How well would directly porting compressed air into each of the intake manifold runners work. I think I am going to try to do this so when I push a swith and open the valve I can boost any pressure I set the regulator to. Give me your feedback.

 

Eh, you mean like a leaf blower type dealy but on each runner?

 

Well i was thinking more along the lines of a notrous setup except insead of nitrous run compressed air.

 

Do it with pure oxygen. Dont forget pics.

 

atleast your thinking outside the box. but in compressed air will not work, you could keep up with your engines needs.

 

Not quite sure i follow you?

 

Even for 1/8th mile racing, you cannot fit a tank inside your car which would be the minimum size required to do this.

 

If you were going to plumb each cylinder seperatly, i dont see how you could manage your fuel. Now if you basically shot compressed air (or oxygen) through your throtle body (just like a turbo would do) i think you would have alot better chance of getting the 'shot' tuned

 

problem is, pure o2 is extremely volitile, a back fire or something of the like and you ahve one very big BOOM, i had thought about doing this but the problem is, you'd have to be very accurate metering the pure o2, remeber the air your car normally ingests in 20.947% oxygen, 100% o2, give or take a percent would throw the a/f way off. and require fuel system mods. so metering way down, using nitrous jets, trial and error, and maybe a couple of motors and it would work

 

sounds like you are trying to rig up a ghetto DIY Nitrous kit. Nitrous does what you are saying, it injects more air into the cylinders. I think you are better off getting a cheap nitrous kit. Unless you just want to PLAY with your car. But like someone else mentioned, fuel managment will be difficult.

 

I was thinking about doing this a while ago.. Except im a scuba diver so I get enriched nitrox gas.. I was going to use that but the whole blowing up thing wasnt for me..

 

Don't fool around with the oxygen, nitrous is not combustible until the two Nitrogen Molecules seperate from the oxygen, at high heat, inside your engine. Much safer. Nitrous gives you closer to 33% oxygen by volume, as opposed to the 20.xx% mentioned earlier (though I always thought it was closer to 16%?). So, this is basically what you are looking for, just not as extreme.

 

I didnt know ntrous gave 33%.. Wow, The stuff I breathe underwater has 36% oxygen..

 

The compressed air will blow right out the throttle body.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegunderpressure &raquo;</TD></TR><TR><TD CLASS="quote">Do it with pure oxygen. Dont forget pics. </TD></TR></TABLE>



But like everyone said, you're just re-inventing nitrous oxide. There's a REASON there's two parts nitrogen to one oxygen.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Overblown-Teg &raquo;</TD></TR><TR><TD CLASS="quote">The compressed air will blow right out the throttle body. </TD></TR></TABLE>

Well there is 2 ways to look at that.. If you mix in oxygen with regular air then you are changing the oxygen content in the air.. Or you can make it a sealed system and run the tank pressure into the engine but that would be hard to setup and probably wouldnt last that long..

 

Well here is a couple of my ideas. The basic ideas are to have a bottle of compressed air in the car plumbed from the bottle to under the hood. Once there I plan to have a solenoid to open and close the line between the bottle and the injection point. Now I will explain the individual types of injection I plan and there possible problems.

1. Injection of air into each intake runner of the manifold. This would give me direct port to each of the cylinders ensuring that each cylinder has the same amount of "boost". Some problems that i amy run into would be incorrect air/fuel ratio because of all the sensors i have bypassed.

2. Injection of air into the intake tube right past the filter. This would give the car the ability to use all of the sensors that it normally uses. Some problems here would be the fact that I would not have the fuel capacity to haddle the amount of air, which is where I would need a progammible ECU to lengthen the injector pulse when i open the valve or I could rig a new set of injectors to the underside of the intake manifold and have them only come on when i push the botton.

These are just some of the ideas I have, Feel free to coment on anything.

 

I do not see #1 working without ALOT of research and testing...

As for #2, you would pretty much not be doing anything different then turboing your car. Putting more air into the same size intake pipe - compressed air = boost. Tunning that wouldnt be any different then tuning say a hondata that can read the 'boost' with a map sensor and therefore adding the correct amount of fuel based on the tune.

 

now, are we talking about injecting just plain ol' compressed air or pure oxygen?

 

Just plain compressed air, like you said, O2 whould be to volital and would explode, which is why nitrous...well you get the point you said it before. But yeah I was just planning on injecting just compressed air so it would be the same stuff the car already breaths now, just more of it. Now for the big question, is my stock ECU smart enough to change the air/fuel ratio based on the MAP sensor goign into the positive side of the vacume gauge or will I have to buy a ECU that I can haved tuned?

 

the stock ecu isnt programmed to read positive map values. so you either need uberdata or the like, or something similiar, afc + missing link.