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

 

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

 

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?

 

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

 

volume! you need volume!

 

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.

 

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?

 

Totaly not even close to being a good idea, Dom C was right you can move air at 16psi but at what volume?
Kudos for trying to be creative though

 

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

 

If you towed a gas tanker filled with you all the time ... then maybe.

 

You would need a tank big enough to go in a truck bed... Go down to any tire shop and ask to see how a bead blaster works then think about your little airtank you want

 

Going fast is expencive, and by the time you put ANY sort of pump on there it would have been better to get a turbo N02 or Supercharger

 

what about propane wounldnt that work as well. or is that more of an alternate fuel?

 

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.

 

the mass airflow required is huge. good Idea, but from an engineering standpoint just not practical.

 

Propane would be great if you had a diesel

 

Talking in terms of power adders there wondertard And yes C02 would displace any Air the engine could injest

 

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.

 

Not true, some places you gotta pay to use their air pump.

 

dude, it's wotnartd, don't want to be ****, I do like the sound of wondertartd, though.

 

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

 

dislexic sorry lol

 

Yup, the aptly names "leaf blower" mod.

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...

 

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.

 

it was my impresion that Nitrous was an oxidizer not a combustable. And being a oxidizer it with more fuel is a chemical "forced induction"