NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   Cold Air Box (https://www.nopistons.com/2nd-generation-specific-17/cold-air-box-16609/)

booger 05-01-2003 07:16 PM

[QUOTE]A BIGGG waste of time on a N/A.



why would this be a waste of time?? all cars like cool air and perform better with it. https://www.nopistons.com/forums/pub...1047683561.gif

Rob x-7 05-01-2003 09:10 PM

If you do it, go all the way and duct in some fresh air

dont just go sticking some open element air cleaner in the

engine bay and think it works better then the way

Mazda did it which was to draw the air above the radiator support.

Plenty of cool air there, it keeps your radiator cool doesnt it?



Until someone comes up with some dyno testing of a brand new

air cleaner versus a "cold air" set up, I say they are a waste of time.

RX7Aggie 05-01-2003 09:34 PM


Originally Posted by pengaru' date='May 1 2003, 05:17 PM
actually it's questionable how useful the headlight cover really is. You'd be better off with a cowl hood or if you ran ducting down low on the front of the car where the brake ducts and radiator inlet are, the headlight covers are at a negative pressure area, at least at the speed this image represents:



http://pengaru.com/~swivel/cars/rx-7...wSheet-med.jpg

good point, good illustration. still, an insulated cool air box for $26 that isolates engine air from intake air shouldn't hurt, and it will look pretty cool when you pop the hood. personally, i'd wrap mine in heat sheild insulation.



and if you want a head light intake, go RX7.com, they have them for $144, and they look better than mariah

RX7Aggie 05-01-2003 09:37 PM

although those headlight intakes seem like they might actually suck air away from the intake due to the negative pressure differential...

booger 05-02-2003 07:39 AM

thanks for your input rob x7,

I will give it some more thought before I do it. https://www.nopistons.com/forums/pub...#>/biggrin.png

Baldy 05-02-2003 07:57 AM

let me know if I have this right:



so, it's best to leave the filter under the hood, and not in front of the radiator, but it's good to duct air from somewhere else. The best place to duct air from would be the in-front-of-the-radiator area. What about down by the brake duct like the guy on the other forum? It looks like either way a hole will have to be cut to route piping, right? So is it better to cut a hole below the filter area, or in the radiator support? Or is it better to just build a box, ducting air from the stock cold air intake?



For using the stock intake setup, should I remove the black plastic that's above the horns?

ROTARYROCKET7 05-02-2003 10:38 AM

talking about this topic. I have a CorkSport Headlight duct that i purchased a long time ago. Ive never put it on. I have the sandpaper and the paint but havnt got a chance to do it. I am also trying to make a cold airbox. Il post pictures later when i get home(in school). I have one peice made. I just have to make the peice by the upper radiator hose and the bottom peice (which will be harder due to the s4 big mass air sensor and the oval shape of the K&N intake.............and im not mechanic or am good with my hands...but i gues ill show you what i got so far so ya can point and laugh at my car lol





jason r.. https://www.nopistons.com/forums/pub...1047683785.gif

Baldy 05-02-2003 11:51 AM

I saw your pic in another thread. Looks like you're doing good so far, as far as I can tell.

ROTARYROCKET7 05-02-2003 04:42 PM

lol yeah i hope so. ANd yeah i got stickers on my car there MAZDASPEED they give me 100 hp man lol. Here is the latest pic of my engine bay

DJ Blu 05-03-2003 12:35 PM

if you don't care how it looks get a cowl induction hood... its airflow is incredible.



thats your best bet for speed, but its expensive, and ugly


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