Hi Everybody,

I'm in the planning stages of my AI setup for my 3rd gen Rx-7. My idea is to get added safety with my 300 rwhp setup. I want to use washer fluid as it is around the % meth I want to run. I'll be using the washer fluid tank as well. My question is, does anybody know how much fluid it holds exactly? I want to be able to do a 20 minute track session without running dry. This begs the second question, which is what size nozzle should I run. I'm thinking that if the tank is about 1/2 a gallon then I'd want to run a 2 gallon per hour nozzle assuming full on spray for about 15 minutes. However this is pretty small so maybe my idea isn't even feasible or reasonable. But then again I'm not going for extra power so maybe this is enough spray to reduce the chance of detonation?

I'm also torn between a simple single stage setup or something more advanced like the new Aquamist system. I like the idea of spraying less when less is needed. Any advice is welcome.

 

I would recommend a larger tank, if you have a proper size nozzle the tank from the Rx-7 will not last very long. We developed a trunkmount kit and tank that is 1.5 Gallons. Designed to simplify installation and will almost certainly last more than 20 minutes for your track session. We have these in Vari-Cool Progressive and fixed flow. Just one of many options, you may like the ease of install and great performance they offer.

http://www.coolingmist.com/pagedispl...ey=trunk_mount

 

You will be using between 300-600cc/min. A one-gallon tank should last you a tank full on fuel. Single stage system will use more fluid.

You can have a look at the link below and pick one of those tall and thin tanks, up to 1.5 gallon capacity. The shape of those tank is extremely good to overcome water/methanol surge problems.

http://fluids.flambeau.com/




Hidden tanks can also be position in hard top reach location if you use one of this:
http://fluids.flambeau.com/component...illerspout.jpg

 

a 20 minute track session...

moderate hp level
50/50 mix

as has been posted, you will need to assume a 500 cc/min delivery rate.
that works out to an M8 (that's 8 gph. a gph is 63 cc/min).

having spent 22 seasons road racing i will tell you that your right foot is on the floor most of the time. 8 gph/.3 hours is about 3 gallons. further, since you generally pull one G in both braking and cornering, you'd better have more than that amount available for slosh away from the pickup.

i run a 4 gallon Jaz fuel cell w antislosh foam and i consider that is about the minimum for a 20 minute session. i do run two M10 nozzles w methanol.

i think you need a minimum of one gallon remaining in the tank at the end of your session due to the G's moving the liquid around in your tank.

howard coleman

 

Its also important to point out that our tank was designed so it will always prime. The pump inlet is only 1/2 inch or so from the tank. No matter where you position the tank, the pump is always in the same spot. In addition, it draws from the bottom of the tank and includes a low level float switch to warn you if the fluid is low. The other tank suggested can work (we sell those exact 1 gallon tanks) but its critical to make sure placement of the tank and pump are suitable.

Good luck!

 

Thanks everybody. I'll look at these tank options. I like the thought of dual tanks. This way I could maybe add an auxiliary tank for track use.

As for 500 cc a min, yes I have seen that figure however what happens if I do less? I mean this must be a gray area right, not black and white? I mean is there no benefit to 200 cc/min if 500 is the suggestion? What level of protection could I gain at different levels of injection?

I guess I'm stuck on the fact that I have been doing track sessions for a few years with no AI and that when I add it I could get away with less than 500cc/min and still gain a margin of safety in the interest of keeping my setup simple.

dis1

 

For 300hp, I'm assuming you are only running 10lbs of boost or so. If I were you I'm nor sure I would even bother, but if you want to you could easilly go with an M5 nozzle. It I would say that depending on how big the track is, you will be in boost maybe half the time. You could probably get away with running with the washer tank.