turbojon

First off, I have used the CryO2 system with much success and would recommend it to anyone. Concidering that this is a home made turbo site I would expect more of you guys to figure this system out. Here are a couple of answers to some of your questions:

1. Temp of liquid Co2?: -80 degrees
2. Can Co2 catch on fire?: Hell no! Fire extingishers use Co2.
3. Will the system make power?: Yes the system will make power. It just needs to be used properly. I am running a FMIC and i normally prime the intercooler to prep it for battle. I do recommend that you plumb you intake away from the Co2 vent. My intake is not in the best place, but I use the system correctly and I have seen .5 results from a heat soaked condition at the track.
4)Go to www.designengineering.com and check out the down load section Performance Ford Magazine gained around 25HP from a heat soaked condition and 8 from the base run on a Cosworth.
5. Does cooler fuel make HP?: Yes, and if you do not know why ask your Highschool chemistry teacher.

Here is also something that I found on a Mazda Forum:
I have seen some old posts regarding DEI's CryO2 system, and if it actually adds HP, and how. I am a Mechanical Engineer that actually liked Thermodynamics. To the best of my ability I will describe mathmatically where the HP comes from (what I feel to be true, someone correct me if I am wrong).

First off, CryO2 does not directly inject anything into your engine nor should it harm your engine in any way. It simply cools the air before it enters your engine. Carbon Dioxide (in the liquid form) is injected into a metal "holder" that mounts inside of your stock intake piping. For turbo applications, after the IC and just before the intake manifold would be best (what I might do). It will cool the air at the very end of it's "travel". The same reason for intercoolers, but intercoolers will only cool the air to a certain extent...remember it heats up as it passes through the turbo. The IC just brings the air temp back down after the temp rise at the turbo, (To what degree I do not know). So here is a bit of math.

Mass of air entering engine (in pounds)= (P1*V1)/(R*T1)
where:
P1 = initial pressure of air
V1 = initial volume of air (in cubic feet)
R = gas contant = 53.3 for air
T1 = initial temperature of air

For my application (MSP)
P1 = 14.7+8.0 psi = 22.7 psi = 3269 psf <----you can see why psi = HP
V1 = 2.0L = 0.071 cubic feet
T1 = well.....this is what the CryO2 will change
Remember it will be in degrees R which is degrees F + 460.

The greater the pressure, the lower the temperature, the higher mass of air, the more power. Internal E = C*m*(T2-T1)
where C is another constant for air. T2 (after compression) will be approximately the same (I won't do the math for you because this is getting long), so T2-T1 will be larger with a smaller T1. And with a higher m (mass of air), you get an even higher value. They are all minute changes but add up trust me. I calculated 15-20 extra horses on a computer application I wrote years ago that solves for HP and lets you change any factor you want.


Try it.

87na_rx7

the fuel coller is not a new idea. All my old school draag racers buddies used to do it with a coffecan that had a meatl line coiled inside, they would put that inline with the fuel and when it is time to run they would drop some dry ice in it