sti control arm on brz? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mokinbird87 · 11-12-2015, 02:42 PM

so, I plan on installing the PERRIN PSRS kit, but do not want to try and press out the bushings on my OEM control arm as I may revert the car back to stock, etc... One idea i had was to purchase a used STI control arm, which if i remember correctly is the same design as our arm, just installed reverse. I remember from my NASIOC days the weight saving from the stamped piece (which is on our cars) to the aluminum piece was not much, but the aluminum arm is much stiffer.

has anyone done this before?

photo of STI GR arm for reference:

FRZ arm:

PERRIN_Chris · 11-13-2015, 11:52 AM

We haven't installed STI front control arms in the BRZ before, so we're not sure how they'll fit, they might be compatible. Has anyone else tried it? That would be a nice upgrade!

mokinbird87 · 11-13-2015, 12:18 PM

looks like i might be the guinea pig trying it...

mav1178 · 11-13-2015, 12:48 PM

What year STi?

Jeff@Racer X Fab · 11-13-2015, 03:39 PM

I'm also not sure if the arm would physically bolt on to the FR-S/BRZ mounting points. I do know that the ball joint from the STi is NOT compatible with the FR-S/BRZ.

continuecrushing · 11-13-2015, 03:52 PM

sub'd

NyC Zn6 · 11-13-2015, 03:54 PM

Quote:

Originally Posted by racerx1715

I'm also not sure if the arm would physically bolt on to the FR-S/BRZ mounting points. I do know that the ball joint from the STi is NOT compatible with the FR-S/BRZ.

so basically its a no go for OP

mokinbird87 · 11-13-2015, 03:58 PM

Quote:

Originally Posted by mav1178

What year STi?

i think any GR would work? I dunno for sure but I`ve heard that the BRZ arm is just a WRX (GR) arm installed rotated.

mokinbird87 · 11-16-2015, 11:24 AM

turninconcept confirmed it would NOT fit..

redlined600 · 12-25-2016, 10:21 AM

Quote:

Originally Posted by mokinbird87

turninconcept confirmed it would NOT fit..

I know this is old, but was it clarified as to why? Is it a non starter or something that could be easily(relatively) overcome.

mokinbird87 · 12-28-2016, 03:25 PM

Quote:

Originally Posted by redlined600

I know this is old, but was it clarified as to why? Is it a non starter or something that could be easily(relatively) overcome.

they didnt really elaborate.. and now that SPL front control arm has released no need for anything else

jamal · 12-28-2016, 05:36 PM

Ball joints are different, that would be the main issue assuming the inner mounts line up. On the other subarus the ball joint sits in the upright, not the control arm. So there is a smaller conical seat that would not be compatible with the brz upright and ball joint.

And then spacing between the inner mounts is probably not the same anyway, and who knows what it would do to caster if they did actually line up. Probably would place the wheel too far back in the wheel well.

Cusco also makes arms that look pretty cool.

Captain Snooze · 12-29-2016, 12:15 AM

Quote:

Originally Posted by jamal

Cusco also makes arms that look pretty cool.

The SPL version looks pretty hot.

Name: FRS_FLCA1_web__98636.1472852423.1280.1280.jpg
Views: 1234
Size: 42.3 KB

FastWhite · 12-29-2016, 12:32 AM

Try here!!

http://racerxfabrication.com/

Sent from my iPhone using Tapatalk

11-12-2015, 02:42 PM	#1
mokinbird87 BOXER FR Join Date: Oct 2011 Drives: WRB BRZ Limited Location: irvine, ca Posts: 752 Thanks: 393 Thanked 335 Times in 171 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	sti control arm on brz? so, I plan on installing the PERRIN PSRS kit, but do not want to try and press out the bushings on my OEM control arm as I may revert the car back to stock, etc... One idea i had was to purchase a used STI control arm, which if i remember correctly is the same design as our arm, just installed reverse. I remember from my NASIOC days the weight saving from the stamped piece (which is on our cars) to the aluminum piece was not much, but the aluminum arm is much stiffer. has anyone done this before? photo of STI GR arm for reference: FRZ arm: __________________ Build Thread of the "STI theme BRZ"http://www.ft86club.com/forums/showthread.php?t=61522

11-13-2015, 12:18 PM	#3
mokinbird87 BOXER FR Join Date: Oct 2011 Drives: WRB BRZ Limited Location: irvine, ca Posts: 752 Thanks: 393 Thanked 335 Times in 171 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	looks like i might be the guinea pig trying it... __________________ Build Thread of the "STI theme BRZ"http://www.ft86club.com/forums/showthread.php?t=61522

11-16-2015, 11:24 AM	#9
mokinbird87 BOXER FR Join Date: Oct 2011 Drives: WRB BRZ Limited Location: irvine, ca Posts: 752 Thanks: 393 Thanked 335 Times in 171 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	turninconcept confirmed it would NOT fit.. __________________ Build Thread of the "STI theme BRZ"http://www.ft86club.com/forums/showthread.php?t=61522

12-28-2016, 05:36 PM	#12
jamal Senior Member Join Date: Nov 2011 Drives: Legacy GT Location: compton Posts: 534 Thanks: 9 Thanked 365 Times in 204 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Ball joints are different, that would be the main issue assuming the inner mounts line up. On the other subarus the ball joint sits in the upright, not the control arm. So there is a smaller conical seat that would not be compatible with the brz upright and ball joint. And then spacing between the inner mounts is probably not the same anyway, and who knows what it would do to caster if they did actually line up. Probably would place the wheel too far back in the wheel well. Cusco also makes arms that look pretty cool. Last edited by jamal; 12-29-2016 at 02:28 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

11-13-2015, 12:48 PM	#4
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,093 Times in 3,029 Posts Mentioned: 95 Post(s) Tagged: 3 Thread(s)	What year STi?

11-13-2015, 03:39 PM	#5
Jeff@Racer X Fab Senior Member Join Date: Aug 2012 Drives: Subaru BRZ, Toyota MR2 Turbo Location: Lansing, MI Posts: 321 Thanks: 92 Thanked 340 Times in 135 Posts Mentioned: 23 Post(s) Tagged: 1 Thread(s)	I'm also not sure if the arm would physically bolt on to the FR-S/BRZ mounting points. I do know that the ball joint from the STi is NOT compatible with the FR-S/BRZ.

11-13-2015, 03:52 PM	#6
continuecrushing Join Date: Mar 2013 Drives: 2013 Firestorm FRS Location: Lake Elsinore, CA Posts: 2,707 Thanks: 1,231 Thanked 2,144 Times in 1,003 Posts Mentioned: 73 Post(s) Tagged: 2 Thread(s)	sub'd

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to disable Traction Control (TC) and Vehicle Stability Control (VSC) Completely	Sigh-on-Rice	DIY (Do-It-Yourself) Guides	58	03-02-2015 01:48 PM
Traction Control vs. Stabilization Control vs. Sport Question	MurderRider	Scion FR-S / Toyota 86 GT86 General Forum	26	08-07-2014 12:56 PM
WTB: Front Lower Control Arm and Rear Upper Control Arm	YDNA	Brakes, Suspension, Chassis	0	11-10-2013 04:40 AM
ok this traction control is... out of control	dori.	BRZ First-Gen (2012+) -- General Topics	13	01-31-2013 06:05 PM
Disabling Traction Control (TC) and Vehicle Stability Control (VSC) Completely	BabyGodzillaGTi-R	BRZ First-Gen (2012+) -- General Topics	40	04-25-2012 11:20 AM

User Name		Remember Me?
Password