Fender vents??

synolimit · 01-03-2014, 04:10 AM

So on a top gear Jeremy said the 458 has fender vents because when the cars at speed the wheel creates air pressure in the fender. So the vents are there to keep the car down and create down force. The Japanese STI S206 also has them. What about the 370z?

exsanity · 01-03-2014, 05:13 AM

Not sure what the question is..

DEpointfive0 · 01-03-2014, 06:51 AM

Quote:

Originally Posted by exsanity

Not sure what the question is..

I have a feeling he is going to ask if there is any way he can male or fabricate it for his car. Or why no one makes these aftermarket.

The Ferrari has it built in more than just vents, it's a combination of a lot of flexible and variable speed aerodynamics that makes real down force. If you just turned where most people had their brake cooling ducts into vents to the fender, I can't see just that, even with several other front end mods giving any appreciable downforce unless you are an aerodynamics engineer and/or are a part of the more money than brains club to have something made that actually works

exsanity · 01-03-2014, 07:28 AM

Quote:

Originally Posted by DEpointfive0

I have a feeling he is going to ask if there is any way he can male or fabricate it for his car. Or why no one makes these aftermarket.

The Ferrari has it built in more than just vents, it's a combination of a lot of flexible and variable speed aerodynamics that makes real down force. If you just turned where most people had their brake cooling ducts into vents to the fender, I can't see just that, even with several other front end mods giving any appreciable downforce unless you are an aerodynamics engineer and/or are a part of the more money than brains club to have something made that actually works

DEpointfive0 · 01-03-2014, 07:41 AM

^^^Unless you're venting the fender liners... Then you are just adding those for looks. And since there are no instructions to cut holes in your fenders, those are for looks

TenaciousZ · 01-03-2014, 10:51 AM

It seems simple enough ( in theory ) to cut a hole in the fender and fender liner to allow pressure to escape.

The question is, how will it look, and will it make a noticeable difference?

Keep in mind that ferrari would be willing to add this feature even if it only makes a slight difference at near 200 mph.
Not saying that's a fact, just pointing out their priorities are different than most.

ufoz8mycow · 01-03-2014, 01:24 PM

Unless you have a wind tunnel to test it in or a ludicrous amount of horsepower to contend with that could actually attain the speeds necessary for this kind of downforce, you're just cutting up your car for no reason.

Team_STILLEN · 01-03-2014, 01:42 PM

Generally this technique doesn't benefit the car that much at speeds under 60 mph. I don't recall the exact number from wind tunnel tests but its not as simple as simply cutting a hole in your fender. The design has to not add drag for it to work properly. The design that seems to work well with minimal customization is...

I don't like the look of it but I know it works okay. If you want to make it look really cool and be functional you are looking at a lot of custom work and testing. Usually messing with aerodynamics too much just hurts performance.

synolimit · 01-03-2014, 05:42 PM

Quote:

Originally Posted by DEpointfive0

I have a feeling he is going to ask if there is any way he can male or fabricate it for his car. Or why no one makes these aftermarket.

The Ferrari has it built in more than just vents, it's a combination of a lot of flexible and variable speed aerodynamics that makes real down force. If you just turned where most people had their brake cooling ducts into vents to the fender, I can't see just that, even with several other front end mods giving any appreciable downforce unless you are an aerodynamics engineer and/or are a part of the more money than brains club to have something made that actually works

Not asking how, asking more for looks. Install the S206 vents.

We don't really test for custom splitters or all the aftermarket wings. We just do it. Like I did with my custom hood vent. If any car can build pressure within the wheel well, venting it anyway can be beneficial. I understand speed though. But most tracks we can get to say 150mph so ill take and down force I can get.

TonySlimfast · 01-04-2014, 12:31 AM

Quote:

Originally Posted by Team_STILLEN

Generally this technique doesn't benefit the car that much at speeds under 60 mph. I don't recall the exact number from wind tunnel tests but its not as simple as simply cutting a hole in your fender. The design has to not add drag for it to work properly. The design that seems to work well with minimal customization is...

I don't like the look of it but I know it works okay. If you want to make it look really cool and be functional you are looking at a lot of custom work and testing. Usually messing with aerodynamics too much just hurts performance.

