EVO-R 370Z Rear Diffuser

shabarivas · 10-05-2009, 05:25 PM

Quote:

Originally Posted by shabarivas

Guys - how hard would it be to make one w/out the fog light? I would seriously be interested in this and can send you a deposit... please let me know

Hey wanna follow up with this? Yes or no? I am sure a LOT of folks here would like a "no-fog" version

RCZ · 10-05-2009, 05:47 PM

Quote:

Originally Posted by travisjb

any chance you can make a functional version ? one for the racers and TT'ers please

+1

I don't know if you can call what you made a rear diffuser...more like a bumper garnish...

travisjb · 10-05-2009, 06:11 PM

Quote:

Originally Posted by RCZ

+1

I don't know if you can call what you made a rear diffuser...more like a bumper garnish...

haha... made me laugh

shabarivas · 10-05-2009, 08:40 PM

hahaah make me a bumper garnish with ketchup!! IE - no fregging butt-hole

RCZ · 10-05-2009, 08:47 PM

Nothing less than this would be acceptable.

m4a1mustang · 10-05-2009, 08:52 PM

You guys need to be careful... if you want to buy aero parts you really need to be buying stuff that's been designed/tested with the appropriate computer models and proven in wind tunnels. It's very easy to design some aero bit that should work in theory, but might end up just screwing everything up. And as you know, any aero piece that's been through that kind of design and testing process is going to be big money.

I'd be interested to see if those kind of diffusers offer any real benefit on cars that don't have a fully sculpted under tray.

shabarivas · 10-05-2009, 09:00 PM

well seems like this is for those of us who dont want the extra downforce etc... I do not expect this piece to be anything but for looks...

m4a1mustang · 10-05-2009, 09:06 PM

Quote:

Originally Posted by shabarivas

well seems like this is for those of us who dont want the extra downforce etc... I do not expect this piece to be anything but for looks...

Indeed. I was just sayin'.

RCZ · 10-05-2009, 09:11 PM

Quote:

Originally Posted by m4a1mustang

You guys need to be careful... if you want to buy aero parts you really need to be buying stuff that's been designed/tested with the appropriate computer models and proven in wind tunnels. It's very easy to design some aero bit that should work in theory, but might end up just screwing everything up. And as you know, any aero piece that's been through that kind of design and testing process is going to be big money.

I'd be interested to see if those kind of diffusers offer any real benefit on cars that don't have a fully sculpted under tray.

I completely agree with you sir. The thing is though that the diffuser is the one thing that wont create lift and helps tidy up the air flow out the rear of the car. Faster flow there = lower pressure = downforce + Stability. Rear wing and front wing are different stories. You also have to differentiate between spoilers, splitters, diffusers and wings. I would buy a splitter, diffuser and a spoiler from a normal vendor, but not a rear or a front wing. Uneven, untested downforce = ftl

travisjb · 10-05-2009, 09:43 PM

a lot of local nasa racers in az i run with have been doing homemade diffusers without any real analysis and getting great results... i'm sure you are correct regarding optimizing the design but I'd guess that replicating a proven diffuser design and slapping it up on this car is going to be better than naught

RCZ · 10-06-2009, 12:40 AM

Yup, a lot of folks with DYI racecars round here do the same. Smooth upward sloping and straight fins. The other DIY is a front splitter...all you gotta do is make sure its flat and well supported and it will help direct air more smoothly under the front end again creating stable faster flowing zones underneath that help with front end stability. The coup de gras being a fully flat pannel under the middle section of the car connecting the rear diffuser and the front splitter. BANG, tons of downforce and no giant wings ala the F430 and 458 Italia.

travisjb · 10-06-2009, 01:51 AM

Quote:

Originally Posted by RCZ

Yup, a lot of folks with DYI racecars round here do the same. Smooth upward sloping and straight fins. The other DIY is a front splitter...all you gotta do is make sure its flat and well supported and it will help direct air more smoothly under the front end again creating stable faster flowing zones underneath that help with front end stability. The coup de gras being a fully flat pannel under the middle section of the car connecting the rear diffuser and the front splitter. BANG, tons of downforce and no giant wings ala the F430 and 458 Italia.

sure would be nice to get the aero we need on this car for high speed track work without having to resort to a big *** rear wing... but I suspect it will be necessary unless as you say we can design a functional full undertray + functional diffuser

EVOR · 10-06-2009, 02:04 AM

I think Top secret carbon rear diffuser might be able direct fit on 370Z.

Minicobra1 · 10-06-2009, 03:26 AM

Quote:

Originally Posted by shabarivas

Hey wanna follow up with this? Yes or no? I am sure a LOT of folks here would like a "no-fog" version

Yeah, offer one with the no-fog light, I'm still on the fence on weather or not I want to get that thing working, or just cover it up.

travisjb · 10-06-2009, 08:28 AM

Quote:

Originally Posted by EVOR

I think Top secret carbon rear diffuser might be able direct fit on 370Z.

interesting... do you have a photo of it from the bottom or off of the car ? also, do you have access to the part for test fitment ? thanks

10-05-2009, 08:52 PM	#36 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	You guys need to be careful... if you want to buy aero parts you really need to be buying stuff that's been designed/tested with the appropriate computer models and proven in wind tunnels. It's very easy to design some aero bit that should work in theory, but might end up just screwing everything up. And as you know, any aero piece that's been through that kind of design and testing process is going to be big money. I'd be interested to see if those kind of diffusers offer any real benefit on cars that don't have a fully sculpted under tray. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook! Last edited by m4a1mustang; 10-05-2009 at 08:54 PM.

10-05-2009, 09:43 PM	#40 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	a lot of local nasa racers in az i run with have been doing homemade diffusers without any real analysis and getting great results... i'm sure you are correct regarding optimizing the design but I'd guess that replicating a proven diffuser design and slapping it up on this car is going to be better than naught __________________ 2009 370Z #104 For Sale

10-06-2009, 02:04 AM	#43 (permalink)
EVOR A True Z Fanatic Join Date: Sep 2009 Location: New York Posts: 1,647 Drives: 09 Nismo 370Z #80 Rep Power: 45	I think Top secret carbon rear diffuser might be able direct fit on 370Z. __________________ WWW.EVO-R.NET

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10-05-2009, 08:40 PM	#34 (permalink)
shabarivas A True Z Fanatic Join Date: Apr 2009 Location: Sacramento, CA Posts: 2,188 Drives: 370z MB 6mt Rep Power: 914	hahaah make me a bumper garnish with ketchup!! IE - no fregging butt-hole

10-05-2009, 08:47 PM	#35 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	Nothing less than this would be acceptable.

10-05-2009, 09:00 PM	#37 (permalink)
shabarivas A True Z Fanatic Join Date: Apr 2009 Location: Sacramento, CA Posts: 2,188 Drives: 370z MB 6mt Rep Power: 914	well seems like this is for those of us who dont want the extra downforce etc... I do not expect this piece to be anything but for looks...

10-06-2009, 12:40 AM	#41 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	Yup, a lot of folks with DYI racecars round here do the same. Smooth upward sloping and straight fins. The other DIY is a front splitter...all you gotta do is make sure its flat and well supported and it will help direct air more smoothly under the front end again creating stable faster flowing zones underneath that help with front end stability. The coup de gras being a fully flat pannel under the middle section of the car connecting the rear diffuser and the front splitter. BANG, tons of downforce and no giant wings ala the F430 and 458 Italia.