NA & NB Miata Hood Louvers - Gauging Interest
Thread Starter
Joined: Jul 2006
Posts: 3,310
Total Cats: 1,236
From: San Diego
Hi, id like to see the product and maybe intersted in South Africa. However ive been contemplating the Nissan GTR35 vents which is a NACA duct tried and tested. Thats about as nice a duct as you gonna get and probably as effective as well? food for thought? just my 
their expensive as hell though
their expensive as hell thoughA not so serious suggestion:
Make the vents out of the hood itself (only the "prop" part needs fabricating, the template can be printed)?
Not serious since the hood Alu is thin; cutting it with control is not easy, it will break in the twisted parts (over time at least).
But if it would have been easy to do it would have been elegant, not even needing paint
Make the vents out of the hood itself (only the "prop" part needs fabricating, the template can be printed)?
Not serious since the hood Alu is thin; cutting it with control is not easy, it will break in the twisted parts (over time at least).
But if it would have been easy to do it would have been elegant, not even needing paint
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
Reply
0
0
Thread Starter
Joined: Jul 2006
Posts: 3,310
Total Cats: 1,236
From: San Diego
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
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
Last edited by ThePass; Jul 21, 2014 at 03:20 AM.
Reply
3
3
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 
), 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!
), 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!
Reply
0
0
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.
Reply
0
0
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.
Reply
0
0
Junior Member
Joined: Feb 2009
Posts: 328
Total Cats: 13
From: The Woodlands, TX
Reply
1
1
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
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
HNNNGGGGGGGGGGG
Reply
0
0
Joined: Oct 2013
Posts: 520
Total Cats: 27
From: Goleta, Southern California
Reply
0
0
Newb
Joined: Jul 2014
Posts: 2
Total Cats: 0
From: Fuquay Varina NC
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:
Need help pulling some under hood heat away from this aluminum lump:
Reply
0
0
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:
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.
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.
Reply
0
0
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:
It was ok. The paint all cracked and shitty at the crease but honestly I didnt give a **** 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 ****. 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 **** about rain, I mean think about how much water passes through the radiator when you drive in the rain.
Reply
0
0
