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Custom Ram Intake Think Tank

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focusedrage

20+ Year Contributor
1,053
0
Aug 3, 2002
Laytonsville, Maryland
I want to start a thread where ideas can be shared on how to impliment a better induction system for our cars.

Im sure we can all agree that it sucks sucking in hot under the hood air. I was thinking of some sort of intake in place of the passenger side fog light that would send air to a sealed induction box. that way there would be in effect ram air.

Please go creazy with thougths and pictures.
 
there was someone on here or talk that had the beggining stages of what i wanted from a ram air set up. He cut a whole where his high beam was on the passenger headlight and seeled a peice of abs pipe into it. I will try and explain it better. Where he had the highbeam projector he cut a round whole and put an abs pipe in there so that it would force air into the area where the filter was. The only problem was that it wasnt in a sealed box. I was thinking of doing this when i got my car back but trying to build a sealed box around the filter so that only air from the tube would getted sucked in byt the filter. I will try and find the pic and post it in here.
-zach-
 
yeah i saw that, not exavlty glamourous but effective ha ha, yeh i supose the trick is the sealed box, and prbly insulated from the engine heat
 
All I did was make an intake scoop in the hood and used some thick foam to seal to the hood. The foam pretty much cuts it off from the heat of the motor. I suppose it kinda acts like a ram air once you get going fast enough.

These are a couple of pix.

http://www.dsmtuners.com/gallery/showgallery.php?cat=500&ppuser=8142&perpage=12&sort=1

Also would anyone be interested in braided oil lines for the turbo either from the head or coming from the oil filter assembly. I'm starting a new job at a place that can make any type of custom hosing and I can probably get a deal on them. I've been told 10% over cost for employees. This place also sells every kind of nut, bolt, and fastener among a zillion other products. I'm stoked.
 
Here's one.
 

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^^^^OH DEAR MOTHER OF GOD, I don't even know what to say to that its.......just crazy.

ajin i just checked out those pics that's pretty badass how long did it take you to do that and what where the gains from it.
-zach-
 
Sorry I really cant say, I only have about 100 miles on it since I've got the motor built and running and I'm now dealing with a toasted turbo that was puking out smoke(exhaust) and making the car run real rich.
Plus I did so many mods at one time I don't even know what the car was like before. But, when I get it fixed I might try to put my stock hood back on and do some testing at the strip.
 
told you i would get the pics, the guy somehow found a way to use the stock bulb turn cover so in bad weather he could close it and no water would get in. Regardless i think this could be a good start to a true ram air set up. On to the pics.
 

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My setup isn't sexy at all, but it does allow outside air in, and could be used as a ram air intake.

I simply used a couple 2.5" painted PVC 45deg. couplings and some hose. Put one end on the very bottom right of the radiator with the opening pointing strieght to the front and the other conected to a plate that seperated the air filter from the engine. At speed, this allows cool air to run right to the filter. The air has to travel a couple feet up, which seems to keep out the rain, but does let in a lot of dust.

Alan
 
Originally posted by 98eclipseRS
number two

That's kind of a slick little setup. I put mine on the hood because I have another ride to drive during crappy weather. I still might have to modify it because here in Nebraska the weather can change at any moment.
 
Originally posted by 98eclipseRS
number two

That's kind of a slick little setup. I put mine on the hood because I have another ride to drive during crappy weather. I still might have to modify it because here in Nebraska the weather can change at any moment.
 
these are some awsoem setups, although tallen, its a bit extreme, awsome though.

i supose when i get my ic, ill just put in the old air box with a hole in the bottom so a pipe can go to the prot where the stock ic was.

below is a pic i whipped up probly would require some custom stuff
 
cold air does not work, the turbo just heats the air back up waste of time.

351cold_air.JPG
 
My setup isn't sexy at all, but it does allow outside air in, and could be used as a ram air intake.

I simply used a couple 2.5" painted PVC 45deg. couplings and some hose. Put one end on the very bottom right of the radiator with the opening pointing strieght to the front and the other conected to a plate that seperated the air filter from the engine. At speed, this allows cool air to run right to the filter. The air has to travel a couple feet up, which seems to keep out the rain, but does let in a lot of dust.

Alan
 
jdmawd, how can you say that, simple logic proves otherwise

i dont belive the turbo will heat any air to a specific temperature, the turbo adds energy in the form of pressure and heat, and this is a finite amount, so you decrease the temp of the incoming air you also decrese the temp of the exiting air
 
Originally posted by focusedrage
jdmawd, how can you say that, simple logic proves otherwise


it was a joke bro dont you see the pic of my CAI in the exact same post
 
Originally posted by jdmawd
cold air does not work, the turbo just heats the air back up waste of time.


I really hope you were joking when you said that. The turbo will add heat to it yes, but it will add heat whether its 80 degree air, or 150 degree air. If the turbo adds another 60(random number off the top of my head) degrees to the intake air temp, would you prefer 140 degree air, or 210 degree air? I saw substantial gains in airflow and power according to my datalogger when I simply added a blockoff plate to my K&N filter to keep the high temp engine bay air away from it.

Ram air on the other hand, is a lot harder to get to work. But just the benefits from getting a good supply of cool air is worth it.

Brad
 
haha its funny because jdmawd just said it was a joke.
and check out my setup in my gallery
i made it out of a peice of sheetmetal....works awesome and scoops air from right unerneath the bumper into the filter.....planing on redoing it tho...
 
I have always planned on doing this when I get my FMIC. I think the best gain will be made from the ram air and not the cooler intake charge. Although the cooler intake charge will keep your intercooler from heat soaking as fast, it should only change the post intercooler air temperature a few degrees.

The ram air affect should work really well in theory!!

Let me explain:

My plan was to use the 2G stock sidemount opening to collect the air and distribute it to a closed air tight box that is located in the side mount area. Similar to the discriptions above. With this size opening you should get the following pressures:

30 mph = 0.25psi
60 mph = 0.75 psi
90 mph = 1.5 psi

But watch how much this affects your turbo efficiency: :D

Pressure ratio = PR

Say you are running 18 psi with a 16G turbo
intercooler restriction 1 psi
intake pressure before ram air = -0.5 psi
intake pressure at 90 mph after ram air = 1.5 - .5 psi = 1 psi
atm = 14.5

PR (before ram air) = (18+1+14.5)/(14.5 - 0.5) = 2.4 PR

PR (after ram air) = (18+1+14.5)/(14.5 + 1) = 2.16 PR

That is a pretty big difference.

On a 16G without the ram air you are out of the high efficiency island and the maximum shaft speed is at approx 135000 rpms.

To flow the same amount of air, with ram air you are now IN the efficient island AND shaft speed only needs to be at approx 120000 rpms TO FLOW THE SAME AMOUNT OF AIR !!!!! :D

Remember shaft speed is a good indicator of how hard your turbo is working and how much you are choking off the engine by running the boost.

This should be a great mod for highway driving.
 
nice man, and jdmawd, yeah i was wondering why you would say that what with the pic, i think this is the second time you have used that joke LOL, no prblems

i wonder what the turbulence problems would be in a box like you discribed, i think the trick with ram air is to have a decese in diameter over the length of the system, a horn almost
 
Originally posted by focusedrage

i think the trick with ram air is to have a decese in diameter over the length of the system, a horn almost

Actualy for the same size opening, it would be better to have just the opposite. If the box is wider than the opening it will trap air better and wont affect pressure either. This also works for getting more air to the FMIC.
 
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