I saw this photo in another forum.. i never really knew why people in japan did this do the back of their hoods. Finally found out that it's to get rid of heat in the engine bay. it's really a simple mod, especially on the FC stock hood mounts.. a simple peice of aluminum 4"x1" and your done... it simply raises the back of the hood. Tell me what you guys think, cause i am thinking of doing this.



http://page.auctions.yahoo.co.jp/jp/auction/54192410

thats too far i think. mine was a little, it makes the hood flop in the middle



mike

wow, it makes it flop? did you do your like this? and if so, how far did you raise it up? would it be as simple as i described? (use a peice of aluminum?) Thanks Mike



-Markus

its still a tad higher and it still flops, i took out the rubber seal though. i just opened as far as the stock stuff would let me



mike

humm.. i could always make the mounts, try it out.. and if i didnt like it remove them. it's not like i have to cut/mod any part of the car. I just always wonderd why Japanese company's did this with their cars.





AIR HAS TO GO SOMEWHERE! instead of turbulence under the hood, it just escapes... brilliant!



-Markus

Hold on. I feel the need to let some air escape right now..



Ah! that's better.

That is a bad looking FC though...

hahahahhaha.. Hope it was somewhere out in the open, Red T2

hey, look its a carb. https://www.nopistons.com/forums/pub...1047683827.gif

It shouldn't matter if it looks good. Form over function right? I think it would be cool to have adjustable brackets, so on track days, etc. I could have the hood popped up and keep it down during normal use.



Given the air flow diagram I have seen for our cars, the hood popped up like this should as as a cowl induction hood and suck additional air through the opening.

I don't like the way it looks, but if it works, then it's all good.

OK, so from what i'm starting to understand is : With the hood mounted https://www.nopistons.com/forums/pub...1047683591.gif like it is in the back, it would acctually act like a cowl induction hood (because of the air flow on an FC air 'SHOULD' enter the back of the hood.. so in the case would this work?? :



ok, how about this, i'm an n/a guy, and i'm always looking for more AIR



you know the large 3 foot long plastic intake tube on the n/a's? well, tell me if this would work... or maybe i'm just an idiot. Do the hood mod (pop up back like a cowl induction) than mount the AFM (mass air flow sensor) directly to the throttle body.. (i have removed my charcol canister...cruise control... and cold start assist tank. so theres room for the cone filter in that area. make a metal/aluminum PLATE/shield to go under the filter... to protect from exhaust heat... WOULD THIS WORK? or i ask again, am i an idiot



Let me know what you guys think.

- Markus



I'm being serious. would air get into the filter better? being that it's like a cowl unduction hood?

the miatas have something like that



mike

uh, I think the way it works is by letting all the air coming in from the front of the car and underneath the car have a way to exit through the back of the engine compartment.. So it should keep the underhood area cooler,

yes, but would removing the tube that normally goes to the AFM and mounting the AFM directly to the Throttle body hurt anything? it would be somewhat of a short ram intake. And by looking at pictures of the aerodynamic profile of an Rx7 it looks like that area (trailing edge of hood popped up) would acctually act as an intake. (ram air) again, i could always try it out. I was just wondering if there's any benifits of doing so. Mike, any pics of the 'miata' set up?



I am very interesting in doing this. if it doesnt work, put everything back to normal. hummm



-Markus

ARG! dont you people read import magazines! lol I think last month in SCC or super street there was a Maroon FC in there by aerodyne industrys that featured some of there own products and one of them is an adjustable hood prop. It is $30 you should go check out there web site http://www.aerodyne.net Ive talked to some of the people there before and they seemed really nice, Ill see if I cant find a link to the mag article

cowl induction is technology that is older then any of us, including me, lol.



I have said plenty of times in the past that someone should mounth a air filter at

the base of the windshield versus the bullshit cold air set ups of throwing a $20 air filter right in the stock location sitting in the engine bay. Now someone just needs to do it https://www.nopistons.com/forums/pub...IR#>/bigok.gif

I will work on is this weekend. including raising the rear of the hood... i will take pics and post them when i'm done.



I am also going to run the AFM directly to the throttle body with a nice conical filter mounted on the end (prolly will almost hit the fender) BUT i think it will work very nice. I never understodd the reverse hoods on cars. But damn.. all those cars with reversed hood and a carb.. the freaking air goes right in there..! absolutly genius design.



I'll keep you guys posted.



-Markus

for all the people that think this feature will let air OUT of the engine, you are WRONG. this region is a positive pressure differential wrt the engine bay, normal to the windshield wipers. this means AIR comes IN, NOT OUT.



i just had to clairify, afterall, this is where you heater and A/C pull air into the car, the pressure pushes the air in. as a result, the air flow will just circulate within the engine bay, doing little to cool the engine. as for intake, that should work, or you could just drill a big hole above the tire fire wall and pull some air from there. i think because of the turbulance coming around the car and from the air flow from the brake ducts, this should pull in some good air.

well if it doesnt let air out... than it's gotta let air in. you say that that's how the Air/heater gets it air.. which is true... SO i figure, raise the hood (1 -1.5 ") mount the intake there, with a nice cold air box. And see if it yeilds any performance. If it doesnt or if i think it looks stupid i'll just reverse everything. It's not like i'm welding/cutting/ doing anything major..



Like i said. We'll see. I see dont under stand the whole pressure area thing. someone post that aerodynamic profile againe.



-Markus

In the future I will give that aerodyne one a shot, if it doesn't pull air out why the hell do they claim that? I know they have had to have done some R & D

Hello everybody and welcome Japan of the mid '90s. This is old school drift FC style. https://www.nopistons.com/forums/pub...DIR#>/wink.png https://www.nopistons.com/forums/pub...1047683329.gif

exactly... old school drift FC!!! YEAH BABY

Cowl INduction, I dont think anyone thought it let air out.

It sure does let heat out after running your car hard. I can feel the heat coming out easier than before. It's easier than popping the hood. Why yes, me hood is propped up a bit. Not much, just about a half inch or so. The only people that seem to notice are other FC owners.

That is also an old school trick, I remember someone, from back in the day that was hardcore and very knowledgeable, said they had just removed the rubber back there and their oil and water temps dropped over 10degrees F!!! I **think** 13Bace said the same thing too...

how do you raide the hood. do the spacers go under the bracket that connects to the body that is underneath the fender