I don't know why but I always think that these fenders would allow so many rocks to fling into your car ..... So does anyone have long term daily driving experiences with these type of fenders ?

axmea? · 01-04-2014, 02:13 AM

The Ferrari vent doubles as an ashtray for those euro smoke-inhaling nicotine-addicted bloods. BTW, most streets in Italy will not allow you to drive so fast that downforce is needed.

synolimit · 01-04-2014, 10:22 PM

Might try these...

XiP · 01-04-2014, 10:25 PM

will cutting up your car affect your lease?

synolimit · 01-04-2014, 10:53 PM

What lease

Huckleberry · 01-04-2014, 10:53 PM

Quote:

Originally Posted by XiP

will cutting up your car affect your lease?

Why bother? At most you're throwing money away by replacing the liners.

01-03-2014, 04:10 AM	#1 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Fender vents?? So on a top gear Jeremy said the 458 has fender vents because when the cars at speed the wheel creates air pressure in the fender. So the vents are there to keep the car down and create down force. The Japanese STI S206 also has them. What about the 370z? __________________ 13 370z- Last edited by synolimit; 01-03-2014 at 04:13 AM.

01-03-2014, 05:13 AM	#2 (permalink)
exsanity Premium Member Join Date: Oct 2013 Location: Middle Tennessee Posts: 10,499 Drives: you mad.. Rep Power: 3700	Not sure what the question is.. __________________ \| F.I. NonRes Carbon CBE \| F.I. High Flow Cats \| Hotchkis Sway Bars \| KW Variant 3 \| SPL Suspension Parts \|

01-03-2014, 07:41 AM	#5 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	^^^Unless you're venting the fender liners... Then you are just adding those for looks. And since there are no instructions to cut holes in your fenders, those are for looks BeemaaZ and Chuck33079 like this. __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

01-03-2014, 10:51 AM	#6 (permalink)
TenaciousZ Base Member Join Date: Aug 2010 Location: Kansas City Posts: 160 Drives: Black 09 sp/tour/nav Rep Power: 15	It seems simple enough ( in theory ) to cut a hole in the fender and fender liner to allow pressure to escape. The question is, how will it look, and will it make a noticeable difference? Keep in mind that ferrari would be willing to add this feature even if it only makes a slight difference at near 200 mph. Not saying that's a fact, just pointing out their priorities are different than most. DEpointfive0 and 6MT-Z34 like this. __________________ 09 370Z Black Sport/Touring/Navi Red Stitching

01-03-2014, 01:24 PM	#7 (permalink)
ufoz8mycow Track Member Join Date: Mar 2012 Location: Vegas Posts: 536 Drives: Black Cherry '12 Z Rep Power: 16	Unless you have a wind tunnel to test it in or a ludicrous amount of horsepower to contend with that could actually attain the speeds necessary for this kind of downforce, you're just cutting up your car for no reason. Jordo!, dirTy_shoeZ, Chuck33079 and 1 others like this.

01-03-2014, 01:42 PM	#8 (permalink)
Team_STILLEN Base Member Join Date: Dec 2013 Location: Costa Mesa, California Posts: 216 Drives: 2009 370Z Rep Power: 21	Generally this technique doesn't benefit the car that much at speeds under 60 mph. I don't recall the exact number from wind tunnel tests but its not as simple as simply cutting a hole in your fender. The design has to not add drag for it to work properly. The design that seems to work well with minimal customization is... I don't like the look of it but I know it works okay. If you want to make it look really cool and be functional you are looking at a lot of custom work and testing. Usually messing with aerodynamics too much just hurts performance. gurneyeagle likes this. __________________ Financing with Affirm now available!!! *STILLEN* \| Robin \| Performance Specialist \| rmoses@stillen.com\| 800.576.2131 x133 \|

01-04-2014, 02:13 AM	#11 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,236 Drives: WELL ZED PW 6MT Rep Power: 53241	The Ferrari vent doubles as an ashtray for those euro smoke-inhaling nicotine-addicted bloods. BTW, most streets in Italy will not allow you to drive so fast that downforce is needed. DEpointfive0 likes this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete

01-04-2014, 10:22 PM	#12 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Might try these... gurneyeagle likes this. __________________ 13 370z-

01-04-2014, 10:25 PM	#13 (permalink)
XiP A True Z Fanatic Join Date: Dec 2011 Location: no clipping Posts: 11,096 Drives: ↑ ↓ Rep Power: 534	will cutting up your car affect your lease? dirTy_shoeZ likes this. __________________ I <3 Frost!!!

01-04-2014, 10:53 PM	#14 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	What lease __________________ 13 370z-

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