I was wondering something. If I were able to fab a intake that went to the front nose of the car with a duct or something would that be good or would it get to much air. Say I'm going 130mph, would all that air being forced into the intake be good???

Does it really need to just be made so that the intake has good fresh air and not ram air? What do you guys think? Would ram air be bad? I'm thinking prob not since a lot of car come with ram air....then only thing is I'm not sure I've ever seen a turbo car with ram air.

STEPHEN

 

Stephen,
Considering all these companies that are making the ducts straight to the turbos. I figure it cant be all that bad. Good question though. FRESH air is good enough I think, kind of depends maybe on where your fresh air inlet is, and what kind of turbo or turbos you have..

Jason
www.jt-import.com

 

Well lets say its twins...stock or hybrid. Really though I dont see why the type of turob matters that much.

Well I'm looking into a design thats going to bring in alot of fresh air and what I'm thinking is that if I'm going say 130mph that air is going to be hittng the filter at a very high rate. I mean it would basically be entering the duct I'm making out of fiberglass and going straight thru the filter and down the intake system. I guess the filter will slow down the air a lot but in effect what would be stopping that from creating more pressure in the system? I guess if there is more air coming in than what the turbo is moving its just going to basically slow down and compress in the intake pipes before the turbo.

What do some of you guys think????

If I'm going 140-150 at a track or something will a ram air system add more pressure to the system or does the motor/turbos move so much air anyway that its just going to get sucked right up. I mean if the air is being sucked into the turbo at 300mph my ram air moving 140 isnt going to do anything except provide more air to take in.

On the flip side though what if I'm cruising at 90 with no boost at all???? How would the ram air affect things then???

Does anyone have any ideas?

Has anyone ever seen and intake that really has a duct system that draws in alot of air and pushes it right into the intake system???

Am I fixing to be a guinee pig???

STEPHEN

 

im already working a system like that.... one to push more cold air into the intake area (fresh air for open air/hot intakes)...and one to push air directly into the intake. If the turbos suck in more air at a higher velocity than the ram air, a venturi type(?) system would work rather nicely.

.....--->..=====\\
.............______\\________
..-->.....| filter-> (| to turbos->
....-->...|________(|_____


If I remember correctly, the higher velocity intake air being pulled in from the turbos will start pulling the additional intake air (slower) from the ram to provide a much colder charge

I could be wrong, but thats one of my ideas that im gonna test. Shouldnt hurt a thing

 

i thought it was a NONO to do CAI and turbo?

 

Well, a cold air intake is fine. That just means your intake is getting not cool cold air, that is a good thing. Now if your refering to ram air where basically the intake is opened up to the outside of the car forcing air in very fast and hard that is what we are trying to find out.

I keep telling myself its prob ok but maybe I should check a few other sources first. For all that might be interested in the (like Black R1) I think I'm going to start a thread in the single turbo section where some of the super guru's hang out lol

STEPHEN

 

I can't think of any reason this would be a problem. It is harder to create a "ram-air" system than it seems because of the aero considerations, but the more cool air the better from the turbo's standpoint. If you make 0.5 psi at high speed, that's less pressure the turbo has to make to meet your boost setting (a good thing).

-Max

 

Was just watchin the import drags on speedvision and the turbo Supra has it's intake up to the headlight wich is removed, so I would call that ram air.

I think what the question should be is: Would forced/ram air "overboost" the turbos more than they can handle?

 

i would have to say that it would only make the comp. wheels more efficient. there would be more air to grab so to say. more of a surplus of air for it to rely on. it might up the psi a little bit because of the fact that more air molecules would be readily available (at higher speeds) for the comp. wheels to move. i think its a great idea.

the problem is that you would have to make a lot of 02 runs. not runs on the dyno, but down a lonesome road. you would have to make adjustments on fuel injection once it (the ram-air duct) reaches its efficiency. that wouldnt be very hard at all, just gotta have 2 people so you can keep your hands and eyes on the right things.

now you must think about something else!!! how do i make it work to its highest efficiency? you would need to look into ducting design and port dynamics (i would think). of course, could just put a tube down there and make it fit, but why not make it work to where it actually pressurizes the intake charge before it gets to the turbo. . . thus making a better more efficient "surplus" of air charge for the tubos to work with.

i think this is a great idea!!!! it would allow the turbos to work easier. not so much sloshing in the compressor wheel. . . maybe with the right design you could make a t78 spool up like an rx-6 or a gt3540 or some other quicker spooling turbo. . . not that the t78 is a bad turbo, just saying that it could be made to spool up faster with something like this. .. possibly. haha.

paul

oh yeah. . . . look at my damn sig. haha