If all a turbo does is create air pressure....why cant an air tank do the same thing?

[nikon]

Ok wierd idea, me and my friends have been thinking of testing it out on one of my friends 86' 300zx.....ok so a turbo creates pressure from exhaust and forces it into the intake manifold...turbos are expensive because of precise machining and such....turbos also have turbo lag....an air tank doesnt...when the throttle body plate closes the turbo stops spinning (unless blowoff valve)....and air tank wont do this...it would not take a big tank...15lbs or so..maybee even smaller for the track..pump it up with a electric compressor....outside car....and use as a turbo...10psi...would last a while...has anyone ever thought of this or has it even been done before and if so does it work??....the only concern I have is the volume of air required(ya I know I just contridicted my previous sentence)...sure its only 10psi but your engine really sucks that air...and the setting on the tank may have to be higher to get the actual 10 psi..say maybee 100-120psi....what most tank "redline" at.....so gimme your thoughts on this please...anyone...im posting this in Turbos and in General Tech to get a few more responses

[lord_gufi]

first of all air tanks are dumb because by the time they stop airing up a tire is because the tirepressure and the tank pressure are the same so its a wild card man who knows you may endup with the car vaccumeing the air tank

[Formulao96]

LOL try to fill the air tank with nitrous. That will work a little better.

[navyblue2000]

nitrous?

meh, pure o2 will do fine...nothing like glowing red manifolds ;)

[BillyCobin]

I would think that your two biggest problems would be volume and regulating pressure. I would guess that in order to fit the volume of air that you need inside the car somewhere, it would have to be under a lot of pressure. So now if you have 100 psi in the tank, you need to regulate it down to whatever you want running into the engine.

You would also have to run high pressure hose up to the throtle body from where ever the tank is mounted. Then ya need some way to switch between an intake and the tank, or an one way valve on the intake or something.

Also to hold that kind of pressure and volume of air, the tank would be pretty heavy, so that will reduece the gains.

One positive is that you might be able to run higher boost than a traditional forced induction setup. As all that air that is compressed at 100psi in the tank is shot into the engine at 10psi, it should cool down a bit.

There are people working on entire engines that only run on compressed air. http://www.bellwetherinteractive.com...echnology.html

I read an article in Popular Mechanics almost a year ago now about the Ford "Tonka" truck, I think we have discussed it on here before, at least in passing. It uses two large hydralic cylinders, and regenerative braking to compress one. So when you would hit the brakes, it would compress in one of the tanks, something like a 1000psi. When you hit the gas from a stop, it would open the cylinder, and would be an instant 200hp/tq that would get the truck up to 30mph, at which point the engine took over. Now I don't think something like this could be used inline with the engine, but if you had some larger tanks, it would be a wicked way to get low low ETs, and retain a streetable high MPG vehicle.

In the end I think you are going to end up paying as much, or more, for a compressed air setup as you would for a traditional forced induction setup. With the condition that it would be a one-run-at-a-time setup.

[nikon]

I thought of o2 :D ...but then I woke up...but you are right about the weight of the tank...however if it is only a short run...I dont think there will be a problem...I drew a diagram...Ill scan it and post it tonight when I get off of work....then tell me what you think

[MustangEater8251]

wonder if you could jsut use a regular air compressor tank you know for air tools, already has a compressor in it.

i think you should get the big blue at Walmart that is about 4 feet tall and lay it across yor back seat and put a huge NOS sticker on it. With lines leading to your intake, now that would freak a person out. [img]smile.gif[/img]

[3.4 slow to go]

yeah, this is the new, ultra secret 200lb bottle. lasts forever but costs a kidney to fill 'er up [img]graemlins/rofl.gif[/img]

[99BlueSuperSix]

LMFAO, now this topic made me laugh so hard I fell out of my chair!!! Great way to end the day... Good Joke Guys!

[img]graemlins/rofl.gif[/img] [img]graemlins/rofl.gif[/img] [img]graemlins/rofl.gif[/img] [img]graemlins/rofl.gif[/img]

[Tyler]

sure PSI wont be a problem.. have you ever thought about CFM? it wont be able to handle the topend. it'll implode!!! heh

[nova]

<blockquote>quote:</font><hr>Originally posted by navyblue2000:
nitrous?

meh, pure o2 will do fine...nothing like glowing red manifolds ;) <hr></blockquote>

Or you could pass 80% Hydrogen Peroxide across a catalyst screen and inject that into your intake. That would create an approximately 1500-1800 degree mixture of water and o2.

Hydrogen peroxide is one of the oxidizers used in some rockets.

[nikon]

<blockquote>quote:</font><hr>Originally posted by MustangEater8251:
wonder if you could jsut use a regular air compressor tank you know for air tools, already has a compressor in it.

i think you should get the big blue at Walmart that is about 4 feet tall and lay it across yor back seat and put a huge NOS sticker on it. With lines leading to your intake, now that would freak a person out. [img]smile.gif[/img] <hr></blockquote>


what I was planning on using
;)

I will get this to work....and yes I did think of CFM...but this is also the reason im trying this on an 86' 300zx :D :D

[Kidinthehall2001]

screw the ATI, i want this [img]graemlins/rofl.gif[/img] [img]graemlins/rofl.gif[/img]

[strobhen]

No, that will not work...

Think of the volumes we are working with here...

Most compressors build up to 120 psi at 5-12 cfm

Your car is going to flow more like 4-500 cfm...

Even our engine would empty out a tank rather quickly -- quickly enough that the extra weight wouldn't be worth it.

[mike malloy]

this is the way i see it. your car is already going to suck in the neccessary air it needs to operate through the air intake. why not just stick a hose in there and shove some more air in there.. everyone is always trying to be so proper, this is crazy, i say go for it.

hell me and my friends use to have a 88 reliant k car and we had a hose running from the carb to the inside of the car and we would spray starter fluid in he hose while the car was driving down the street :D

[ October 01, 2002: Message edited by: mike malloy ]

[ October 01, 2002: Message edited by: mike malloy ]</p>