MCA Suspension "Traction Mod" - Page 20 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

autoracer86 · 04-26-2024, 11:59 AM

Ordered Trailing arms and MCA traction mod

@RToyo86 did the arms come with new bolts ? The front bolts in your picture look new

RToyo86 · 04-26-2024, 02:43 PM

Quote:

Originally Posted by autoracer86

Ordered Trailing arms and MCA traction mod

@RToyo86 did the arms come with new bolts ? The front bolts in your picture look new

I ordered new hardware from Toyota. Old stuff was still in good shape surprisingly.

M0nk3y · 04-28-2024, 07:40 PM

Not everything is roses over here with the MCA.

I have wheel rub at bump with 17x10 due to correction.

Sent from my iPhone using Tapatalk

ayoshioka1 · 04-28-2024, 09:35 PM

yikes, maybe just trim the tab on the STI arm?

M0nk3y · 04-28-2024, 09:40 PM

Quote:

Originally Posted by ayoshioka1

yikes, maybe just trim the tab on the STI arm?

Yup. Grinder wheel to the rescue

Sent from my iPhone using Tapatalk

norcalpb · 04-29-2024, 06:31 PM

Quote:

Originally Posted by M0nk3y

Yup. Grinder wheel to the rescue

Sent from my iPhone using Tapatalk

Do the STi arms have larger “tabs” than the standard trailing arms? Curious as to why this is the first time this issue has shown up!

autoracer86 · 04-29-2024, 06:53 PM

Quote:

Originally Posted by norcalpb

Do the STi arms have larger “tabs” than the standard trailing arms? Curious as to why this is the first time this issue has shown up!

I wouldn't be surprised if it had something to do with the 17x10 wheels he runs.

RToyo86 · 04-29-2024, 08:05 PM

Quote:

Originally Posted by norcalpb

Do the STi arms have larger “tabs” than the standard trailing arms? Curious as to why this is the first time this issue has shown up!

Could have sworn I took a photo of stock vs STi but I would bet they're identical in dimensions.

M0nk3y · 04-30-2024, 08:17 AM

Quote:

Originally Posted by autoracer86

I wouldn't be surprised if it had something to do with the 17x10 wheels he runs.

It's not a function of the 17x10 wheels. The issue is occurring underneath extreme bump - IE loaded on the track.

I have MCS Suspension, so rear bump travel is quite extensive compared to any other OTS shock.

autoracer86 · 04-30-2024, 08:32 AM

Quote:

Originally Posted by M0nk3y

It's not a function of the 17x10 wheels. The issue is occurring underneath extreme bump - IE loaded on the track.

I have MCS Suspension, so rear bump travel is quite extensive compared to any other OTS shock.

Ah okay well seems like the fix was easy enough. Thanks for the explanation

RToyo86 · 04-30-2024, 04:27 PM

Could have sworn looking at rear end it is a touch lower but I did not measure to get definitive answer. I have photos from initial install of B6 on yellows with OEM wheels. Looks close from the photos.

autoracer86 · 04-30-2024, 06:34 PM

It seems to be that the ones reporting a change in ride height are running stock or lowering springs.

I don't think I seen anyone running much higher than stock rear spring rates report a change or maybe they never noticed lol

I will be taking measurements before and after hopefully there is no change

Tatsu333 · 04-30-2024, 06:42 PM

FWIW, I had no ride height change when I initially installed the V1 MCA Traction Mod on my stock Performance Pack suspension.

Can't comment on any change with lowering springs, because I installed my H&R springs (on stock dampers) after the Traction Mod was already installed, and same with my RCE SS1 coilovers.

RToyo86 · Yesterday, 11:37 AM

I've had mine installed enough to leave some impressions on the street.
Rear end feels a bit more sophisticated, less bothered by bumps.
I tested on throttle grip mid corner on familiar bumps with my regular commute and noticed the car doesn't bounce around when I try to get the rear to break free.

