swaybar preload - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

degozaru · 06-10-2020, 03:17 PM

Hey guys, I was wondering if anyone can school me on endlink preload. I just installed RSR Sports-i coilovers and love the handling it gives me. It would handle great UNTIL a certain point when traction control would kick in for seemingly no reason (I am certain the car had tons of grip remaining). I am guessing that the front sway bars are being preloaded and are causing trouble. Is there any way to tell for sure if this is the problem?

I might have not torqued the endlink correctly. I used a torque wrench, but I didn't have any way to hold the nut while I turned.

If it helps any, this is my sway bar with the car wheel turned into the car:
https://imgur.com/a/d99jNog

Thanks

Joveen · 06-10-2020, 03:49 PM

Drive up on ramps and adjust is what do for mine.

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jamal · 06-10-2020, 03:52 PM

If you have an adjustable endlink, you can get the car on a flat surface unbolt them, and take out any preload.

But before you get into that, has the car been corner balanced? Might want to do that first if not.

degozaru · 06-10-2020, 04:05 PM

Quote:

Originally Posted by jamal

If you have an adjustable endlink, you can get the car on a flat surface unbolt them, and take out any preload.

But before you get into that, has the car been corner balanced? Might want to do that first if not.

I am using stock front endlinks. Want to know if I need the adjustable endlinks before i buy

Joveen · 06-10-2020, 04:10 PM

Usually you need adjustable endlinks for going low.

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Racecomp Engineering · 06-10-2020, 04:20 PM

Is your alignment okay? Got a printout?

Similar funky handling on left and right turns?

Any noises?

What you can do is unbolt the endlinks from the strut with the car in the air and then lower the car to the ground. Now see where the endlinks line up compared to the strut mounting points. If they're not close, that's an issue and you might want to consider adjustable endlinks.

- Andrew

degozaru · 06-10-2020, 04:56 PM

Quote:

Originally Posted by Racecomp Engineering

Is your alignment okay? Got a printout?

Similar funky handling on left and right turns?

Any noises?

What you can do is unbolt the endlinks from the strut with the car in the air and then lower the car to the ground. Now see where the endlinks line up compared to the strut mounting points. If they're not close, that's an issue and you might want to consider adjustable endlinks.

- Andrew

I believe that it is more noticable on a certain turn (I forgot if it was right or left turn, should go see). I do not have an alignment yet. I was hoping to fix up all the issues before getting it aligned, although it could be an alignment problem, so I will be aligning it soon.

Racecomp Engineering · 06-10-2020, 05:14 PM

My first thought is alignment.

- Andrew

norcalpb · 06-10-2020, 06:17 PM

Quote:

Originally Posted by degozaru

I believe that it is more noticable on a certain turn (I forgot if it was right or left turn, should go see). I do not have an alignment yet. I was hoping to fix up all the issues before getting it aligned, although it could be an alignment problem, so I will be aligning it soon.

Just FYI, the only reason to wait for an alignment is to let the springs settle to their proper height. During this time you should not be pushing the car at all as that is extremely dangerous. I bet your tires are pointing in different directions like Crazy Eyes did the alignment himself.

strat61caster · 06-10-2020, 07:06 PM

The traction control is more conservative than your racist grandpa, it is not a reliable indicator of any issues imho.

cueball89 · 06-10-2020, 07:45 PM

I found the traction control was more sensitive if the wheels and steering wheel were not pointing straight after suspension work. I fixed the alignment and the hypersensitivity went away.

venturaII · 06-10-2020, 08:31 PM

If you're doing coilovers at the same time, do them first, then get a corner balanced alignment, THEN adjust your swaybar links for zero preload.

If no coilovers, then just adjust your links for zero preload, preferably on the alignment rack so you know you're level.

And if you're still on stock endlinks, then this question is academic, at best...

venturaII · 06-10-2020, 08:33 PM

...and it should go without saying that whoever does your corner balancing should also be disconnecting your swaybars BEFOREHAND...

TylerLieberman · 06-10-2020, 09:53 PM

Quote:

Originally Posted by strat61caster

The traction control is more conservative than your racist grandpa, it is not a reliable indicator of any issues imho.

