has anyone ever tried spooling a small turbo with some form of compressed gas?
i was fooling around with it a couple years ago until i saw the cryoturbo from dei at sema i thought id just wait for it to come out but i kinda have an iitch to try it out again any thoughts?

 

Yeah man you shouls do it. I saw that about a few months, its awsome. It would basically eliminate turbo lag, which means you could run a huge turbo on your civic or teg. Can you imagine having a GT42R turbo being spooled at like 2500 or 3000 rmp's on your little 4 cylinder. That would be awsome!!!

 

i dont think there would be enough pressure to spool somthing huge, the compressed gas would never be able to create as much cfm as your exaust, but the pressure and speed of the gas coming out of a nozzle pointed at the middle of the turbine blades should be enough to spin it mabey 5 to 10 psi? i have an old t3 in my garage i'll have to play with

 

couldn't you use normal compressed air and a compressor with a higher psi rating, you should be able to get a bigger compressor and buy a regulator. You could tune the regulator to the proper psi. Then you could some how set up a trigger so that the compressor is only on until the turbo is spooled up. Not sure if this would work, just trying to brain storm with you. What do you think?

 

this is to completly eliminate exaust gasses passing through the turbine, to be able to spin the turbo fast enough i believe that at least 1000 psi is needed. that should provide enough pressure(velocity at the blades) for a proper spool. the only problem i've encountered is freezeing or ice build up(when compressed co2 meets moisture in the air it freezes it instantly. other gas options?

 

i would think spooling a big turbo before it wants isnt going to work because theres going to be a point at wich it will be fighting the exhaust, almost trying to pull the gasses out of the motor.

Not to mention the resistance from building boost pressure.

 

you dont understand, the turbo will not be connected to the exaust instead when you activate the solinoid between the tank and the nozzle the gas flows out of the nozzle and spins the turbine, 100ps1 of compressed air got me 1lb of boost from ra .43/.48 t3 on my 90 accord havent tryed with higher pressurs yet(co2 nitrogen)
still thrying to decide which compressed gas to use, the only problem i see with using co2 is the possibility oftoo much frost building inside the tubine housing thus my search for a diferent gas has begun, and please remember that this is for small turbos only, if i can get 10lbs of boost i'll be very happy but i am probably setting my goals too low

 

So, your trying to make boost, like a supercharger, without the drag?

What benefits are you going for here? What are you going to use to keep that sucker spinning for a period of time.

Or are you just playing around?

 

just playin around, too much spare time, im not looking to spin it all the time, full throttle switc or wheel mounted switch. i havent even thought about fuel compensation, the last progress i made was about a year ago just for ***** and giggles i drilled a hole in the turbine housing so my nozzle would be placed about .25 in away from the turbine blades, i used a 20oz co2 tank from my paintball gun, put a ball valve on the end with a few feet of copper refrigerant line plugged into my nozzle when i cracked the valve open all hell broke loose, it sounded like it was at full spool almost instantly(granted there was no pressure being built, it was just blowing air across my living room). one 20oz tank was enough to run it for about a minute so i think there will be plenty of "shots" in a commonly available 20lb, tank the only problem was the frost, the ball valve was too cold to touch after about 15 seconds and the copper lines turned white. my only solution was to wrap the copper lines around the catylitic converter to generate enough heat in the lines to calm the insta-freeze effect of the gas as it hits the open atmosphere(bonus, this should also create higher line pressures and increase the gas's velocity as it exits the nozzle). i never got that far, after seeing how moch frost was building up i just set the project aside
time to pick it up again
next question.....has anyone used the cryo chargers or intercooler sprayers from dei, is so, is there any problems with the solinoid freezing up?

thanks

 

you need more than high pressure. you need high volume flow.