follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Suspension | Chassis | Brakes -- Sponsored by 949 Racing

Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing.


User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-08-2024, 04:04 PM   #253
M0nk3y
Senior Member
 
Join Date: Oct 2016
Drives: 2016 Scion FRS / Chevy Colorado
Location: Ohio
Posts: 656
Thanks: 51
Thanked 562 Times in 312 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Yay for first Gen2 MCA install photos (at least here)

Cannot stress enough to chase the existing subframe bolt with Kroil or something to clean it out. SUPER easy to cross thread and mess up everything. My existing subframe bolts were not friendly to work with. Needed multiple times of soaking the hole and threads of the existing bolt and running it back and forth to clean up threads.

MCA’s install guide says to bolt first to the existing trailer arm location THEN bolt to subframe. I worked backwards. I don’t see what I’d want to create tension on the subframe bolt and increase chances of cross threading. IMO worked out great. And as you can see, still requires more effort to center that hole. Don’t fully secure down the subframe bolt until you have the other trailing arm bolt located, but yeah, you get the picture


















Sent from my iPhone using Tapatalk
__________________
Kyle H. - #89 STX
M0nk3y is offline   Reply With Quote
The Following 6 Users Say Thank You to M0nk3y For This Useful Post:
autoracer86 (04-08-2024), Compelica (04-10-2024), norcalpb (04-08-2024), RToyo86 (04-08-2024), Tatsu333 (04-08-2024), whataboutbob (04-13-2024)
Old 04-08-2024, 04:48 PM   #254
autoracer86
Senior Member
 
autoracer86's Avatar
 
Join Date: Jul 2022
Drives: Toyota GT86
Location: Ireland
Posts: 533
Thanks: 467
Thanked 359 Times in 225 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Did you use factory tq settings for the new bolts supplied or does Mca provide new specs ?
autoracer86 is offline   Reply With Quote
Old 04-08-2024, 04:54 PM   #255
M0nk3y
Senior Member
 
Join Date: Oct 2016
Drives: 2016 Scion FRS / Chevy Colorado
Location: Ohio
Posts: 656
Thanks: 51
Thanked 562 Times in 312 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by autoracer86 View Post
Did you use factory tq settings for the new bolts supplied or does Mca provide new specs ?

New supplied bolt for the subframe is spec’d at 107 ft-lbs by MCA. Then they recommend the other (2) bolts that go in the existing trailing arm and spacer to be torqued to existing OEM Spec (87 ft-lbs). Make sure you torque the bushing while loaded on the ground


Sent from my iPhone using Tapatalk
__________________
Kyle H. - #89 STX
M0nk3y is offline   Reply With Quote
The Following User Says Thank You to M0nk3y For This Useful Post:
autoracer86 (04-08-2024)
Old 04-08-2024, 09:27 PM   #256
RToyo86
Senior Member
 
RToyo86's Avatar
 
Join Date: Mar 2018
Drives: 17 Asphalt 86
Location: Ottawa
Posts: 2,223
Thanks: 1,759
Thanked 2,304 Times in 1,168 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Noted with subframe bolt. I usually hit bolts with the drill brush to clean up junk but blasting subframe hole is a good idea.
RToyo86 is offline   Reply With Quote
Old 04-10-2024, 06:16 AM   #257
gen3v8
30 minute maintenance
 
gen3v8's Avatar
 
Join Date: Oct 2020
Drives: My18 wrxsti My19 brzts
Location: Botany Bay
Posts: 1,151
Thanks: 746
Thanked 1,195 Times in 614 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by M0nk3y View Post
.
Have you tried them. I`m curious.
__________________
Wait until my Flex capacitor hits 88
gen3v8 is offline   Reply With Quote
Old 04-10-2024, 08:26 AM   #258
M0nk3y
Senior Member
 
Join Date: Oct 2016
Drives: 2016 Scion FRS / Chevy Colorado
Location: Ohio
Posts: 656
Thanks: 51
Thanked 562 Times in 312 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by gen3v8 View Post
Have you tried them. I`m curious.
Yup, it's honestly a night and day difference and truthfully I'm amazed I went this long without any sort of trailing arm correction

FWIW, I have MCS 2Way Remotes, 9k/11k, it's not compromised suspension by any means.

I would say the most immediate impact was the elimination of the "pogo" effect off large bumps or dips in the road. The rear just simply feels more in sync with what the front was doing.