Lolwut

06-10-2020, 03:17 PM	#1
degozaru Member Join Date: Jun 2016 Drives: 2016 oceanic frs Location: san diego, ca Posts: 80 Thanks: 6 Thanked 23 Times in 14 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	swaybar preload Hey guys, I was wondering if anyone can school me on endlink preload. I just installed RSR Sports-i coilovers and love the handling it gives me. It would handle great UNTIL a certain point when traction control would kick in for seemingly no reason (I am certain the car had tons of grip remaining). I am guessing that the front sway bars are being preloaded and are causing trouble. Is there any way to tell for sure if this is the problem? I might have not torqued the endlink correctly. I used a torque wrench, but I didn't have any way to hold the nut while I turned. If it helps any, this is my sway bar with the car wheel turned into the car: https://imgur.com/a/d99jNog Thanks Last edited by degozaru; 06-10-2020 at 03:28 PM.

06-10-2020, 08:31 PM	#12
venturaII Only users lose drugs. Join Date: Nov 2014 Drives: All the time Location: Shrewsbury upon Worcestershire Posts: 1,819 Thanks: 874 Thanked 1,067 Times in 674 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	If you're doing coilovers at the same time, do them first, then get a corner balanced alignment, THEN adjust your swaybar links for zero preload. If no coilovers, then just adjust your links for zero preload, preferably on the alignment rack so you know you're level. And if you're still on stock endlinks, then this question is academic, at best... __________________ "To know a thing well, know it's limits. Only when pushed beyond its tolerances will true nature be seen." Amtal Rule

06-10-2020, 08:33 PM	#13
venturaII Only users lose drugs. Join Date: Nov 2014 Drives: All the time Location: Shrewsbury upon Worcestershire Posts: 1,819 Thanks: 874 Thanked 1,067 Times in 674 Posts Mentioned: 3 Post(s) Tagged: 2 Thread(s)	...and it should go without saying that whoever does your corner balancing should also be disconnecting your swaybars BEFOREHAND... __________________ "To know a thing well, know it's limits. Only when pushed beyond its tolerances will true nature be seen." Amtal Rule

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06-10-2020, 03:49 PM	#2
Joveen Senior Member Join Date: Mar 2018 Drives: Bone stock Location: Windsor, CT Posts: 767 Thanks: 535 Thanked 232 Times in 162 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Drive up on ramps and adjust is what do for mine. Sent from my SM-N960U using Tapatalk

06-10-2020, 03:52 PM	#3
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)	If you have an adjustable endlink, you can get the car on a flat surface unbolt them, and take out any preload. But before you get into that, has the car been corner balanced? Might want to do that first if not.

06-10-2020, 04:10 PM	#5
Joveen Senior Member Join Date: Mar 2018 Drives: Bone stock Location: Windsor, CT Posts: 767 Thanks: 535 Thanked 232 Times in 162 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Usually you need adjustable endlinks for going low. Sent from my SM-N960U using Tapatalk

06-10-2020, 04:20 PM	#6
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,407 Thanks: 3,420 Thanked 7,242 Times in 2,963 Posts Mentioned: 303 Post(s) Tagged: 9 Thread(s)	Is your alignment okay? Got a printout? Similar funky handling on left and right turns? Any noises? What you can do is unbolt the endlinks from the strut with the car in the air and then lower the car to the ground. Now see where the endlinks line up compared to the strut mounting points. If they're not close, that's an issue and you might want to consider adjustable endlinks. - Andrew

06-10-2020, 05:14 PM	#8
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,407 Thanks: 3,420 Thanked 7,242 Times in 2,963 Posts Mentioned: 303 Post(s) Tagged: 9 Thread(s)	My first thought is alignment. - Andrew

06-10-2020, 07:45 PM	#11
cueball89 Senior Member Join Date: Apr 2016 Drives: 23 BRZ 15 Impreza Location: NY Posts: 160 Thanks: 58 Thanked 76 Times in 50 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I found the traction control was more sensitive if the wheels and steering wheel were not pointing straight after suspension work. I fixed the alignment and the hypersensitivity went away.

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