compressed air vs Turbo
12-03-05, 12:23 PM
#1
compressed air vs Turbo
ive been developing an idea, sence the prices of a turbo kit for a 1988 rx7 gxl or any engine for that reason is extreamly expensive...
what if you were just to inject compress air @ 3700 rpm(or whenever 6ports open)
compress air @ lets say 16psi (Mas air flow only sees 17 right?)
so lets say 14-16psi @ 3700rpm
with a air tank lets say 12 - 15L
or somthing that will last but isnt to large.
and a pressure regulator to keep it at 14-16psi..
connect the hose to the air intake....
this would be fairly cheaper then a turbo
but with slightly more weight
and filling the tank is free..@gas stations....
what u guys think? just a wierd idea...
kinda like
http://www.halfbakery.com/idea/pre-c...20supercharger
what if you were just to inject compress air @ 3700 rpm(or whenever 6ports open)
compress air @ lets say 16psi (Mas air flow only sees 17 right?)
so lets say 14-16psi @ 3700rpm
with a air tank lets say 12 - 15L
or somthing that will last but isnt to large.
and a pressure regulator to keep it at 14-16psi..
connect the hose to the air intake....
this would be fairly cheaper then a turbo
but with slightly more weight
and filling the tank is free..@gas stations....
what u guys think? just a wierd idea...
kinda like
http://www.halfbakery.com/idea/pre-c...20supercharger
Last edited by 88durel; 12-03-05 at 12:52 PM.
12-03-05, 12:42 PM
#2
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You need alot of volume as well. If you just blow 15 psi through a hose the size of a straw you're not gonna net **** for power. . probably a decrease. . haha there are two components. . pressure and volume
12-03-05, 12:43 PM
#3
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Sweet idea. I dont know what else to say LOL I'm not an expert in Automotive Engines. Only thing I can think of is can like a hose handle the compressed air and will a hose holding compressed air give gains in performance?
12-03-05, 12:45 PM
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the tank would run out way to fast. i would think that even though your injecting 16 psi of pressure into the intake your not necessarily presurizing the intake with 16psi of presure b/c most of the air is just getting sucked into the motor. but thats just me.
p.s. must be a Saskatchewan think lol
p.s. must be a Saskatchewan think lol
12-03-05, 12:53 PM
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good thinking, but you have to remember that psi is pounds per square inch. The volume at the valve is much smaller than that of your intake, or your engine. It could work, but you would need to run about 60-70 psi to make any kind of difference. The biggest tank you could reasonably get in your car is an 8 gallon, and most tanks will only hold 110 psi. Anyone who uses pneumatic tools can tell you 8 gallons of 110 psi goes quick, so you would also need a compressor in the car.
Another weird idea that may be more practical for you is to get a nitrous wet shot kit with the RPM pill. Set the pill so that when the system is armed, it is on between just above your idle, and just below your normal cruising rpm. Put an arming switch in a conveniant location so you can turn it on and off when you need. Then take your tank to any sporting goods store that sells paintball crap and have the tank filled with C02. It's only $4 to fill a tank, and it's safer because it isn't as cold as nitrous. This can help fix a weaker low end.
Another weird idea that may be more practical for you is to get a nitrous wet shot kit with the RPM pill. Set the pill so that when the system is armed, it is on between just above your idle, and just below your normal cruising rpm. Put an arming switch in a conveniant location so you can turn it on and off when you need. Then take your tank to any sporting goods store that sells paintball crap and have the tank filled with C02. It's only $4 to fill a tank, and it's safer because it isn't as cold as nitrous. This can help fix a weaker low end.
12-03-05, 12:59 PM
#7
saskatchewan thing? whats that sapposed to mean? lol
if i installed a toggle switch.... i could turn on the rpm activation switch only when racing... that way the car runs normal when im not racing... flick the switch @ the light and i have pressurized intake @3700 rpm
im only considering the concept... would it work?
if the intake wouldnt be pressureized to 16psi i could play with it a little, i wouldnt go much over 20psi....(intake volume) i sappose running the hose @ 80 psi would be sufficiant
keeping in mind i only need it to work for what, 13 seconds ( not much past 140km/hr) just cuz im not sure, but whats the point if after 100km/hr or 60mp/hr im so far ahead...
Basically its just a turbocharger, but instead or a turbo feeding the air generated from exhaust, ill just have a tank of stored air(energy) that i can mimic a turbo just for the race.
