Well does any one run a seperate fuel system for there n2o? I was thinking about relocating the battery to the trunk and putting a 1-2 gal fuel cell in it place. Putting just race gas in the cell feeding the n2o system? Any one have any pics or suggestions?

Thanks
Joe

 

I might just be too **** about it, but I run a 50/50 mix of 91 octane and 101 octane (in the main tank), when I'm juicing. A small tank of race gas just feeding the nitrous system wouldn't get near that much octane in. I don't know if I need that much, but that's what I do.

Dave

 

That depends on how much you're sprayn

 

...compared to how much your motor puts out NA

Dave

 

Car put out 412RWHP I planon spraying 150 wet shot max via NX kit. Maybe later when i get the bottom end built for n20 it will be a dual stage of 150x2. ?

 

I believe seperate tank of race gas will not give you any benefit from higher octaine if you run pump gas in the tank. The reason being that the race gas and pump gas are both atomized when leaving the injector/N2O nozzle and they do not mix. The pump gas will ignite as it normally would which in turn will ignite the race gas. Therefore, you will not gain any benefit from the higher octaine.

 

I think that ur wrong. No offense. Why do u see the race cars at the track run a seperate NOS fuel system????? Your tryin to make too much sense out of it!!!





Not to sound like a smart ***.

 

No offense taken. I was just wondering what cars you have seen running seperate fuels? Are these cars bracket racer weekend warriors or class specific racers such as IHRA T/D or pro-mod?

 

I've heard that theory before too. Sounds reasonable, but has anyone tested it out. I've heard of quite a few people on this board who've ran a separate tank with race gas, and I dont remember them mentioning any detonation problems. But whose to say that they wouldnt have been OK on pump gas alone <<shrug>>. I'd like to find out more though.

 

And the octane of the the hot gas you're using...

 

I guess I'll throw my $.02 in here. I do have a seperate fuel system, however I myself am not doing it for the reason of fuel octane. On the system, I will have the same fuel in the main tank, as the N20 Enrichment tank.

My Method is that doing this will allow me a more stable fuel supply, being that I'm not depending on a single Pump to feed the Wet Nitrous system. Obviously with the right fuel system this isn't an issue, but this also allows me to measure the amount of fuel used more easily, and correlate it to the actualy amount of Nitrous used after each pass.

From research that I have seen in the Higher up circles Pro Mod, Pro Street etc, using 2 different octanes can lead to just waht Red stated. Burning of the Lower Octane fuel FIRST, basically negating the effect you were after in the first place, by using the higher octane, slower burning fuel. This is all just conjecture as I don't have any experience in doing just that.

Picture

 

I'm running a seperate fuel system as well, but using bungs in the stock tank for both systems (with 93 octane).

Regarding the separate octane fuels though, I just wonder how well the 2 fuels mix (or dont mix) before they ignite. I realize they are sprayed out in a mist, but I'd guess that they would have some opportunity to mix since the injectors are pulsing through the fog patten of the nitrous/fuel. Then it would seem to mix further during the compression stroke, before ignition. I would think that batch fire systems would even have a greater opportunity to allow the different octane fuels to mix before entering some of the cylinders.

I'd really like to know more about how the 2 fuels mix while being sprayed, before I disregard it as a future option. If I go with flat tops down the road, it would be nice to avoid having to buy 1/2 tank of hot gas at a time when I wanted to spay. Especially for street duty.

 

first of all, most of the fast cars run a seperate fuel system because of the pure volume of fuel they must move.


I ran 116 in my cell, and it seemed to help. I sprayed 100shot on top of 12.2:1 or so compression with out problems.

When I ran bigger hp(225+) i ran at least half half 116/93 in the main tank.. I tried to ru 100% 116.