a well designed ram air intake would be more effective than a well designed CAI only... ram would 'ram' air into the intake tube; like in the '01 (or '02 maybe??) trans am's it gets collected at the nose of the hood and 'rammed' into the intake.
opening your hood a bit (say popping it but keeping it latched) would bring cooler air inside the bonnet but not really do much to keep it from mixing with hot air unless you directed it somehow into the intake tube. and theres more effectiev methods than drawing through a slight;y opened hood.... probably hurt your drag coeficcient enough to upset the gains.
hope i helped.
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reminiscing of my LC...
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Originally posted by solo-baric
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Excellence in all we do. hopefully i pissed him off some more and that would be excellent.
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well it would reduce the temperature of the air in your engine bay,
but at the expense of the aerodynamics of your car.
the added drag would probably offset any performance gains.
some cars do this at the drag strip but i think they probably have the power to over come the drag.
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"Living my life about 20 seconds at a time, Nothing else matters!"
A better way to do ram-air is to install an AEM CAI, then seal the area where the filter is mounted. On my car, the CAI filter mounts right behind my driver's side fog light. I plan on sealing the inner fenderwell splash guard with fiberglass, while still keeping it removable to allow cleaning of the filter. Then, I'm going to remove the foglights and use some black-painted aluminum mesh to cover the fog light holes and protect the filter from large bugs and rocks. I'm not worried about water, 'cause I live in Vegas and have a "winter beater" for driving in the rain. This hope is to eliminate vacuum from the intake at speed. Most people don't realize, but ram-air won't create positive pressure in the intake, it only eliminates the vacuum, which allows the engine to work less and frees up power. I did several tests with my '97 T/A WS6 and never got any positive pressure in the intake. I did notice that there was almost no vacuum at full throttle at speeds over 50mph, though.
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Aaron Britt
'06 350Z (Farking lemon)
'06 Elantra GLS hatch
'87 Nissan Hardbody - The "Mud Mobile" (448,000 miles and still counting)
'02 Derbi GP1 scooter
Originally posted by xgkraverx
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what if someone was to pop the hood a bit in order to get some air into the engine bay, would that help?
i wont do it, like i said its a crazy idea but in theory wouldnt it help?
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They already have that. they are little spacers that you buy that keep the hood partially open to allow warm air to escape. It keeps the part of the hood nearest the window open a bit. This way the cool air coming into the engine bay pushes the warm air out the opening.
I remember there was a dyno posted around here about that. A ram air seems to give just under CAI gains at lower rpms, but at higher rpms the ram air is actually slightly better then a CAI. Just understand that the ram air effect is pretty minimal and less then highway speeds. It simply gives you colder air if you have a WAI rather then a CAI at low speeds. The "ram" effect only comes into play at higher speeds because it will enter the intake faster because its being pushed and pulled, rather then just pulled like a CAI.
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<b><i>New England Midnight Racing Car Club
after my accident with the sidewalk lol, my hood was a little up so i had them put it down but not all the way, i made them leave an opening and you can actually see some of my battery from the side (not dangerous, its not that big and can only be seen from an angle)
i actually did notice my car is peppier but since its an auto, i can't tell you if i really felt a diffrence, but its cool
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2003 Mitsubishi Montero Sport XLS
1991 Ford Taurus aka "shaggin wagon"
I have a RAM Air setup...my filter is the Weapon R-Dragon..with the RAM AIR attachement on it. What this is, is a 3" attachment that screws into the top of the filter allowing for a 3" flex hose to be fastened to it with a hose clamp. I then routed the flex hose with a "scoupe" through the radiator support sheet metal, that I made a hole in, and mounted the "scoupe" right in front of my grille below my driver side fog light. (I have the evo body kit) I felt a hell of a difference in pull after I did this. The only thing now is I want to get better intake tubing, like the injen, that will but my filter under my battery mount so that I can get it out of my hot engine bay..then I will seal it with the Weapon R Dragon Heat Shield, which encloses the filter up to the attachment. Then I will definetly see positive pressure!!
If anyone wants a better explanation..just email me!!
Nismo and I will be prototyping a front mount CAI it will be a rectangle that is about 14'' long X 7'' high X 2.5-3'' tall. It will use certain metal shaping bends to chanel the air flow into the mandrel bend pipe, then it will feed through an inline filter and then go into your TB.
I will keep everyone updated on the progress and will have pics soon.
To update that situation, I'm currently playing around with some designs in AutoCad, on different filter type intakes. I'm going to work on not only front mount cold air design but others as well (including a hood scoupe type, with a top feeding intake).
The fusion of muscle car era technology with today's imports is interesting to me, so I wanna see how to make an effective ram air type application.
So far i was knocking around the idea of creating it outa very thin steel, or something similar that can be welded/tacked together.
However, I dunno if we're going to try it first on his nissan wagon, or the tib...Im' hoping on the wagon, just incase! But we will be building one for the tib, and I'm going to look into one for my altima, however most tests on the Ka24de motor indicate that a CAI, even a home made, will perform better then the ram air.
We'll keep everyone posted
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Not Hyundai Owner - Just a fan and a friend of a 03 Tib owner
Ace Garage Mantra:
Remember, finesse is spelled F-O-R-C-E
1994 Nissan Altima 2.4....far from Nismo, but quite the 'sleeper' (160 FWHP and trq with a drop in K+N on Leffler's Dyno)...
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