Snap oversteer??? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

strat61caster · 07-02-2020, 01:51 PM

How many track days/sessions on the tires? Most tires lose grip after 10-12 heat cycles even though they have plenty of tread left.

wparsons · 07-03-2020, 09:01 PM

I'd swap the tires front/rear and see if it follows the tires. Was it noticeably worse one side more than the other?

mamamiaellis · 07-04-2020, 12:53 AM

The tires has 2 track days.

I tried rotating the tires. Still same issue. Both left and right turns.

steverife · 07-07-2020, 09:23 AM

Have you checked for sway bar bind?

mamamiaellis · 07-14-2020, 02:03 PM

Hey steverife,

Not sure what swaybar bind is.
But small update.

Turns out my rear endlinks are totally shot.
The rear lca bushing was shot and the bushing in the knuckle, i can move with my finger. ( theres resistance, but i can still move it.)

Im assuming these are the reasons for my unpredicranle handling.

Has anyone replaced the bushing in the rear knuckle before?

NoHaveMSG · 07-14-2020, 02:17 PM

Quote:

Originally Posted by mamamiaellis

Has anyone replaced the bushing in the rear knuckle before?

Hydraulic press is your good friend here.

TommyW · 07-14-2020, 05:42 PM

Well you're obviously losing rear grip. Snapping on exit or is it starting to come undone just after mid corner?? Are you on throttle or still off after the apex?

It sounds like a tire pressure issue combined with a small technique issue?

mamamiaellis · 07-15-2020, 04:57 PM

Its coming undone just after the apex.

I am definitely not the most adept driver. Always learning.
But it never felt like thisbefore. Even the slightest bit of gas would cause massive oversteer. Im not the most aggressive driver so it's just strange to me this happened suddenly lol.

I checked my car out. Both boots on my rear endlinks were completely open and oozing grease. Both lca and rear knuckle bushing i can move. The knuckle bushing is more resistant, but if i try hard enough, i can move them with my fingers.

I assume this was the issue. Ha d a shop BRIEFLY inspect my car. No frame damage lol.
I replaced alot of parts. Will prob get it aligned this weekend or next and see if it's any better..

Thanks for everyone's help

CSG Mike · 07-15-2020, 05:24 PM

Come out to the next 86cup day and i can evaluate the car for you.

strat61caster · 07-15-2020, 09:22 PM

Quote:

Originally Posted by mamamiaellis

The knuckle bushing is more resistant, but if i try hard enough, i can move them with my fingers.

They're supposed to move in some directions, but not others so hopefully you aren't tearing it apart for nothing.

mamamiaellis · 07-20-2020, 01:59 PM

Thanks mike for the offer. I might take you up on that in the future.

But i have all of my parts in. And i got it realigned.

While i was at it, i decided to upgrade my outer front tie rod for funzies.

But the bumpsteer is dangerously close to the wheel. Anyone know od solutions to clearance issues for outer tie rods?

My alignment guy says unfortunately rn, its the best he could do. Says theyre like thay by design.

They are very close. Maybe 2-3mm?

Thanks

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07-04-2020, 12:53 AM	#17
mamamiaellis Member Join Date: Apr 2014 Drives: brz Location: SoCal Posts: 77 Thanks: 0 Thanked 9 Times in 9 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	The tires has 2 track days. I tried rotating the tires. Still same issue. Both left and right turns.

07-07-2020, 09:23 AM	#18
steverife Senior Member Join Date: Feb 2018 Drives: 2016 Scion FRS Location: Knoxville, TN Posts: 457 Thanks: 52 Thanked 275 Times in 181 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Have you checked for sway bar bind?

07-14-2020, 02:03 PM	#19
mamamiaellis Member Join Date: Apr 2014 Drives: brz Location: SoCal Posts: 77 Thanks: 0 Thanked 9 Times in 9 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Hey steverife, Not sure what swaybar bind is. But small update. Turns out my rear endlinks are totally shot. The rear lca bushing was shot and the bushing in the knuckle, i can move with my finger. ( theres resistance, but i can still move it.) Im assuming these are the reasons for my unpredicranle handling. Has anyone replaced the bushing in the rear knuckle before?

07-14-2020, 05:42 PM	#21
TommyW Senior Member Join Date: Feb 2017 Drives: '13 Whiteout Location: San Clemente Posts: 1,491 Thanks: 496 Thanked 1,242 Times in 673 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Well you're obviously losing rear grip. Snapping on exit or is it starting to come undone just after mid corner?? Are you on throttle or still off after the apex? It sounds like a tire pressure issue combined with a small technique issue?

07-15-2020, 04:57 PM	#22
mamamiaellis Member Join Date: Apr 2014 Drives: brz Location: SoCal Posts: 77 Thanks: 0 Thanked 9 Times in 9 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Its coming undone just after the apex. I am definitely not the most adept driver. Always learning. But it never felt like thisbefore. Even the slightest bit of gas would cause massive oversteer. Im not the most aggressive driver so it's just strange to me this happened suddenly lol. I checked my car out. Both boots on my rear endlinks were completely open and oozing grease. Both lca and rear knuckle bushing i can move. The knuckle bushing is more resistant, but if i try hard enough, i can move them with my fingers. I assume this was the issue. Ha d a shop BRIEFLY inspect my car. No frame damage lol. I replaced alot of parts. Will prob get it aligned this weekend or next and see if it's any better.. Thanks for everyone's help

07-15-2020, 05:24 PM	#23
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,530 Thanks: 8,920 Thanked 14,177 Times in 6,835 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	Come out to the next 86cup day and i can evaluate the car for you.

07-20-2020, 01:59 PM	#25
mamamiaellis Member Join Date: Apr 2014 Drives: brz Location: SoCal Posts: 77 Thanks: 0 Thanked 9 Times in 9 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thanks mike for the offer. I might take you up on that in the future. But i have all of my parts in. And i got it realigned. While i was at it, i decided to upgrade my outer front tie rod for funzies. But the bumpsteer is dangerously close to the wheel. Anyone know od solutions to clearance issues for outer tie rods? My alignment guy says unfortunately rn, its the best he could do. Says theyre like thay by design. They are very close. Maybe 2-3mm? Thanks

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