Formula 420

i saw this hood on another pic and thankls to d menac it has been photoshopped onto some stock 8's here's some pics. i think it's sweet. i contacted veilside and this is what they said--

Thank you for your inquiry, the hood will be available, however at this time
the price has not been set.We anticipate the first shipment to arrive in
May.

Regards,

VeilSide USA
1250 East 223rd #105
Carson CA 90745
Tel. 310-835-5684
-----------------------------------------
i'm gone for a month. i'll miss you *****! peace. drive fast.

Formula 420

another.

Formula 420

and the original....

EstonRX

I'd also want to know what it's made out of and what the weight is on it.

I do like the styling (probably because it's so close to stock) but I'd want to know if there's any performance reason to spend the extra money on something like that (the vents look aesthetic, I can't see much functionality in them).

EstonRX

(The vents up close, thanks shawrf1 for posting this pic - they look cool in my opinion, but can't do very much)

epitrochoid

looks like the front of a cruise ship

D MENAC 7

That gives me a totally different look at that hood. I didn't even know of the vents when Formula sent them to me. Otherwise, I would have worked on more detail than what I had which was just the first shot of the original red and at that resolution, I thought those were just shadows.

Formula 420

lol i didn'ty know there were wvenbts either d,
i don't know how much i like it anymore. it woyuld take getting used to, but i think i could handle it.

RX8FanMan

i like it

RX8Lover

I hate it

swifty949

the vents are reverse vent they are functional, and will help keep your motor cool. As you drive the air from the engine bay is sucked out the vents. The hood is made of FRP and weights under 10lbs.

mikeb

I'm gonna guess price will be 600

OdDbaLL0789

Nice...i guess...

EstonRX

Under ten lbs? I think that sounds extremely light... anybody know the weight on the stock hood for comparison?

Sue Esponte

Ok, so aside from collecting water is it supposed to be good for anything, because it sure looks like hell.

-Eric

s13lover

That is a terrible looking hood. Once again veilside makes an over rated product that look like sh#t.

MazdaManiac

iTrader: (3)

It looks like one of those cowl-necked dresses old society-type women wear.

Preacher

Nope,not for me.

Xyntax

I don't like this one.

There are RX-7 (FD) hood designs out there that might look nice on an RX-8.

Pinhy

nice concept with trying to bring more of the rotary into effect, but too much

Sue Esponte

Would you mind explaining the physics on that one? Too bad all of those ram-air guys keep getting it wrong. They might appreciate the explanation too.

While you're at it, would you mind explaining why the radiator is better positioned next to the firewall behind the engine and why we don't really need a grill in the front end of a car that has its engine in front?

Thanks!

-Eric

shawrf1

swifty/Ray, I'll give this one a shot...

*reposted* https://www.rx8club.com/showthread.p...referrerid=619

I am no expert in fluid dynamics & air movement, but I do understand your sarcasm regarding ram-air hoods and what-not. Good job; I like your sense of humor. For what it's worth re: functionality, a quick google on reverse hood vents revealed this (Taken from an EvoVIII press release):

"The hot air extraction vents in the engine hood... Extraction efficiency has also been improved... by adding a kickup to the leading edge to generate more negative pressure. As well as reducing drag and front lift, these detail improvements also boost radiator cooling performance. "

So. Assuming that the ambient air temp is cooler than under-hood temps, at speed, this negative air pressure created by the lip in front of the vent(s) creates a suction effect under the flow of air; the only air then readily available to fill the vacuum is the air under the hood. This hot(ter) air is sucked out and the engine bay is cooler. I could be wrong. Feel free to rebut.

Rob

p.s. The ram-air (hood)/hood scoop guys don't have it wrong at all. They're good, smart, people, too. The radiator is not better positioned behind the engine next to the firewall. That's just silly.

Kain

I LIKE THE REST OF THE BODY KIT BUT THE HOOD KINDA LOOKS LIKE THE CAR WENT TO FAST AND GOT SOME SPEED RIPPLES IN IT OR SOMETHING!!! and again, I like the rest of the kit (am pry going to get it) but the hood just makes me feel....................well uncomfortable really! GO TEAM!

Sue Esponte

Rob,

My sarcasm was towards the reverse vents not ram-air hoods (the functionality of which is clear - cold air in - these guys have it right). I hope you understood that I was also teasing about the position of the radiator.

I think most would agree that the more places hot air can escape from an engine bay the better. So, vents in generally are not inherently bad. The greater the heat soak the less efficient the engine. So, are some hood vents better than no hood vents? Sure. Maybe. Vents for everyone.

The notion, however, that cold air tumbling over the reverse vents will create a vacuum to suck out the hot air just doesn't make sense especially since (a) the hood doesn't allow for any additional cold airflow INTO the engine bay; and (b) cold air is more dense, thus heavier than hot air! To me, it's much like doing a FMIC without an exhaust. You get the add'l cold air into the engine but you don't give it anywhere to go. Air may be invisible but it doesn't just disappear. In this case you're supposedly extracting air more quickly but not feeding it into the engine at an equal rate. Doesn't make sense to me...but what do I know?

The explanation you provided also said the vents reduced drag which only further discredits the source in my book! I'll ignore the comments about marginal (if any) downforce created by the product....but how does creating add'l turbulent airflow on the front of a car reduce drag? Adding something, anything, to a smooth surface will create drag. In some instances, there is a greater benefit to the element creating the drag: a front wing on an F1 car, which creates downforce.

If you've ever driven a convertible for an extended period of time your neck is certainly familiar with the way turbulent air flows over the windshield and into the cabin. The air in the cabin doesn't get sucked out into the ether.

I'd say whatever marginal benefit the reverse vents may provide is seriously offset by the sheer heinous-ness of the design...but that's not very scientific, now is it? The notion of venting isn't bad, but side or flush vents would probably be equally as helpful in cooling, and any vents are likely to create drag issues...some more than others.

That's my non-scientific $.02. And, of course, all of this is assuming there isn't a larger intake or grill on the front air dam.

-Eric

P.S. Regarding the pic of the EVO, I'd say the removal of the forward intakes on that car would be a big mistake. All they did was take cold air from the car's engine and turbo. The result would be less efficiency. The car may be smoother in a wind tunnel but it doesn't mean the engine is breathing properly....and let's face it, you're going nowhere without the engine.

shawrf1

The air doesn't disappear and create a vacuum under the hood. It is replaced by air flowing below the bay and whatever air makes it's way through the front of the car (past the radiator) as you're speeding along.

I defer the explanation of drag coefficients, spoilers, air movement across your neck within a convertible, etc. to smarter, more capable people than I.