Has anyone tried building a ram air system through the two vents on the stock GTA hood?

I am interested in trying this, but wondering if it is possible keeping the MAF system. Seems it could be done fairly easily with density fuel injection.

Any thoughts?

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Gunmetal 89GTA T-Tops L98
Gettin there's all the fun
Best 60 ft: 1.996'
Best 1/8th mile: 9.02 @ 76.5mph with 60' time of 2.14
Mods: air filter, hypertech chip, 3" exhaust

 

I've pondered this idea too. My only real concern would be the aerodynamics of our cars. I fear the air would just skim over, and not be forced in. I'm no engineer, but thats what has been holding me back. Anyone else know if it would work or not?

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Rob
'86 TA 305 TPI
Gutted MAF
Ported Plenum
TB Bypass

 

I wonder how air even gets to the air filter box, much less through the vents! But you make a valuable point.

 

It would not be a high pressure area but it would be a very good cold air source.

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'89 Formula 383 TPI

 

a much better area is in front of your air-dam below the radiator.
You will have both high pressure and cooler air.

 

The screens in the front vents really dont provide all that much surface area if you were to take the massive amount of surface area away that is taken up by the screens. If they were removed completely that would be better, but I havent looked into if that would work ok or not. Theres a few other problems. You have an 89, so unless you changed the ECM, it still has a MAF sensor. This creates a problem in itself, theres really no space to put it into the intake between the bellows and where an airbox would have to be. You would have to cut the backside of the hood, and seal it with some weatherstripping. There isnt much clearance, but I figure I can gain some cross-sectional area over the stock airbox mailslot. Another problem is water, when it rains you have to make sure it doesnt just all run into your engine.
The worst part of this idea is the vents, the screens are mostly metal and very small holes, and the plastic part of the vents dont really have that much area that they can take air in. Its something that could be done, but theres alot you should account for and I am not sure how much effect, if any, that it would have.

[This message has been edited by madmax (edited February 16, 2001).]

 

I did this to my 88 TA. But I've got a TBI so it may be a tad different - check it out at my site... Under "The Exterior -> Original Hood/Ram Air Project"...

Steve

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Steve's Trans Am Temple

 

it won't work , those vents are there to vent out excess heat , and as we all know hot air rises , so I doubt you could convince it not to rise and just go out some other way