Best way to brace this super wobbly wing? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

texastwurkt3am · 08-11-2018, 12:10 AM

I recently got and installed the GTC-200 Drag wing from APR and as the video shows, it needs some bracing. Ideas?

Mr.ac · 08-11-2018, 12:23 AM

Yeah lose the wing.
Lol I'm joking.
Get larger plates on the underside mounting holes.

bcj · 08-11-2018, 03:20 AM

You need cinder blocks between the thin trunk alloy sheet and the chassis.

GrantedTaken · 08-11-2018, 11:34 AM

Looks like the trunk is too flimsy to support it.

Stang70Fastback · 08-11-2018, 11:47 AM

It looks like you mounted it to the sheetmetal, and not to anything structural...

gtengr · 08-11-2018, 12:15 PM

Can you post a pic of the underside of the trunk that shows where the bolts come thru? You're going to need a custom plate on the underside that ties into the frame of the trunk lid.

texastwurkt3am · 08-13-2018, 04:50 PM

Quote:

Originally Posted by Stang70Fastback

It looks like you mounted it to the sheetmetal, and not to anything structural...

Yeah... first time for everything right? Haha

Quote:

Originally Posted by gtengr

Can you post a pic of the underside of the trunk that shows where the bolts come thru? You're going to need a custom plate on the underside that ties into the frame of the trunk lid.

Sorry, my life is a mess and I forgot I made this post https://imgur.com/a/lZ2Kqnh

Yoshoobaroo · 08-13-2018, 05:39 PM

I'd fill the cavity where the bolts are with dense structural foam. Nice and light, and it'll stiffen the panel right up.

http://www.carbonfiberglass.com/Foam...-coverage.html

Leonardo · 08-13-2018, 06:25 PM

OP, If you use foam, I would highly suggest using low expansion spray foam. If you use the 3X expansion, it can warp the trunk lid. I watched my friend destroy his trunk lid by using the stuff that expands too much.

Edit: Saw the underside photo. Forget expansion foam. Either: Remove the wing and sell it. Use money to fix holes in trunk. OR Take the wing off, build underside brace plates, do body work on the damaged area - then paint, now re-install the wing. OR Get a new trunk lid and start over. Good luck!

Yoshoobaroo · 08-13-2018, 06:38 PM

The key is to be patient and do a little at the time. If your foam expands 3X, only fill 20% of the cavity. Rinse and repeat. And don't pour foam in a large cavity through a small hole, than can cause a blockage and generate pressure.

JoeC · 08-13-2018, 09:58 PM

Quote:

Originally Posted by texastwurkt3am

Yeah... first time for everything right? Haha

Sorry, my life is a mess and I forgot I made this post https://imgur.com/a/lZ2Kqnh

what on earth did you use to cut those access holes?

SuperTom · 08-13-2018, 11:08 PM

Quote:

Originally Posted by Leonardo

OP, If you use foam, I would highly suggest using low expansion spray foam. If you use the 3X expansion, it can warp the trunk lid. I watched my friend destroy his trunk lid by using the stuff that expands too much.

could he use that stuff from home depot great stuff or whatever its called

Leonardo · 08-14-2018, 12:48 AM

Quote:

Originally Posted by SuperTom

could he use that stuff from home depot great stuff or whatever its called

Yes, they sell three different expansion levels, depending on what you want.

I think longer bolts and new under mount plates are what is needed though. Forget the foam.

Brink · 08-14-2018, 01:18 AM

Quote:

Originally Posted by JoeC

what on earth did you use to cut those access holes?

Looks like a drill maybe?

08-11-2018, 12:10 AM	#1
texastwurkt3am Member Join Date: Sep 2017 Drives: '17 PP BRZ Location: DFW, TX Posts: 65 Thanks: 59 Thanked 16 Times in 13 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Best way to brace this super wobbly wing? I recently got and installed the GTC-200 Drag wing from APR and as the video shows, it needs some bracing. Ideas? __________________ FT86 Speed Factory Catted UEL Headers, Motiv Overpipe, Ark Test Pipe, Ark Grip Exhaust, GrimmSpeed Intake, V4 Stage 2 OFT Tune, Illusion Red Powdercoated Enkei Raijin 18x8 Squared, Eibach Pro Springs, MTEC Clutch Spring, Audio Upgrade, Random Accessories

08-11-2018, 12:23 AM	#2
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,368 Thanks: 709 Thanked 1,559 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	Yeah lose the wing. Lol I'm joking. Get larger plates on the underside mounting holes. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

08-11-2018, 11:47 AM	#5
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,100 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	It looks like you mounted it to the sheetmetal, and not to anything structural... __________________ . Check out my blog, read all about my BRZ adventures, and oogle my sweet cell-phone photos! You can also find me on Instagram, and on Facebook.

08-13-2018, 06:25 PM	#9
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,293 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	OP, If you use foam, I would highly suggest using low expansion spray foam. If you use the 3X expansion, it can warp the trunk lid. I watched my friend destroy his trunk lid by using the stuff that expands too much. Edit: Saw the underside photo. Forget expansion foam. Either: Remove the wing and sell it. Use money to fix holes in trunk. OR Take the wing off, build underside brace plates, do body work on the damaged area - then paint, now re-install the wing. OR Get a new trunk lid and start over. Good luck! __________________ I LIKE TIRES! Last edited by Leonardo; 08-14-2018 at 02:09 PM.

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GrantedTaken Banned Join Date: Nov 2017 Drives: BRZ Location: The Sun Posts: 426 Thanks: 30 Thanked 230 Times in 113 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Looks like the trunk is too flimsy to support it.

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gtengr Senior Member Join Date: Nov 2016 Drives: 2017 BRZ Location: USA Posts: 655 Thanks: 326 Thanked 258 Times in 177 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Can you post a pic of the underside of the trunk that shows where the bolts come thru? You're going to need a custom plate on the underside that ties into the frame of the trunk lid.

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