wierd setup, would it work?

[tonyz2897]

What I'd like to do is use a nitrous nozzle and 2 fuel solenoids. The fuel side of the nozzle would be connected to the car's fuel line through a solenoid, activated by a pressure switch and jetted to provide fuel for around 18 psi (stock cal). Pretty simple,sort of like the standard extra injector setup.

Now here's where things start to get interesting. On the nitrous side of the nozzle, I'd like to use another solenoid, pressure switch, and a seperate pump/tank to inject alcohol jetted to provide enough for extra fueling and detonation control for around 30 psi.

I've fooled around with both nitrous and extra injector setups quite a bit, but I've never even seen an alky injection setup in person, so I've qot a few questions and some of them are probably pretty stupid.
First off, do you think it would work?
Second, where do most people mount the tank for the alky and how big should it be? I was thinking of using a windshield washer or coolant tank.
Third, do you think the range of jets available for a standard issue nitrous nozzle would be wide enough to let me tune the setup properly?
Fourth, what kind of pumps would work? I was thinking of using a regular high pressure (fuel injection) inline pump.
That's all I can think of at the moment. Any suggestions, advice, or help is appreciated.
Thanks,
Tony
Edit: Forgot to mention that I'd like to do this on 93 octane pump gas.

[turbovanman]

I don't see why it wouldn't work.

For the fuel nozzle, just tee off your existing fuel line over by the right strut tower.

For the alcohol, why not a windshield washer pump or small toy type pump?
You don't need that much pressure and another windshield washer bottle would be fine.

I was comtemplating the NOS nozzle my first year but went with the cold starts instead. Ran 3 VW cold starts, stock fuel pump and injectors, 18 psi was the max it before I was too lean.

Good luck!

[tonyz2897]

Quote:

Originally Posted by turbovanman I don't see why it wouldn't work.

That's what I was wanting to hear!

Quote:

For the fuel nozzle, just tee off your existing fuel line over by the right strut tower.

That's the way I had the cold start injector setup on my '89 CS. Prettymuch straight out of Gary's site. I took a little creative liberty on the pressure switch though and used a 10 psi oil pressure switch with a restrictor orfice and a bleed to regulate the pressure it would actually kick on at.
What can I say, I'm a cheap azz!

Quote:

For the alcohol, why not a windshield washer pump or small toy type pump? You don't need that much pressure and another windshield washer bottle would be fine.

Well, I'm going to need something that will build enough pressure to overcome the boost pressure and still have a high enough final pressure to do a decent job of atomizing the alky. That's why I was thinking high pressure fuel pump. The windshield washer bottle might work as long as it will hold enough to allow for a decent ammount of run time between refills. If not, Walmart sells plastic 6 gallon boat gas tanks every day...

Quote:

I was comtemplating the NOS nozzle my first year but went with the cold starts instead. Ran 3 VW cold starts, stock fuel pump and injectors, 18 psi was the max it before I was too lean. Good luck!

Believe it or not, I fueled the CS up to 23 psi with a single cold start injector by drilling the tip of the injector. I got lucky and it actually maintained a decent spray pattern too.
Thanks for the help! right now I think my biggest hangup is doing the math (never was one of my strong points) to figure out alcohol consumption necessary to support 30 psi and translate that into jet size and pump pressure. Also, I need to figure out if nitrous kit fuel solenoids are alcohol compatible.
Tony

[TRRBOJEEP]

I'm not familiar with NOS nozzles, so I can't help you there, but get the 6 gal boat tank! lol I'm using a windshield washer tank for my alky tank, mounted in the engine compartment. It holds just over 2 quarts, which gives me just over 6 minutes of WOT run time. I'm using (1) 40lb/hr injector to supliment an additional 3psi of boost (18psi total) but to go from 18 to 30 you're going to need to turn that thing into an alcoholic! 4sfed4's car runs a bunch of alky and he's running mid 20's boost I believe. He'd be a good one to PM, to help you out on a ballpark amount of alky (flow rate) you might want to shoot for. I don't see why the fuel pump wouldn't work to inject the alky. It sounds like a novel idea actually. Good luck & let us know how it works out for you.

[tonyz2897]

Thanks for the advice!
I was concerned about the windshield washer jug having enough capacity, now I have my answer. I just wonder how excited the tech guys at the strip would get about the boat tank? It'll be awhile before I get started on this. I just got the head back on and I'm trying to get all the bugs worked out while it's still in basically stock trim.
Hopefully 4sfed4 will see this and chime in with some advice. If not, I'll probably PM him before I start collecting the parts to put the setup together.
Thanks Again,
Tony

[tonyz2897]

Just had another idea. The fuel solenoid is going to be the most expensive part of this deal. Everything else I already have or can buy fairly cheap. But, the more I think about it, the more I wonder if a solenoid is really necessary for the alcohol part? Why not just use a check valve instead and have the pressure switch kick the pump on and off via a relay?
Any thoughts?
Tony