Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster Racing Forum

Post Reply
 
LinkBack Thread Tools Display Modes
Old 08-01-2017, 03:03 PM   #1
Registered User
 
truegearhead's Avatar
 
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978
Anyone running time trials with a wing?

I've been shocked how many NASA TT 4 cars run wings, including the one Boxster in the group. I'm not running one and I'm starting time trials (TT4) in two weeks. I'm not in a huge rush to be competitive and cover my car in aero but was curious what you guys thought. Is a wing worth anything in a 2.5l Boxster?



__________________
1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
truegearhead is offline   Reply With Quote
Old 08-06-2017, 12:44 PM   #2
Registered User
 
Join Date: Dec 2011
Location: SLC
Posts: 209
A wing would be nice, but you really have to think about drag and the real cost of aero.

You need to eek everything out of a spec (2.5) Boxster to be competitive in TT4 and you won't be. NASA really screwed to pooch on this by kicking everyone out the the higher alphabet classes to TT4.

Are you going to be significantly faster in the corners that the loss of top speed on the straights works for you? The tracks you run and data acquisition should help you decide.
MaxD is offline   Reply With Quote
Old 08-07-2017, 11:23 AM   #3
Registered User
 
Lemming's Avatar
 
Join Date: Apr 2016
Location: B'ham, AL
Posts: 266
I've not done it on my boxster, but did on my 3L 924S (220 rwhp, 2506 lbs race weight). Splitter and wing cost me 4 mph top speed coming into T10a at Road Atlanta, but saved me 1.5 seconds for the overall lap.
__________________
Tim
1998 986 (daily driver Frankencar)
1999 986 (SPB)
2001 986 S (parting)
2015 981 (sold)
Lemming is offline   Reply With Quote
Old 08-08-2017, 03:27 AM   #4
Registered User
 
truegearhead's Avatar
 
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978
Any wing recommendations? I don't think I'll run one this year but it might be something to play with this winter.
__________________
1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
truegearhead is offline   Reply With Quote
Old 08-08-2017, 04:57 AM   #5
Registered User
 
Lemming's Avatar
 
Join Date: Apr 2016
Location: B'ham, AL
Posts: 266
I've had two, a cheapo ebay ricer wing and a 70" predator from GT-racing. Both worked, but I would look around to see what is working on the boxster. Don't forget, it you add a wing, you will need a good splitter in the front to balance it out. Aero is a slippery slope, lot's of testing and changes will need to made to get it right.




__________________
Tim
1998 986 (daily driver Frankencar)
1999 986 (SPB)
2001 986 S (parting)
2015 981 (sold)
Lemming is offline   Reply With Quote
Old 08-08-2017, 06:49 AM   #6
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,793
Garage
Quote:
Originally Posted by Lemming View Post
I've had two, a cheapo ebay ricer wing and a 70" predator from GT-racing. Both worked, but I would look around to see what is working on the boxster. Don't forget, it you add a wing, you will need a good splitter in the front to balance it out. Aero is a slippery slope, lot's of testing and changes will need to made to get it right.
+986
You can't just throw something on the car and think it will do what you expect. Factory aero has gone through wind tunnel testing validate the effect it has.

I always laugh when people throw on fleabay aero and think it is going to improve things. Often it can have a detrimental effect.
__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
JayG is offline   Reply With Quote
Old 08-08-2017, 08:48 AM   #7
Registered User
 
Lemming's Avatar
 
Join Date: Apr 2016
Location: B'ham, AL
Posts: 266
Quote:
Originally Posted by JayG View Post
+986
I always laugh when people throw on fleabay aero and think it is going to improve things. Often it can have a detrimental effect.
So true. On the red 924S I had an issue with the front end lifting at T9 at Road Atlanta. My solution was to add a splitter. Next time there, the front end was planted and the ass end was all over the place (not just T9, but also the esses) and lap times when UP! Then I had to add a wing and start the balancing act. In the end, the car was much better, but it took time and effort to get it there. If you do not have a data acquisition system in the car, you will need one.

