JABrx7

iTrader: (1)

there HUGE hood scoop.

phoenix7

well, that goes for any car. The AST is prone to problems and so is the radiator with all it's plastic parts. The cooling on the FD is the number one killer and yes, I do understand that with maintenance it is all peachy keen, but in the end the FD IS MORE LIKELY to experience heating problems when compared to the FC.

Now the issue we're discussing is the hood with the scoop. STOCK FOR STOCK. If you use the whole "if you keep your cooling system in check everything is wonderful" argument then the main issue of "MAZDA KNEW WHAT THEY WERE DOING" is invalid. If MAZDA did indeed KNOW what they were doing then we wouldn't NEED too keep the cooling system in check, right?????

phoenix7

well, now that we established the obvious, again, what does the subaru scoop have to do with the TII scoop?

marcus219

man you guys are funny.......or should i even say guys. hahha

everyone argues for what they have...."oh no you didnt!!!"

phoenix7

if you don't argue then we have a world full of lemmings. Imagine if no one argued opposing points(in reality people rarely speak up or stand up for what they believe in anymore). The last thing I want is to recreate and live in idiocracy.

micah

Yeah, I'm sure they knew what they were doing.........

stylEmon

iTrader: (2)

alright maurray povich... LOL

The T2 scoop has plenty of funcionality on a stock T2. If I'm not mistaken, dont you want the coolest, freshest air going to the inter-cooler? A ram hood does exactly that.

Once you go away from tmic, the hood loses funcionality. and could even create a problem with air circulation. The car/engine bays are designed to move air in a certain fashion. Ther are high and low presure areas that were designed for a reason. If you take away the tmic, air ramming through the hood could cause turbulance. or disrubt the flow that air was intended to take through the bay.

In short, if you starting messing with ducting and other forms of air movement through the engine bay, you better make sure you know what you are doing. Or else, you could over-heat your engine (see FD)

micah

LOL. See above picture. There's no ram effect. Next theory please....

phoenix7

OK, please explain in detail the picture you posted as proof that the design is perfect. Please remember I'm not retarded so feel free to use the proper terms for your explanation.

P.S.
so, if it's not ram air then do tell me what it is you're trying to show me with pictures and NO words.

13b4me

You do realize the drag coefficient of a stock FC is .29 right? That's very similar to a Corvette ZR-1, and is still well below the industry standard for sports cars even TODAY.

stylEmon nailed it. I can't believe this thread.

Anyone notice the rubber seal under the hood, that SEALS around the intercooler? If that isn't forcing air through it, then I don't know what would. If you're running the TMIC, you won't find a better hood than the stocker, period. If you're running a FMIC setup, you'd do well to at least block off the scoop. It can disrupt the airflow through the bay, as previously stated. Ideally you'd run a reverse vented hood so the air can continuously pass through the bay.

What does Subaru have to do with Mazda? Could it be the fact that BOTH use a factory TMIC, and BOTH have rubber seals making sure they see the airflow they need? Hmmm.

Also the N/A (and TII) hoods were both available in either steel (~50lbs) or aluminum (~28lbs). So neither as a whole is superior, where weight is concerned.

Oh and what's wrong with "a nice cool breeze over the intake"? Well your intake MANIFOLD doesn't exactly need fresh air.

phoenix7

I still don't know what he was trying to see by "ever seen a Subaru?"

yes they're both TMIC, both have hood scoops, and both have the rubber seals. What I'm trying to say is that he cannot compare a scoop that is raised 2-3" more than ours. That's like me comparing your **** with that of a black guy (if you're offended then you have a small dick)

I've seen the subaru scoops (WRX AND STI) and they're shorter and taller than the TII scoop. SO no, I don't know what he's trying to say besides the fact that the ICs are mounted similarly.

Mindspin311

The aerodynamic profile shows that right at the leading edge of the scoop air is being forced down on the hood into the scoop itself. Thats what the downward arrows represent. Look at the spoiler, same thing, downforce.

Why Subaru? It proves that what Mazda did with the top mount is an effective design, Subaru has been doing it with all its turbo boxer motors, same effect. Yea they look different but they do the same damn thing.

13b4me

Well I know it's big, but I wouldn't exactly call it a "Subaru".

And FWIW, the Subaru Impreza has an entirely different aerodynamic profile than the FC, so your arguement about size and placement of the scoop is irrelevant. When Subaru makes an Impreza with a .29 drag coefficient, then come talk to me. The scoop on a TII was placed in an optimal position for the profile of the car. And it was wind tunnel tested btw. Do you have a wind tunnel?

Trots*88TII-AE*

iTrader: (11)

how did a thread about functionality of the TII hood when removing the TMIC turn into a debate about mazda engineering, and whether or not they should have used that design? Obviously when using a FMIC, a reverse vent hood is the most efficient way of both A) Expelling heat and B) allowing more air to be drawn in through the front, due to the ability to expel at the top. I'm not sure about idiosyncrasies, but I sure hear some idiotic and totally pointless responses. P.S. it's not real precise to use a flow profile of an N/A when debating the placement of a TII hoodscoop, it's obviously going to be different.

beefhole

iTrader: (29)

I have the best of everything. FMIC, and an ALUMINUM NA hood (from a vert)

13b4me

And a factory shift **** if I can ever find the damn thing.

micah

Not sure how the coefficient factors into the ram-air of the scoop...... but it was my understanding that the picture shows a vacuum on the hood, pressure at the base of the windshield... Vacuum on the hood wouldn't be very good for a ram-air scoop - am I right?

13b4me

Notice the vacuum decreases as it progresses up the hood. That means it approaches ambient levels the further up the hood it goes, thus still effectively forcing air into the scoop. Someone mentioned the "slope off" earlier. That's what they meant.

micah

ambient levels are far from "ram-air". The front of the car where the radiator is at... thats ram air as depicted in the image. The hood, however, would actually be sucking air OUT. So.... if that was their intention; great, but shouldn't the scoop be facing the other direction?

Wankel7

That picture that you posted shows low pressure areas on the car. The car almost acts like a wing. You have air passing underneath of it and air passing over the top of the car. The air that takes the path over the top of teh car has to travel faster to meet up at the back. This creates area's of low pressure. What you see in the picture you posted.

In that last paragraph I described how an airplane flies. Low pressure above the wing and high pressure underneath of it. Bernoulli's principle


According to what your saying there isn't much air movement over the scoop.

I would like to invite you to hang onto the next airplane wing you see. When you get back tell me how the flow was over teh top of that wing

The scoop works at speed.

James

Spectator

iTrader: (1)

dUDE, GET A HOOD FROM A gxL OR gtu, ITS IN ALUMINUM AND WEIGHTS THE SAME AS A tii HOOD.

sry for caps.

Ottoman

I own the only 2 working FC's in the country...

it would cost me less to buy and ship a CF hood then a alum. one...

I ended up using a 2nd TII hood from my JDM front clip for the 2nd car..



as for those saying scoop doesn't have a ram air effect


after driving the car for awhile, remove the TMIC touch the manifold it's a scorcher..... the engine is damn hot... intake is heat soaked...

after i went to an FMIC... i could lean against the manifold with my hand and hold it there...

obviously a bunch of cool(er) air is being blasted directly on to the motor for it to stay cool enough to touch the alum...

I fail to see how this is a bad thing to me

micah

Thats a pretty good explanation I suppose. I just don't understand why the arrows/pattern would be different around the radiator area...

So, explain the picture. What do the arrows mean? I've never seen this picture posted with any text describing it.

stylEmon

iTrader: (2)

those arrows indicate the amount of sexy-ness radiating off various parts of the FC.