it's original HP. example..... a 300 HP motor should only be asked to withstand another 150HP from nitrous for a total of 450.

Thanx in advance guys.

[Injuneer]

Re: Nitrous Questions

Here's a link that will explain the basics.

#1 What is the difference between Wet vs Dry Nitrous?

Dry nitrous adds ONLY the nitrous to the intake manifold, and uses the stock fuel injectors to add the extra fuel. Wet nitrous adds the fuel and the nitrous to the intake manifold.


#2 Is it appropriate to use when street racing?

It can be used, but its hard to control. Nitrous tends to be "on" or "off".... no in between. Add a sudden 150ft-lb of torque and you better have some good tires under the car. There are ways to control is... progressive controllers or staged systems that bring the nitrous on slowy to prevent blowing the tires away. Or you just spray in 2nd gear.


#3 What should someone do to prepare their 4th Gen F-Body prior to installing nitrous? Anything to prevent damaging the vehicle.

Follow the link. For a wet system, you will need to find a way to get the fuel to the spray nozzles or spray bar. For a dry system, stock injectors can't handle the elevated pressures so you might need to replace them. In general, the stock platinum tipped plugs are a poor choice for nitrous. And you will generally need a slightly colder plug, and a smaller gap. For anything over 100HP, its a good idea to retard the ignition timing a few degrees. There are ignition "boxes" available that will provide this and improve the spark.

Those boxes will also incorporate a "window switch". This allows you to set the lower RPM limit for the nitrous to activate (you don't want to spray below 2,500-3,000rpm) and the upper limit for a rev limiter (you want to cut nitrous before the stock "cuts fuel" limiter kicks in). It doesn't hurt to add a fuel pressure safety switch (cuts nitrous off if fuel pressure drops), and things like fuel and nitrous pressure gauges.


#4 How much more horses can one gain with Nitrou under the car. There are ways to control is... progressive controllers or staged systems that bring the nitrous on slowy to prevent blowing the tires away. Or you just spray in 2nd gear.


#3 What should someone do to prepare their 4th Gen F-Body prior to installing nitrous? Anything to prevent damaging the vehicle.

Follow the link. For a wet system, you will need to find a way to get the fuel to the spray nozzles or spray bar. For a dry system, stock injectors can't handle the elevated pressures so you might need to replace them. In general, the stock platinum tipped plugs are a poor choice for nitrous. And you will generally need a slightly colder plug, and a smaller gap. For anything over 100HP, its a good idea to retard the ignition timing a few degrees. There are ignition "boxes" available that will provide this and improve the spark.

Those boxes will also incorporate a "window switch". This allows you to set the lower RPM limit for the nitrous to activate (you don't want to spray below 2,500-3,000rpm) and the upper limit for a rev limiter (you want to cut nitrous before the stock "cuts fuel" limiter kicks in). It doesn't hurt to add a fuel pressure safety switch (cuts nitrous off if fuel pressure drops), and things like fuel and nitrous pressure gauges.


#4 How much more horses can one gain with Nitrous?

For a stock engine, I'd say limit it to 150HP. There are people running up to 200 on a stock bottom end, but I wouldn't. The kits in the 125-150HP range are best. With a built up bottom end, and good tuning, 300HP is possible, and probably a lot more if you are building an all out track motor.

[Mixedpuppy]

THANKS INJUNEER,

Your a real asset to this site. Appreciate the experience and insite.