Does anyone have an idea which ventilated hoods have the most ventilation, whether fiberglass or carbon fiber that also keeps as much water out of the engine bay???

I hope no one has beaten this on to death...

 

its kinda a +1/-1 situation...i have never found a hood that serves both purposes. if it has great ventilation then water pours into it. if water has a hard time entering it, good chance its not ventilated very well...

just find one that looks nice and find other ways to provide ventilation to the bay. there's always air ducts that can be put in many places

 

That **** ugly(imo) Scoot hood is supposed to be the best for lowering underhood temps. If you can bare to stand that tumor on your car, I'd say go with that. It will let water in, but you can get water gaurds that will help keep it off your engine.

Both CF and FG are insulators, I don't think either of them make a difference with cooling in that respect.

 

As far as keeping water out of the engine bay, i'm sure the FEED hood does a fine job compared to most vented hoods. Im not speaking from experience though

Feed hood https://www.rx7club.com/shineautoproject-161/fd3s-feed-hood-pics-570048/

 

+1

i was going to sudgest the feed hood because its my personal favorite, but i had no picts. the feed hood also has a small lip on the window side that acks like a rain gaurd

 

though the FEED would logically let less water in, it seems like the water it does let in would be in the worst spot. back of the engine bay right over the IM and most of the wiring, and the ignition.

I know that you can get rain gaurds for the FEED hood though.

 

If air can get in, water most certainly can. For the most part, water in the engine bay is not an issue. Where it can be a problem is if you have exposed wires (which you shouldn't have regardless if water is an issue or not).

If you park your car outside, then it would be good to get rain guards to use while its parked. However while in motion, its not an issue. Many people with vented hoods drive their cars in the rain without having problems.

 

I like the RE-A AD9 hood or its replicas the N1 and the newer Seibon (which I have)

 

I always thought it would be interesting to develop a vented hood that uses a system similar to the vacuum operated cowl hoods seen on 70's Chevelles (probably using electronics rather than vacuum, though). Where the vents would automatically close when the car is not in use, and open up while driving.

-Rob

 

Hey guys I appreciate it a lot. You all raise very good points in things that I need to consider. By the way Saxyman990 that is a good idea, it would definitely be cool to see and in return very expensive if ever massed produced. All in all I think I'm going with the scoot style hood I have a setup in mind that would make it gorgeous if everything where to go as planned.


-James

 

i have the scoot hood...it works well...but when it rains water pours in like crazy

 

i feel your pain brother. i have to use alum. foil and make a shield with it when it drizzles. i keep my car in the garage tho.

 

Oun,

Nice car you got there.

What front bumper is that?

 

its the Origin body kit and carbon wing oh yea and origin turn signals too. all the Origin stuff fit great. pre drilled holes and everything

 

Just to comment. The scoot hood ugly? What are you smoking crack? That hood is bad ***, looks like something from an Aliens movie!

 

I was thinking or something yesterday at work while i stared at a few jets taking off on the runway....


****
What if you could have the sleek look of a stock hood... and the ventelation of a vented hood?


Aircraft morph the wings cross section to provide more or less lift at different air speeds ie. Flaps.


Well what if you had vents that could open or close depending on weather/temperature/speed.


What im saying is that you could have a cut out section in the hood that can be raised to provide low pressure above the vent and drawing out warm engine bay air. Then when parked you could lower the vent so the hood is flush again.


The perimeter of the vent would simply look like two body panels meeting. Just a clean small gap...


As far as operating the vent you could just use a servo or a cable or even an electric actuator if you want to get fansy.
***


Then i snapped out of it when i though about taking a die grinder to my nice prestine stock hood.


While i was taking my front left wheel liner out i nodiced that my car has ducts specially made to vent the engine bay already... The side ducts are in a low pressure area so its a really good place to vent the engine bay.



=Ben




saxyman990: I just nodiced your post, glad to see other people think outside the box.

 

that would be bad ***.. automatic vents.. just like the the car that when you go a certain speed the rear wing goes up..

 

I have been thinking about trying that for awhile now. The only problem I haven't really figured out would be how to drain the water out of the cracks/pockets of the hood while still being able to open the hood. I thought running drain tubes to the rear of the fire wall would work, but I haven't tried it yet.

I also considered just using a small servo to control the hood "gills" to open and close with the touch of a button. I think if you have some type of rubber seal and enough pressure it should keep the water out.

 

+1 i love mine, you can see the heat coming out during hot days. I have driven it in the rain a lot since its my DD and have had ZERO issues.

 

Yep they are UGLY!! I want to puke everytime I go into my garage...

 

Scoot hoods are just plain ugly.. Nuff said. Looks good on a darker color fd imo

 

I have a scoot hood. It has no rain gards. My car sits out in the rain all day. Dose not do a dam thing to it. I drive it in the rain. When you drive the rain dose not goin due to the air flow coming out it gets pushed away more than sucked in.

I have seen bits of paper aproche my car on the high way and you think they would go under or in the vent in the front but instead they get suked into this vortex that shoots them up and over the back. Seen it happen a few times now as you do when you drive your beast every day.

After car been sitting in rain for a long time and you start it you get a nice steem effect coming out the vents. After it hot theres nothing.

Look at my engine bay, dose it look like rain affects it? NO. Not at all.
Car stays out cos there is no space in garage. Live with folks, they have garage space.

 

They look great on 99spec bumpers with the plate holder and Mazda badge though. The center scoop matches right up.

 

theres the volkswagon corrado, i know some porshes, and the crossfire there could be more, but i know those three for sure.

does anyone know what a 3rd gen stock hood goes for? if they do and i could do it i'm sure i could figure out a way to make it rise and fall to avoid water intrusion when car is sitting.. a few things here and there, and a seal(body color of course) wire it all up and watch it... minus the hood its self the parts would be the only things needed to by along with wiring, seals...

what would look better something that has a small opening in the front the something mid to back of the hood that pops up to "expel" the heat? sounds completely do-able really.. i think i'll get a picture of a 3rd gen hood and play with paint do mock up and make a new thread with picture of course...

the front end hole slightly resembling the scoot hood a bit maybe? or something completely different..

 

v-mount + ducting to an MS hood = best cooling possible.