R Theory Motorsports Hood Vent Group Buy
 

Hey Miataturbo.net, R Theory Motorsports is holding a group buy on our NA and NB Hood vents. We offer both versions in a 3 panel and 5 panel configuration. Our vents are designed to follow the factory hood bracing, thus minimizing losses in hood rigidity while giving the hood vents an OEM plus look. All vent locations are also carefully placed to ensure proper air evacuation from under the hood, keeping your street or track car temps cool.

All kits include stencils for cutting your hood and black rivets for mounting the vents to your hood. Black rubber trim is available for an extra $10 if you will be mounting the vents under your hood. Semi gloss Black powder coat is available for an additional $45. All prices are in USD and includes shipping to the Lower 48 States and Canada. Shipping elsewhere is available for an additional fee, please email rtheorymotorsports@gmail.com for a shipping quotation.

Pricing Structure is as follows:

5-10 PEOPLE:
NA3) $145
NA5) $185
NB3) $145
NB5) $185

11-15 PEOPLE:

NA3) $140
NA5) $175
NB3) $140
NB5) $175

16+ PEOPLE:
NA3) $130
NA5) $165
NB3) $130
NB5) $165

In addition to the group buy discounts, if we hit 20+ people I will be raffling off one set of vents to one of our group buy customers! Last day to leave a deposit is Friday, November 3rd, 2017. Manufacturing takes roughly 1-2 weeks, orders will be shipped out shortly after. Powder coat adds roughly 1 week to the lead time.

For additional group buy information or to leave a Paypal deposit to secure your spot in the group buy, visit the group buy link: NA/NB Hood Vent Group Buy #2 ? R Theory Motorsports
Drop any additional questions here or send us an email!

Wool Tuft Test:

https://cimg7.ibsrv.net/gimg/www.mia...d63c513b28.jpg
https://cimg8.ibsrv.net/gimg/www.mia...f421b6afd6.jpg
https://cimg9.ibsrv.net/gimg/www.mia...77111a5f67.jpg

Any photos from the underside of the NA hood? Substructure remains intact?

I have this picture of the NA 3 panel vents; NA 5 panel set up will have similar amount of trimming. If you are mounting your vents on the outside skin, this is how the bottom frame will look. Very minimal trimming, most of frame is still intact. If you wanted to mount them under the outside skin for a cleaner look, you would have to trim the frame to make clearance for the outside perimeter of the vents. After doing this, the overall structure of the hood frame is still intact but you will sacrifice some rigidity but not much.

https://cimg9.ibsrv.net/gimg/www.mia...7595744211.jpg

If anyone is curious, the NB set up requires ZERO trimming to the frame underneath if you are mounting them on top of the hood skin. Our design allows you to rivet the vents underneath the skin directly to the hood frame, so no fasteners will be shown on the outside skin!

https://cimg9.ibsrv.net/gimg/www.mia...b8b46f362f.jpg
https://cimg2.ibsrv.net/gimg/www.mia...0c92882d6d.jpg

Hey these look great! That said when designing these was the primary goal to keep the factory hood bracing while flowing air? I've read numerous other threads where the the goal was placement in very specific locations for maximum efficiency when flowing air out of the engine bay. Your three and five vent setup looks to have a bit different placement then other setups, but seems to have more open area out of the engine compartment. Always to good to see more innovation in the community keep it up.

I'm glad you like them! When designing both the NA and NB vent kits, the main goal was to design a vent set up that went around the OEM bracing to minimize loosing rigidity. But at the same time we had to ensure we placed the vents in spots where we had low air pressure on top of the hood so we could effectively evacuate the hot engine bay air. A neat result of designing around OEM shapes is a cool looking OEM plus design. :)

Interested.

bytevenom you interested?

Any pre/post data on under hood temps if you ran any back to back tests with two hoods or something like that?

Right as I'm shopping for hood vents! NA5 set ordered!

In for data

I have not yet run any back to back test regarding temps. I won't be heading to the track until this coming weekend which is where you will see the greatest gains, but i'll see if I can get some reliable data today on the street.
At this moment I have the video of the Wool Tuft test posted above which illustrate at what speeds you can expect them to start evacuating air, and which parts of the vents flow the greatest amounts of air.

Hood vents are pretty well documented to function in the areas you are offering, but just out of curiosity, how is the wool tuft test (looks like string to me) effected by normal airflow over the hood and body? Wouldn't the tufts move in a visually similar fashion on top of a ventless hood?

No.
They will basically lay flat without some sort of lift.

Oh, ok, thanks.

Am I wrong to expect that vents should have minimal flow through them with the car stationary if the radiator fans are on? This is assuming a well fitting undertray and a radiator cowl.

It should, if your undercarriage is completely sealed the air should have no where to go but up through the vents. Although the video was recorded in February in the middle of winter so it's likely the fans didn't turn on.

For those curious about back to back temps, it's too cold here for me to get reliable data on the street without doing several pulls that would put me in trouble. I'll hopefully be going to the track today or Sunday weather permitting. Will post my findings after I come back. Also I've received emails and comments on social media from people saying they'll hop in the group buy once we reach the 10-15 people price point. If you're waiting for that price point I would encourage you to hop in on the group buy. It looks like with the number of people saying they'll hop in, we will easily exceed 10 people. :)

Looking forward to see the results! Do you have templates ready for NA version, if we want to install them from the underside of the hood?

Ben

Templates for all configurations are available! All vent kits are shipped with templates.

Thanks for bringing another option to market! If you guys happen to do another tuft test soon, it might be useful to trim your wool tufts to the approximate length of the competitors. When comparing youtube vids, your lengths look twice, if not three times as long.

I'm no expert in this stuff, nor do I know if a longer tuft is a more stringent test, but getting them a bit more inline for apples-to-apples may help with the results I see between the vids.

Just an update, we managed to hit the 11-15 people milestone. Last day to pre-order is this Friday so act quick if you're still on the fence!

I managed to go to the track and ran 5 lap sessions back to back. Same driver and same car, first run with the vents taped up and second run with the vents opened. With the vents taped up we saw water temps as high as 210 Degrees Fahrenheit. With the vents open water temps got up to 203 degrees. Ambient temperature was only 60 degrees, i'm expecting much bigger differences in the summer heat. Results will also vary based on what kind of ducting and other aerodynamic mods you have. In hindsight it would have been nicer to get you folks some data-logs. If I manage to squeeze in one more track day this year I'll fetch more data.https://cimg8.ibsrv.net/gimg/www.mia...a261fb1408.jpg

Nice, data is king. Is the rubber trim for the underhood install custom formed?