First track even April 25th, I made a ton of changes to the car, but I'm sure I'll be able to see what this is doing to help. FWIW I have STi Trailing Arms on the way as well
__________________
Kyle H. - #89 STX
M0nk3y is offline   Reply With Quote
The Following 6 Users Say Thank You to M0nk3y For This Useful Post:
gen3v8 (04-10-2024), kevaughan (04-25-2024), norcalpb (04-10-2024), RToyo86 (04-10-2024), strat61caster (04-10-2024), whataboutbob (04-10-2024)
Old 04-10-2024, 12:22 PM   #259
Tatsu333
Senior Member
 
Join Date: Jan 2017
Drives: 2020 BRZ Sport Tech RS
Location: Canada
Posts: 362
Thanks: 427
Thanked 252 Times in 143 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
FYI for anyone with the first generation (or just wondering what the difference is), I emailed MCA to ask for details on the differences and whether there would be any reason to upgrade, and here was their (very prompt) response:

"There is nothing functionally different, just a few minor design improvements. The main one being a rubber bush assembly that allows for some additional movement between the cross-member and the chassis.

Overall, this is a better and more refined product but we wouldn’t say it is critical to upgrade."
__________________
Tatsu333 is offline   Reply With Quote
The Following 8 Users Say Thank You to Tatsu333 For This Useful Post:
autoracer86 (04-11-2024), endless_pain (05-16-2024), gen3v8 (04-10-2024), kevaughan (04-25-2024), Ohio Enthusiast (04-10-2024), Racecomp Engineering (04-13-2024), RToyo86 (04-11-2024), whataboutbob (04-11-2024)
Old 04-13-2024, 12:59 AM   #260
RToyo86
Senior Member
 
RToyo86's Avatar
 
Join Date: Mar 2018
Drives: 17 Asphalt 86
Location: Ottawa
Posts: 2,223
Thanks: 1,759
Thanked 2,304 Times in 1,168 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Fast shipping!
Mine arrived today, they're very generous with their swag too! 8 stickers and a jet tag. Thanks McA!
Now just waiting on trailing arm to install everything together.



Last edited by RToyo86; 04-13-2024 at 01:38 AM.
RToyo86 is offline   Reply With Quote
The Following 7 Users Say Thank You to RToyo86 For This Useful Post:
autoracer86 (04-13-2024), DustinS (04-13-2024), kevaughan (04-16-2024), norcalpb (04-15-2024), Racecomp Engineering (04-13-2024), Tatsu333 (04-15-2024), whataboutbob (04-13-2024)
Old 04-15-2024, 02:08 AM   #261
gen3v8
30 minute maintenance
 
gen3v8's Avatar
 
Join Date: Oct 2020
Drives: My18 wrxsti My19 brzts
Location: Botany Bay
Posts: 1,151
Thanks: 746
Thanked 1,195 Times in 614 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Ordered mine on Monday and they arrived Thursday. I fitted them today and test drove it briefly with a full tank. All my whiteline bushes made fitting tight. The car still has easy wheelspin power but it doesn`t snap sideways so aggressively now. I`ll be taking it to the mountain twisties tomorrow for a better shakedown.
__________________
Wait until my Flex capacitor hits 88
gen3v8 is offline   Reply With Quote
The Following 3 Users Say Thank You to gen3v8 For This Useful Post:
autoracer86 (04-15-2024), RToyo86 (04-15-2024), Tatsu333 (04-15-2024)
Old 04-25-2024, 06:22 PM   #262
RToyo86
Senior Member
 
RToyo86's Avatar
 
Join Date: Mar 2018
Drives: 17 Asphalt 86
Location: Ottawa
Posts: 2,223
Thanks: 1,759
Thanked 2,304 Times in 1,168 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Parts installed, just getting alignment done now


RToyo86 is offline   Reply With Quote
The Following 3 Users Say Thank You to RToyo86 For This Useful Post:
autoracer86 (04-25-2024), gen3v8 (04-26-2024), kevaughan (04-25-2024)
Old 04-25-2024, 06:28 PM   #263
autoracer86
Senior Member
 
autoracer86's Avatar
 
Join Date: Jul 2022
Drives: Toyota GT86
Location: Ireland
Posts: 533
Thanks: 467
Thanked 359 Times in 225 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Sweet. Keep us updated
autoracer86 is offline   Reply With Quote
Old 04-25-2024, 09:53 PM   #264
Ohio Enthusiast
Senior Member
 
Join Date: Apr 2020
Drives: 2018 BRZ
Location: Dayton, OH
Posts: 936
Thanks: 1,395
Thanked 791 Times in 451 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
I'll share my experience with the GP Sport mod on my BRZ. Fairly straightforward to install, both the relocating piece and the solid bushing insert in the rear of the subframe. I did one corner at a time and didn't support the subframe. The biggest pain was the parking brake cable bracket, which just didn't want to align with the cutout when tightening the small bolt holding it.

