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Tell me why this is a bad idea.

Old 03-30-07, 02:07 PM
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Tell me why this is a bad idea.

So having done the cheap-*** intake mod i thought about taking it a step further. Why not put a NACA duct in the hood and switch to cone filters in the air box. I doubt there'd be any "ram air" effect given the turbos but a simple shelf could keep water from dumping into the cones (or a bypass filter) and the air would always be colder than anything else that traveled through the engine bay (as in the cheap *** mod w/ air deflector)

similar body mods are used by the pro drag cars (with no filter of course).

cons:
the look of it? anyone have pictures of something similar on a street car?
sound?
plumbing, cutting, fabbing?
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Old 04-01-07, 11:40 AM
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53 views and no comments, what gives?
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Old 04-01-07, 12:21 PM
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I think you need to explain your idea more indepth and expand on it.
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Old 04-01-07, 12:46 PM
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instead of a panel filter in the airbox fab up some cone filters- you can get them anywhere and they're dirt cheap. cut a hole in the top of the air box and line the edges of the hole with weatherstripping. put a naca duct in the hood and sealed into the airbox

(obviously the duct install would precede cutting the hole in the airbox for fitment reasons)

run a bypass filter on the intake tube in case of rain and maybe put a shelf above the filter for the same reason. I think it would be more functional than the headlight cover vent that seems to be prevalent on 3rd gens.



similar to that
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Old 04-02-07, 07:02 PM
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I think you are spending a lot of time thinking about an idea that is completely unnecessary....our cars are not starving for intake air.
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Old 04-03-07, 12:18 PM
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I disagree, if that were the case there wouldn't be gains from the cheap bastard mod. One of the things i always seem to be coming across regarding single turbo conversions is the "hot-air" intake, this could easily be modified to feed a single cone. Furthermore, people with vented hoods swear up and down that air flow under the oem hood can lower engine temps.
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Old 04-03-07, 12:52 PM
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IMO, I wouldn't hack up the car for this modification, especially if you have the stock headlights. The headlight area is a better source for air on the FD (hence the RE-A lights with the duct built in). However, there are a few front bumpers with NASA style ducts in the front just below where it mates to the hood.
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Old 04-03-07, 01:48 PM
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I think rynberg's point is with an aftermarket intake system air is not a problem. Of course the stock airbox is not up an ideal air intake sytem, what stock box is??

Also with the turbos at a gazillion degrees and the compression of the air a good IC will help 100 times more than a CAI.

This would be a better mod for an NA car.
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Old 04-03-07, 02:28 PM
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Originally Posted by Mahjik
IMO, I wouldn't hack up the car for this modification, especially if you have the stock headlights. The headlight area is a better source for air on the FD (hence the RE-A lights with the duct built in). However, there are a few front bumpers with NASA style ducts in the front just below where it mates to the hood.

I was under the impression that the amemiya style light duct was 95% for show. any idea what bumpers feature NASA (NACA?) ducts? I have pictures of a bunch in hyper-rev but that doesn't do me much good.
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Old 04-03-07, 02:47 PM
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I also agree with rynberg and SPIC... Unless you are at the peak limit of your car and looking for that last couple of horse power that's going to make it or break it during your race, I wouldn't worry so much about it. Its not like most of us on this forum are professional racers who's racing for money.. And I also agree that IC would be more beneficial than the intake... as ultimately, its the IC that lowers the intake temp on turbo charged cars..
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Old 04-03-07, 03:14 PM
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Originally Posted by NissanConvert
I was under the impression that the amemiya style light duct was 95% for show. any idea what bumpers feature NASA (NACA?) ducts? I have pictures of a bunch in hyper-rev but that doesn't do me much good.
If you just bought the kit and did nothing else, yes it would be for show. However, you can duct air straight back into your intake filters/box which is what the RE-A cars did (i.e. the reasoning behind the setup).

I don't remember them off-hand. C-West had one years ago, but I'm not sure if they still sell it. http://www.takakaira.com/ used to have a few listed but I haven't looked through their site in a while.
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Old 04-18-07, 03:59 PM
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I thought it was a good idea but it might increase drag.
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Old 04-18-07, 04:54 PM
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Check your image killer
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Old 04-18-07, 05:06 PM
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Last edited by phoenix7; 04-08-08 at 06:29 PM.
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