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04-04-06, 06:00 PM
#8
Rebreaking things
Join Date: Jun 2001
Location: 1 foot in Boston 1 in NJ
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Very nice. One thing you might want to do is add a curve to the bottom plate of the IC duct. Right now it goes from the duct opening size to the core size in a straight line that is not parallel to the incoming air stream. This causes the air to separate from the surface and has a material impact on the duct's efficiency. You will notice that the ASP Intercooler duct has a more of a curve to it (I assume for the same reason).
04-04-06, 10:50 PM
#9
Rebreaking things
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Little more info on this subject:
"Air that passes through the grille area will continue in a straight line unless it is forced to do otherwise. So, unless you can influence the air that made its way through the grille to spread out before reaching the radiator, you are wasting surface area.
The Curves Have It
Flowing air has mass and reacts in predictable ways. . . . Air will cling to most surfaces just like water (stick your finger under a faucet of running water for a good illustration). It will follow a curve but separate from the surface if it hits an angle. A radiator box with a flat top that angles down from the top of the radiator to the top of the grille does little good at getting air to cool the top of the radiator--incoming air simply breaks away at the angle where the grille and radiator box meet and keeps moving straight ahead (see Illustration A). But air will follow a top panel that meets the incoming air at the same angle it is traveling and then gently slopes up to the level of the top of the radiator. Additionally, you can create even more flow by using the top and bottom panels to create a venturi and increase air speed in the radiator box. It's the same principle as what's going on in the carburetor throat (see Illustration B)."
http://stockcarracing.com/techarticl..._0509_cooling/
"Air that passes through the grille area will continue in a straight line unless it is forced to do otherwise. So, unless you can influence the air that made its way through the grille to spread out before reaching the radiator, you are wasting surface area.
The Curves Have It
Flowing air has mass and reacts in predictable ways. . . . Air will cling to most surfaces just like water (stick your finger under a faucet of running water for a good illustration). It will follow a curve but separate from the surface if it hits an angle. A radiator box with a flat top that angles down from the top of the radiator to the top of the grille does little good at getting air to cool the top of the radiator--incoming air simply breaks away at the angle where the grille and radiator box meet and keeps moving straight ahead (see Illustration A). But air will follow a top panel that meets the incoming air at the same angle it is traveling and then gently slopes up to the level of the top of the radiator. Additionally, you can create even more flow by using the top and bottom panels to create a venturi and increase air speed in the radiator box. It's the same principle as what's going on in the carburetor throat (see Illustration B)."
http://stockcarracing.com/techarticl..._0509_cooling/
04-05-06, 03:39 AM
#11
Originally Posted by rsa
Very nice however I would add a divider separating the engine intake and IC. You don't want the engine robbing valuable cooling air away from your IC (which could happen at WOT the way it is now). That's what Mazda did when they redesigned the newer front bumper on the 99 sped Fd. It's more efficient for them to have separate intake paths.
Last edited by t-von; 04-05-06 at 03:41 AM.
04-05-06, 04:39 PM
#13
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Join Date: Apr 2001
Location: salt lake, utah, usa
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why would you cut into the frame rail instead of making the ic fit? i'm not a rules expert but you may have trouble with tech inspection if they see that(if you race it). the ducting looks nice though.
08-07-08, 06:04 PM
#14
Very nice however I would add a divider separating the engine intake and IC. You don't want the engine robbing valuable cooling air away from your IC (which could happen at WOT the way it is now). That's what Mazda did when they redesigned the newer front bumper on the 99 sped Fd. It's more efficient for them to have separate intake paths.
10-16-08, 08:31 AM
#19
Senior Member
would this setup not require removing (what i would call, due to lack of a better word lol) the front impact bar? looks as if it has airbag sensors mounted on it, i've seen similar things on all my mates imports (supras, silvia's, 3000gt, skyline they all had it)
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