I had the Whiteline rear subframe inserts (KDT922) already installed on the car. Both the relocating piece and the solid insert have the same shape as the bottom Whiteline insert and they fit the same in the subframe bushing. I left the top part of the subframe inserts in place and didn't notice too much of a difference in that regard.

After installation, it looks like the rear lowered by about 5-8 mm. Sadly I didn't measure before and after, and it's estimated by look and older measurements. My best gauge for the lowering is that a speed bump at my kid's school which used to scrape at the rear only rarely, now scrapes all the time unless I take the opposite lane which is lower.

For driving impressions, I didn't have the chance to go on a track or autocross, but I did drive it in anger on some of the roads I'm very familiar with and continued to lightly oversteer on some specific corners in my daily drives.
First, the rear feels more comfortable over bumps and dips, especially sharp ones.
Second, it's harder to break traction in the dry, in a similar way that moving from the OEM Primacy tires to UHP/Max tires was. I need to be very deliberate in most corners to get oversteer that really requires counter steering to correct. Less deliberate application of throttle causes noticeable rotation but no need for counter steering. I.e. still feel the RWD working. When the car does oversteer, it's mostly gentler and less snappy. Accelerating in a straight line, it's also harder to spin the wheels in 1st or get a chirp in the 1st to 2nd upshift.
Finally, in the wet the car has quite an interesting character - instead of wheel hop the rear tires slide more, causing the rear to step out more easily, and it takes more time for the rear to regain traction. This is mostly the case when accelerating in a straight line, where before the mod being aggressive off the line from a red light (with painted lines and worn intersection asphalt) the rear would hop and spin but letting off the gas would regain traction. Now the rear would slip and slide around and letting off the gas needs to be a second or two longer before I can apply throttle again. When turning it's a similar story, with more grip that turns into even more controllable slides.

Overall I'm happy with this mod, if anything just for the sake of the variety in driving experience after 4 years with the BRZ. I'm still undecided if the daily fun-factor was increased or reduced, and I plan on doing a couple of track days and some back road trips to more fully explore the car with the mod.
Attached Images
     
Ohio Enthusiast is offline   Reply With Quote
The Following 3 Users Say Thank You to Ohio Enthusiast For This Useful Post:
DocWalt (04-26-2024), endless_pain (05-16-2024), kevaughan (04-25-2024)
Old 04-26-2024, 12:52 AM   #265
Enigmeerkat
Enigmeerkat
 
Enigmeerkat's Avatar
 
Join Date: Feb 2019
Drives: 2015 Toyota 86 GTS
Location: NSW
Posts: 40
Thanks: 16
Thanked 33 Times in 17 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Sorry for the noob question, but I have a Gen 1 with stock suspension except for Whiteline Swaybars. Would this upgrade still be relevant for my setup? Or does it better suit cars with coilovers?
__________________
-----------------------------
2015 Toyota 86 GTS
- Ecutek w/ Flex Fuel, Xtreme Stage 1 Organic Clutch
- PSR UEL Header, Invidia R400 Catback
- Whiteline Swaybars, 18" ROH Blue Evo R
Enigmeerkat is offline   Reply With Quote
Old 04-26-2024, 03:23 AM   #266
autoracer86
Senior Member
 
autoracer86's Avatar
 
Join Date: Jul 2022
Drives: Toyota GT86
Location: Ireland
Posts: 533
Thanks: 467
Thanked 359 Times in 225 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Enigmeerkat View Post
Sorry for the noob question, but I have a Gen 1 with stock suspension except for Whiteline Swaybars. Would this upgrade still be relevant for my setup? Or does it better suit cars with coilovers?
Stock suspension is even better than coilovers for this mod so you’re good to go.

As you can see in the post above some users have noticed a drop in rear ride height after install so you might have a bit of negative rake which is probably a good thing performance wise but you might not like the look of the rear being lower than the front.
autoracer86 is offline   Reply With Quote
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Needed opinions: Does debadging "Subaru" and "BRZ" cheapen the car? davidchoi Cosmetic Modification (Interior/Exterior/Lighting) 49 11-22-2014 10:17 PM
"Clicking" or "knocking" caused by rear seat pull down lever. husker741 Issues | Warranty | Recalls / TSB 6 11-27-2013 02:30 PM
"My Dealer told me {insert dumb idea}" (was "Toyota/Subary Partnership Cancelled?") levifig BRZ First-Gen (2012+) -- General Topics 48 08-09-2013 06:34 PM
Factory suspension "sticktion" andrew20195 Suspension | Chassis | Brakes -- Sponsored by 949 Racing 1 04-02-2013 02:49 PM
"Official" Suspension/Brake Thread NYC BRZ Suspension | Chassis | Brakes -- Sponsored by 949 Racing 27 06-27-2012 09:14 PM


All times are GMT -4. The time now is 10:32 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.