Venting fenders into engine bay? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

halfwaytobedlam · 05-06-2021, 11:23 PM

I know this is a bit silly, but since WTAC regs require oem fenders, I was thinking of reducing wheel well drag by venting the air in the wells into an exit located on the hood of the car, instead of directly on the fender itself. Would this be a worthwhile thing to do, i.e. would it still have the same effect?

Purist · 05-07-2021, 03:18 AM

Why not get some tape, bits of wool, a go pro and do some old school aero testing.

Sent from my SM-G973F using Tapatalk

alex87f · 05-08-2021, 08:20 AM

I doubt you'd be able to vent much through them. Some people on this forum have tried to use them a engine bay heat extractors though (probably an easy thread to find).

blsfrs · 05-09-2021, 10:30 AM

There is a discussion on garnish vents in the diy section.

Icecreamtruk · 05-13-2021, 01:42 AM

Quote:

Originally Posted by halfwaytobedlam

I know this is a bit silly, but since WTAC regs require oem fenders, I was thinking of reducing wheel well drag by venting the air in the wells into an exit located on the hood of the car, instead of directly on the fender itself. Would this be a worthwhile thing to do, i.e. would it still have the same effect?

Can you not just cut out vents in the OEM fenders?

Lonewolf · 05-19-2021, 02:32 PM

Quote:

Originally Posted by alex87f

I doubt you'd be able to vent much through them. Some people on this forum have tried to use them a engine bay heat extractors though (probably an easy thread to find).

Here's a few:

https://www.ft86club.com/forums/show...unatic&page=46

https://www.ft86club.com/forums/showthread.php?t=112265

https://www.ft86club.com/forums/show...t=70815&page=5

https://www.ft86club.com/forums/show....php?p=2242555

The first post of this thread also shows some wheel well venting:

https://www.ft86club.com/forums/showthread.php?t=78266

05-06-2021, 11:23 PM	#1
halfwaytobedlam Member Join Date: Nov 2020 Drives: 2014 Toyota 86 GTS Location: Northern Territory, AUS Posts: 10 Thanks: 3 Thanked 5 Times in 3 Posts Mentioned: 1 Post(s)	Venting fenders into engine bay? I know this is a bit silly, but since WTAC regs require oem fenders, I was thinking of reducing wheel well drag by venting the air in the wells into an exit located on the hood of the car, instead of directly on the fender itself. Would this be a worthwhile thing to do, i.e. would it still have the same effect?

05-07-2021, 03:18 AM	#2
Purist Senior Member Join Date: May 2017 Drives: Subaru BRZ Location: Australia Posts: 349 Thanks: 125 Thanked 261 Times in 145 Posts Mentioned: 5 Post(s)	Why not get some tape, bits of wool, a go pro and do some old school aero testing. Sent from my SM-G973F using Tapatalk __________________ Less More

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05-08-2021, 08:20 AM	#3
alex87f Meow Join Date: Aug 2017 Drives: GT86 (now sold) Location: France Posts: 550 Thanks: 331 Thanked 463 Times in 245 Posts Mentioned: 1 Post(s)	I doubt you'd be able to vent much through them. Some people on this forum have tried to use them a engine bay heat extractors though (probably an easy thread to find).

05-09-2021, 10:30 AM	#4
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,450 Thanks: 2,726 Thanked 1,466 Times in 693 Posts Mentioned: 13 Post(s)	There is a discussion on garnish vents in the diy section.

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