If you're talking about the R35 GTR, the naca ducts on that hood intake air, they do not vent air. They are there for the purpose of blowing cooler air over the turbo area, not to increase effectiveness of the radiator or to reduce under-hood pressure (the two goals of a hood vent/louver)

I see what you're getting at ;) but besides the downsides of being far more complex and very expensive to package/ship, the nice thing about these louvres is that the 'twisted' section hides underneath the hood material. The fins of the louver are all that are visible from the top, which makes for a nice clean appearance. That wouldn't be achievable if the louvers were in the same layer as the hood.

-Ryan

Interested.

In for NA.

In for a NB set.

Looked at the other thread and was slightly disappointed you didn't post any updates to it. Then I saw this. :party:

Interested for NA set

I have some preliminary louvers coming from the waterjetter probably later this week. Most likely not the final shape, but will be something to get my hands on and play with.

In the mean time, we are in the process of becoming authorized vendors and I have a set of pressure gauges on the way to do some specific testing - these louvers will ultimately be based around what works best according to the data for our cars, not just what should work in theory :)

-Ryan

That is product development like I like it. I'd be in for a NA set!

Interested for NA.

I'm at stock power level with no cooling mods or ducting, but I would be interested in a NB set if properly executed, with a proven decrease in underhood pressure. At least in theory, these should always increase cooling ability on street cars and track cars alike (unless car is going backwards at high speeds :party:), although track users with ducting would reap more rewards, correct?

On a side note, will the louvers be protruding the OML of the factory hood? I am asking because this would likely affect the pressure map of the hood, in some manner or another.

I need to start slowly buying things as they come to the market. Keep up the development!

Paypal ready, for NA.

Better be available in chrome to fit with my style bar.

Sarcasm? Since these will be shipped flat and require manhandling to install it seems like uncoated would be the best option. It would also keep the price and inventory down. I don't think chrome, powdercoat, or even good paint would hold up to the twisting to get the louvers into position.

It was definitely sarcasm...

Go ahead and bring the NB version to market first. That'll give the NA guys a little more time to save up. ;)

Yes, it was. I feel bad now. :(

Commit to buy a set or 2 and it should be forgotten ;)

http://procrasti-nation.eu/wp-conten...e-my-money.jpg

HNNNGGGGGGGGGGG

I'm in. Paypal address stat.

I'm in so cal, no care.

Ha! Just joined the forum because of this thread and the potential to jump in on a set of well thought-out hood vents for the NA... Please produce these and take our $$$.

Need help pulling some under hood heat away from this aluminum lump:

https://www.miataturbo.net/attachmen...ine=1406375467

https://www.miataturbo.net/attachmen...ine=1406375467

I've almost cut "H"s into my my hood a few times to make louvers and gourney flaps, but I'm not that experienced with metalworking so I don't know how well that'd work. To clarify, your proposed vents would have flat pieces of metal connected to the overall piece by small tabs. The larger part would be bent down to form a louver and the smaller part would be bent up to form a gourney flap (which by nature rises above the hood around it) to aid the louver behind it. Thats what it looks like from your CAD drawing. Is that about right? I was a little confused from what you said here:

Like this but in a different spot and with more front and stuff?

https://www.miataturbo.net/attachmen...ine=1406510823

It was ok. The paint all cracked and shitty at the crease but honestly I didnt give a shit and knew that it would and I did nothing to attempt to mitigate it like use the heat gun or go slow. Its mildly difficult, not too bad. And speaking of rain. That car got left outside in the torrential downpours today while I did the timing belt on my dad's miata and it started up fine and shit. I wouldnt worry about rain in through the vents unless you can see the top of the valve cover through the vents, then you could worry about water pooling in the spark plug wells. But nothing else in the bay really gives a shit about rain, I mean think about how much water passes through the radiator when you drive in the rain.