No one making fender braces or real rear diffuser?

wdkwang · 03-12-2013, 07:03 PM

2 common mods available on the market that make a noticeable difference on the car's handling are fender braces and a rear diffuser, yet there aren't any available for the 370 yet after 4 years. Whats going on?

For those who don't know what they look like, here's some examples on the 350:

As for the "rear diffusers" that available for the 370 right now, those are just pretty cosmetic pieces that don't do jack sh1t.

theDreamer · 03-12-2013, 07:09 PM

People have been asking for a true real diffuser for years, but no company has or is stepping up.

Z370Z011 · 03-12-2013, 07:13 PM

Theres so much aftermarket support for the 350z.. Im jealous

I think evoR has a rear defuser but only for the nismo version. Thats about all we've got though.

wdkwang · 03-12-2013, 07:25 PM

just seems like the only options right now is to custom fit the 350 or rx7 amemiya diffuser. gh3y

wdkwang · 03-12-2013, 07:27 PM

i feel like there won't be an aftermarket abundance for the 370 until it's at least 5-7 years old when prices drop down to around 20k so more people can afford it, thereby creating more demand.

Z370Z011 · 03-12-2013, 07:34 PM

Quote:

Originally Posted by wdkwang

i feel like there won't be an aftermarket abundance for the 370 until it's at least 5-7 years old when prices drop down to around 20k so more people can afford it, thereby creating more demand.

Yeah i give it 2 more years till we really start seeing a lot more aftermarket support. Kinda sucks.

travisjb · 03-12-2013, 07:46 PM

I ran a custom made "real" rear diffuser on mine and couldn't get a difference in lap times or improved car feel after several design iterations... the problem is the airflow leading up to the rear axle is turbulent and needs to be smoothed out with an under-tray / perhaps other mods in order to get benefits... there's going to need to be some real aero testing to make this all work and please tell me who has the money to rent a wind tunnel or CFD model the entire car? ideally we'd get this out of Nissan

travisjb · 03-12-2013, 07:50 PM

so far as fender braces, interesting idea... there's other bracing available to address front-rear stiffness, and of course roll cage for serious track cars... do you have a particular handling concern you are trying to address with these?

Honesty · 03-12-2013, 09:58 PM

Fender braces may show a marked improvement on handling in a 350, but I somewhat doubt they'd have as noticeable of an effect on the 370....

Quote:

The 370Z features a front aluminum subframe, aluminum-alloy engine cradle, aluminum door panels, an all-aluminum hood, and an aluminum hatch. Front body torsion rigidity is improved by 10 percent with an extensively revised body structure which includes a new front suspension cradle to reduce front body lateral bending, new rear structural reinforcements, and an underbody "V-bar" to help reduce rear lateral bending. Rear body torsion rigidity is improved by up to 22 percent and rear body vertical bending rigidity is improved by up to 30 percent.

Nissan 370Z - Wikipedia, the free encyclopedia

theDreamer · 03-13-2013, 07:08 AM

Quote:

Originally Posted by travisjb

I ran a custom made "real" rear diffuser on mine and couldn't get a difference in lap times or improved car feel after several design iterations... the problem is the airflow leading up to the rear axle is turbulent and needs to be smoothed out with an under-tray / perhaps other mods in order to get benefits... there's going to need to be some real aero testing to make this all work and please tell me who has the money to rent a wind tunnel or CFD model the entire car? ideally we'd get this out of Nissan

I believe UT in Austin has one and talked to a few people, cost would be about 15-20k to rent it for a day. Issue is between setup, teardown, creating the airflow you could really only get 3-4 different cars on.
Which would be good if you had them all setup ready to go ahead of time. Say:
-Stock Coupe
-Stock Nismo
-Modded Nismo with front/rear air diffuser
-Modded coupe with front/rear air diffuser

But who wants to donate money?

wdkwang · 03-19-2013, 02:33 PM

Quote:

Originally Posted by Honesty

Fender braces may show a marked improvement on handling in a 350, but I somewhat doubt they'd have as noticeable of an effect on the 370....