P.S. Im a Broke collage student making -60,000 dollars a year...
can really afford turbo, and cant find enought time to go threw junk yards looking for a turbo that will work,.... but maybe in 5 years... but for now
what u think about compressed air?
if i installed a toggle switch.... i could turn on the rpm activation switch only when racing... that way the car runs normal when im not racing... flick the switch @ the light and i have pressurized intake @3700 rpm
im only considering the concept... would it work?
if the intake wouldnt be pressureized to 16psi i could play with it a little, i wouldnt go much over 20psi....(intake volume) i sappose running the hose @ 80 psi would be sufficiant
keeping in mind i only need it to work for what, 13 seconds ( not much past 140km/hr) just cuz im not sure, but whats the point if after 100km/hr or 60mp/hr im so far ahead...
Basically its just a turbocharger, but instead or a turbo feeding the air generated from exhaust, ill just have a tank of stored air(energy) that i can mimic a turbo just for the race.
P.S. Im a Broke collage student making -60,000 dollars a year...
can really afford turbo, and cant find enought time to go threw junk yards looking for a turbo that will work,.... but maybe in 5 years... but for now
what u think about compressed air?
Last edited by 88durel; 12-03-05 at 01:01 PM.
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12-03-05, 01:02 PM
#9
you can buy a setup or make a setup to recharge the tank using breaking power, (compressers are noisy and rob power.... but then again i sappose the 15" cerwin vega stroker pro probably robs power too....
Co2 is liquid,... and i could probably hold more in a tank
oxygen is free....
propane ----
nitros is expensive
turbos are expensive
superchargers are expensive
Co2 is liquid,... and i could probably hold more in a tank
oxygen is free....
propane ----
nitros is expensive
turbos are expensive
superchargers are expensive
Last edited by 88durel; 12-03-05 at 01:06 PM.
12-03-05, 01:17 PM
#14
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Good theory, but you need pressure and volume. Imagine cutting an 8 gallon air tank open with a hole the same size as the turbo. Now imagine regualting the air on something that big, and now imagine all that air leaving really, really fast.
An air compressor only works for emissions, sorry.
However, I've heard of propane being used as a power adder, most notably on diesles. And I am pretty sure CO2 is going to take power away, as carbon dioxide suffocates things. Nitrous is actually N2O, the nitrogen keeps the oxygen stable without subtracting any power, nitrogen makes up ~70-80% of the air we breathe, it's just there, it's filler and stabilizer. If you had O2, you would die, the car would blow up and you'd die. Turbo chargers and superchargers are forced induction, not some other gas.
An air compressor only works for emissions, sorry.
However, I've heard of propane being used as a power adder, most notably on diesles. And I am pretty sure CO2 is going to take power away, as carbon dioxide suffocates things. Nitrous is actually N2O, the nitrogen keeps the oxygen stable without subtracting any power, nitrogen makes up ~70-80% of the air we breathe, it's just there, it's filler and stabilizer. If you had O2, you would die, the car would blow up and you'd die. Turbo chargers and superchargers are forced induction, not some other gas.
Last edited by JSmith0101; 12-03-05 at 01:24 PM.
12-03-05, 01:33 PM
#18
Ok first of all.... The compressed air thing would work, but I couldn't see it working for more than few seconds before ran out of air, due to amount of volume need to make any real power.
CO2 thing would not work.... C02 is used in some types of fire extinguishers. Only way CO2 could be used increase power is too cool the intake charge and even then it wouldn't any real power increases. It works pretty good with intercoolers though.
CO2 thing would not work.... C02 is used in some types of fire extinguishers. Only way CO2 could be used increase power is too cool the intake charge and even then it wouldn't any real power increases. It works pretty good with intercoolers though.
12-03-05, 01:39 PM
#20
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Originally Posted by AFgreasemnky
Talking in terms of power adders there wondertard And yes C02 would displace any Air the engine could injest
12-03-05, 01:39 PM
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No way, honestly do you think this is the first time someone has thought of this? It is in no way practical, and for the $$$ and time you would be better off getting the "E-charger" in the back of magizens! haha
12-03-05, 01:50 PM
#23
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Originally Posted by AFgreasemnky
No way, honestly do you think this is the first time someone has thought of this? It is in no way practical, and for the $$$ and time you would be better off getting the "E-charger" in the back of magizens! haha
Nitrous is compressed because it's super combustable, but not horribly unstable, like pure O2. It doesn't require huge amounts constantly being forced.
Although, I am a bit interested in what propane could do, perhaps more from an efficiency side. It would probably put too much compression in the engine and crap a seal.... unless you leaned it out some, perhaps?... hmm...
12-03-05, 01:54 PM
#24
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WAIT! I just remebered something! When I used to work at my phone company, I helped bury cable and we had a rig for going under roads. It used 120 PSI off of one of those huge air compressors that only took up the better half of our flatbed.... it also was put onto the truck using a forklift... so it might kill your 1/4 mile time a little bit.