Anybody do this yet ? I'm going to repaint the hood and was thinking of
venting it so my after market intercooler(stock location) will function better !

Anyone have pic's ? Please post ASAP !

 

heard of some people doing it...there is someone with a viper hole cut into there hood but I don't have the pics. sorry

 

Not sure if you know Jim O'Brien or not, he's been a big list member for awhile now but recently I found out he sold his car. If you've ever seen pics of his car, its white with 2 blue strips. He had his stock hood done with the louvers in the blue strips so the vents were there but not visually standing out. He said it was a pain in the *** for the body shop to get it right, but they did a great job....Just look around for a shop you know good and talk to them about doing it. It'll take some work and money since the underside of the hood has reinforcement bars on it and must be dealt with when cutting the hood.

Tim Benton

 

it's hard to see in the picture but this car has z3 louvers welded into the stock hood. it looks great from the outside but doesn't look so hot when you open the hood. i'm sure the body shop had a hell of a time putting them in though for the reason tim benton stated. i would just go with an aftermarket hood since it seems you'd be going through more trouble than the cost savings are worth. but if you want to make a unique hood that's be admirable too. good luck.

 

anyone has any experience with the erebuni hood? That is about the only one i am able to get in canada.

puma

 

why dont u just order one from the states then
sure itll cost ya a bit more in tariffs and shipping but what the hell, its not like anyone ever said that it was cheap to mod an rx7

 

Thanks for that pic of the blue 7 above, That's what I kinda was looking for !

Any more would be great !

 

Here is Jim's car. (note he changed the color to this color, and yes he sold it)

 

i'm thinking about molding a vent into the hood too, why was it so hard to do?

and those vents are very small, are they functional?

 

dont get it i almost got one because its only $500 dollars but it sucks
my friend bought it when he painted his car s2000 yellow.
the body shop painted it 3 times and fixing it more times.
ended giving him a headache and the bodyshop,
and he built the car for show. now its in the perfomance shop
and i saw it 3 days ago and it still looks like ****.i mean its not the bodyshop they are good believe me if the cant fix it thats all
the proof i need

 

You mean something like this???

 

that was the one I was talking about

 

tell us more about it cypher, please give some details of how hard it was.

thanks

puma

 

I wish I could take credit for having done the work, but the previous owner has that honor. I will, however, take some detailed pictures and post them and get some info on how it was done and how hard it was from him and let you guys know..

 

I'm curious...and the functional purpose of this vent would be?
Filling the underhood area with a positive pressure cooler air?
Would this then reduce airflow through the radiator and IC?
It's not feeding air into the IC or is plumbed to the intake (or is it)
so I'm not sure from a performance standpoint what benefit this
would be. Or are you guys just after the looks
Help me out here guys.
Ta
Crispy

 

Certain venting is to allow cool air in to the engine compartment in order to cool it better. Other venting is to let hot air out of the engine bay in order to cool the engine as well.

 

i think he was speaking about that specific hood in fact.

i agree with you, i ain't sure about the performance of that hood.

to be fully functional, there should be some sort of reverse trap farther on the hood or at leat, you must remove the rubber at the end of the hood.

 

It would be interesting to see someone do up a hood ala ferrari F-50

 

I see the argument for letting in cooler air but I dunno the pros to this principle are questionable IMO. Firstly the radiator takes airflow through the high pressure nose region and vents to a lower pressure underhood region. Now you are pressurinzing the underhood area with air from the hood vent and the flowpath through the radiator is going to be fighting with airflow from the vent to "fill" the underhood region. A similar argument for the IC. If you look at virtually every other vented hood design all are designed to vent hot air *out* from under the hood as a means of cooling vs allowing cool air into the underhood region using flow through the various cooling devices (IC, radiator) as a motive force to push the hot air out. As an aside these vents were purpose built for ducting air to the front sides (inlets) of intakes and radiators and other things and might be counterproductive to what their intent is, ie yeah you get cool air into the engine bay but at the expense of poorer flow through the radiator (higher coolant temps) and poorer flow through thr IC (higher intake charge temps) Any aerodynamicists...a little help here?
Just a thought
Crispy

 

CrispyRx7 Thanks for the insite ! yes I do have these thoughts

I only want to improve the flow of air going threw the IC !

I have a Pettit air duct and a custom large stock locaton IC.

so when the air goes threw the front of the nose into the duct threw
IC and into the hot engine bay ! I simply want to get that air to
vent out the hood and not stop in the engine bay!

 

I'm going to try this company they have the fiberglass !

I called BMW the said the oem vents for the z3 are plastic !!

anyway check these out http://www.teamprototype.com/teampro...ts/bmw1_01.jpg

 

Hotwheel, I did a thread about this a few days ago and mentioned fiberglass vents. Someone else replied about the differing expansion rates of fiberglass and aluminum(what the hood is made of). They said that when the car warmed up it would crack the vents. I was trying to figure out how to do it, but I've come to the conclusion that the amount of time/work/money it would take to do it, I'm better off hopping onto the mazdaspeed replica hood group buy.

 

Just remove the rear hood seal, in traffic the radiator fan will push out hot air at speed cooling air will enter and cool the rear of the motor and turbos.

 

Julio, won't the air being pushed in, via cowl effect, prevent more air from flowing through the radiator and intercooler?

 

Chris,

I would think the Viper-like hood could be used to feed the intercooler.

Wade