Nissan 370Z - Wikipedia, the free encyclopedia

any extra reinforcement that isn't there to begin with would be very noticeable, as opposed to replacing a factory brace with a stronger aftermarket one.

also, i find it funny the civic has a more aerodynamically efficient underbody than the z

EVOR · 03-19-2013, 02:40 PM

GT Spec does have it for 370Z. My 370Z was the test car

martin82 · 03-19-2013, 03:33 PM

"GTSPEC USA <gtspecusa@gmail.com>

Mar 13 (6 days ago)

to me
Sorry Martin our G37 fender brace we offer doesn't fit the 370z. Do you think there is a market for it. You can always start an interest group on the forums. If we get enough inquires we will look into it.

Thank you
Sales
"

wdkwang · 03-19-2013, 04:07 PM

Quote:

Originally Posted by EVOR

GT Spec does have it for 370Z. My 370Z was the test car

There isn't one for the 370z since it's not listed on their site.

travisjb · 03-19-2013, 06:01 PM

Quote:

Originally Posted by wdkwang

... i find it funny the civic has a more aerodynamically efficient underbody than the z...

two reasons for OEMs to spend engineering $ on underbody aero... one is downforce what we want, two is fuel efficiency what honda consumers want... the civic is a mature platform in a very competitive class, where the consumer cares a lot about fuel efficiency... not sure if a z buyer would pay more for an extra 0.5 mpg and guessing most Z buyers wouldn't be able to feel an extra 100-200 lbs of rear downforce. i could be wrong but i think we're in a small group and nissan knows it

03-12-2013, 07:03 PM	#1 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 20	No one making fender braces or real rear diffuser? 2 common mods available on the market that make a noticeable difference on the car's handling are fender braces and a rear diffuser, yet there aren't any available for the 370 yet after 4 years. Whats going on? For those who don't know what they look like, here's some examples on the 350: As for the "rear diffusers" that available for the 370 right now, those are just pretty cosmetic pieces that don't do jack sh1t. __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo! Last edited by wdkwang; 03-12-2013 at 07:30 PM.

03-12-2013, 07:09 PM	#2 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4210	People have been asking for a true real diffuser for years, but no company has or is stepping up. __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

03-12-2013, 07:25 PM	#4 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 20	just seems like the only options right now is to custom fit the 350 or rx7 amemiya diffuser. gh3y __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo!

03-12-2013, 07:27 PM	#5 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 20	i feel like there won't be an aftermarket abundance for the 370 until it's at least 5-7 years old when prices drop down to around 20k so more people can afford it, thereby creating more demand. __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo!

03-12-2013, 07:46 PM	#7 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	I ran a custom made "real" rear diffuser on mine and couldn't get a difference in lap times or improved car feel after several design iterations... the problem is the airflow leading up to the rear axle is turbulent and needs to be smoothed out with an under-tray / perhaps other mods in order to get benefits... there's going to need to be some real aero testing to make this all work and please tell me who has the money to rent a wind tunnel or CFD model the entire car? ideally we'd get this out of Nissan __________________ 2009 370Z #104 For Sale

03-12-2013, 07:13 PM	#3 (permalink)
Z370Z011 A True Z Fanatic Join Date: Jul 2012 Location: Los Angeles CA Posts: 1,052 Drives: PearlWhite 370z 6MT Rep Power: 14	Theres so much aftermarket support for the 350z.. Im jealous I think evoR has a rear defuser but only for the nismo version. Thats about all we've got though.

03-12-2013, 07:50 PM	#8 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	so far as fender braces, interesting idea... there's other bracing available to address front-rear stiffness, and of course roll cage for serious track cars... do you have a particular handling concern you are trying to address with these? __________________ 2009 370Z #104 For Sale

03-19-2013, 02:40 PM	#12 (permalink)
EVOR A True Z Fanatic Join Date: Sep 2009 Location: New York Posts: 1,647 Drives: 09 Nismo 370Z #80 Rep Power: 44	GT Spec does have it for 370Z. My 370Z was the test car __________________ WWW.EVO-R.NET

03-19-2013, 03:33 PM	#13 (permalink)
martin82 A True Z Fanatic Join Date: Nov 2011 Location: los angeles Posts: 2,636 Drives: 12 Nissan 370Z MB M6 Rep Power: 19	"GTSPEC USA <gtspecusa@gmail.com> Mar 13 (6 days ago) to me Sorry Martin our G37 fender brace we offer doesn't fit the 370z. Do you think there is a market for it. You can always start an interest group on the forums. If we get enough inquires we will look into it. Thank you Sales "

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