Twin Turbo 800
The propane tank utilizes a pressure gauge similiar to that of the nitrous tank. The user monitors the pressure just as he does nitrous pressure. The great thing is that a 5 pound propane tank lasts over 60 full 1/4 mile passes. The pressure required for the propane is much lower than nitrous(140-160 psi) and is more easily regulated with regards to atmospheric temperature.
Viper Steve,
Fuel puddling happens when say you shut your engine down after WOT like a 1/4 mile pass and you did not idle long enough to use all of the fuel injected into the intake, or have an injector that is seeping. By design the viper intake manifold has crevises and bends, not to mention casting flash, all of which can trap liquid gasoline. This is very common with the carburated 426 hemi intake manifolds that are similiar in design to your viper intake. The design is called "crossram". All air that enters through the left throttle body actually goes to the bank of cylinders on the RIGHT side of the engine and vice versa. The long runners create more velocity which in a nutshell creates more power but puddling is a drawback. I have ran these types of manifolds for 20 years and have seen the result of fuel puddling(ignition of the fuel on the subsequent engine start).
Im not a viper design engineer, but i know this; the viper engine idles VERY LEAN, maybe its for emissions, maybe it is a safegaurd for scenerios like the above.
Now, enter the fuel additive for a nitrous wet system. That extra gasoline is going to be sprayed right into the tb's. Where is the excess going after you disengage the nitrous? Maybe it will be scavenged into its perspective cylinder and combusted, maybe you elect to just shut down immediately after a nitrous test to check plugs(Hmmmmmmmm!!)
I prefer to not deal with any of the concerns of gasoline usage with nitrous in the viper. The engine needs all the fuel that the car can give it at WOT by itself, a nitrous system using gasoline, in my opinion, will only lead to a lean-dangerous mixture. Fuel starvation is the silent killer of nitrous engines. Remember that the fuel has to fight the same g forces that you do when it is traveling from the tank at the BACK of the car to the engine and nitrous/fuel solenoid under WOT acceleration, and the fuel solenoids demand is usually equal to that of the engine! and ALL AT ONCE!
When i leave the starting line, heading towards another low 10 second run, im not worried about fuel delivery and detonation! I can concentrate on the driving job at hand and how much fun Im having in the process.
tom
Http://btrviper.com
"if we had some ham, we could have some ham and eggs, if we had some eggs"