I will also say that one of the reasons that I sold the V8 944 was because I got sick and tired of the constant arms race ($$$) and track tuning that was required to win/podium in wt/hp class racing.
__________________
Tim
1998 986 (daily driver Frankencar)
1999 986 (SPB)
2001 986 S (parting)
2015 981 (sold)

Last edited by Lemming; 08-08-2017 at 08:51 AM.
Lemming is offline   Reply With Quote
Old 08-08-2017, 08:58 AM   #8
Registered User
 
Lemming's Avatar
 
Join Date: Apr 2016
Location: B'ham, AL
Posts: 266
I've not seen any wind tunnel data for the 986, but having that information is very useful. Something like below for the 924.
__________________
Tim
1998 986 (daily driver Frankencar)
1999 986 (SPB)
2001 986 S (parting)
2015 981 (sold)
Lemming is offline   Reply With Quote
Old 08-08-2017, 06:25 PM   #9
Track rat
 
Topless's Avatar
 
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
Garage
Aero is often very track dependent. In PCA Z8 we pay a lot of points for aero and it works well at Chuckwalla but kills you at AAA Speedway. I am sticking with tire grip for now.
__________________
2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
Topless is offline   Reply With Quote
Old 08-09-2017, 06:20 AM   #10
Registered User
 
rastta's Avatar
 
Join Date: Feb 2014
Location: Cowtown CA
Posts: 369
My car had aero on it when I bought it. Wing is in middle position. Front has a GT3 splitter. I added the canards. To be completely honest - I've never messed with it in terms of position. Car feels neutral and if it ain't broke. The canards did help keep the front more planted.

rastta is offline   Reply With Quote
Old 08-09-2017, 07:46 AM   #11
Registered User
 
truegearhead's Avatar
 
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978
Quote:
Originally Posted by rastta View Post
My car had aero on it when I bought it. Wing is in middle position. Front has a GT3 splitter. I added the canards. To be completely honest - I've never messed with it in terms of position. Car feels neutral and if it ain't broke. The canards did help keep the front more planted.

Wow that's a sharp looking car!
__________________
1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
truegearhead is offline   Reply With Quote
Old 08-09-2017, 10:23 AM   #12
Registered User
 
rastta's Avatar
 
Join Date: Feb 2014
Location: Cowtown CA
Posts: 369
Quote:
Originally Posted by truegearhead View Post
Wow that's a sharp looking car!
Thanks! It's so much fun!
rastta is offline   Reply With Quote
Old 08-14-2017, 03:32 AM   #13
Registered User
 
truegearhead's Avatar
 
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
Posts: 978



Perhaps I went to far....
__________________
1997 Boxster 4.2L Audi V8 Bi-Turbo
2003 911 C2
NASA HPDE Instructor
truegearhead is offline   Reply With Quote
Old 08-15-2017, 07:16 AM   #14
Registered User
 
Lemming's Avatar
 
Join Date: Apr 2016
Location: B'ham, AL
Posts: 266
Nothing wrong with a tall wing, but I am not so sure about that spoiler. IMO, the spoiler is adding mostly drag. If more downforce is needed, greater wing angle and/or gurney flap will give it to you without as much drag.
__________________
Tim
1998 986 (daily driver Frankencar)
1999 986 (SPB)
2001 986 S (parting)
2015 981 (sold)
Lemming is offline   Reply With Quote
Old 08-15-2017, 03:34 PM   #15
On the slippery slope
 
JayG's Avatar
 
Join Date: Mar 2014
Location: Austin and Palm Springs
Posts: 3,793
Garage
You need to wind tunnel test it or at least use a CFD application.
Otherwise you are literally pissing in the wind (pun intended)

__________________
2004 Boxster S 6 speed - DRL relay hack, Polaris AutoTop DIY
2004 996 Targa Tip
Instructor - San Diego region
2014 Porsche Performance Driving School
2020 BMW X3, 2013 Ram 1500, 2016 Cmax, 2004 F-150 "Big Red"
JayG is offline   Reply With Quote
Post Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 02:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page