This morning I got the Conti's to break free and the rear just squats and is less dramatic. Previously rear end would react more to the bump which could upset the rear suspension requiring quicker snap of counter steer.

04-26-2024, 11:59 AM	#267
autoracer86 Senior Member Join Date: Jul 2022 Drives: Toyota GT86 Location: Ireland Posts: 463 Thanks: 401 Thanked 296 Times in 193 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Ordered Trailing arms and MCA traction mod @RToyo86 did the arms come with new bolts ? The front bolts in your picture look new __________________ 2014 GT86 Orange 6 Speed https://www.youtube.com/@spareroomracing3168/featured Build Thread: https://www.ft86club.com/forums/showthread.php?t=153004

04-28-2024, 07:40 PM	#269
M0nk3y Senior Member Join Date: Oct 2016 Drives: 2016 Scion FRS / Chevy Colorado Location: Ohio Posts: 646 Thanks: 51 Thanked 550 Times in 304 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Not everything is roses over here with the MCA. I have wheel rub at bump with 17x10 due to correction. Sent from my iPhone using Tapatalk __________________ Kyle H. - #89 STX

04-28-2024, 09:35 PM	#270
ayoshioka1 Senior Member Join Date: Apr 2019 Drives: 2019 BRZ / E36 325is Location: Irvine CA Posts: 110 Thanks: 15 Thanked 61 Times in 41 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	yikes, maybe just trim the tab on the STI arm? __________________ 23 GR86 Halo MT Prem - Racecomp Engineering SS-2 - Sayber Designs - Voltex - RE71RS - Project Mu

04-30-2024, 06:34 PM	#278
autoracer86 Senior Member Join Date: Jul 2022 Drives: Toyota GT86 Location: Ireland Posts: 463 Thanks: 401 Thanked 296 Times in 193 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	It seems to be that the ones reporting a change in ride height are running stock or lowering springs. I don't think I seen anyone running much higher than stock rear spring rates report a change or maybe they never noticed lol I will be taking measurements before and after hopefully there is no change __________________ 2014 GT86 Orange 6 Speed https://www.youtube.com/@spareroomracing3168/featured Build Thread: https://www.ft86club.com/forums/showthread.php?t=153004

04-30-2024, 06:42 PM	#279
Tatsu333 Senior Member Join Date: Jan 2017 Drives: 2020 BRZ Sport Tech RS Location: Canada Posts: 356 Thanks: 411 Thanked 246 Times in 140 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	FWIW, I had no ride height change when I initially installed the V1 MCA Traction Mod on my stock Performance Pack suspension. Can't comment on any change with lowering springs, because I installed my H&R springs (on stock dampers) after the Traction Mod was already installed, and same with my RCE SS1 coilovers. __________________ 2020 BRZ Sport Tech RS

04-30-2024, 04:27 PM	#277
RToyo86 Senior Member Join Date: Mar 2018 Drives: 17 Asphalt 86 Location: Ottawa Posts: 2,179 Thanks: 1,719 Thanked 2,228 Times in 1,138 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Could have sworn looking at rear end it is a touch lower but I did not measure to get definitive answer. I have photos from initial install of B6 on yellows with OEM wheels. Looks close from the photos.

Yesterday, 11:37 AM	#280
RToyo86 Senior Member Join Date: Mar 2018 Drives: 17 Asphalt 86 Location: Ottawa Posts: 2,179 Thanks: 1,719 Thanked 2,228 Times in 1,138 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	I've had mine installed enough to leave some impressions on the street. Rear end feels a bit more sophisticated, less bothered by bumps. I tested on throttle grip mid corner on familiar bumps with my regular commute and noticed the car doesn't bounce around when I try to get the rear to break free. This morning I got the Conti's to break free and the rear just squats and is less dramatic. Previously rear end would react more to the bump which could upset the rear suspension requiring quicker snap of counter steer.

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