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-   Suspension | Chassis | Brakes -- Sponsored by 949 Racing (https://www.ft86club.com/forums/forumdisplay.php?f=59)
-   -   Front sway bar links with KW-based coilovers (https://www.ft86club.com/forums/showthread.php?t=137047)

Racecomp Engineering 06-19-2020 03:24 PM

Quote:

Originally Posted by pslater (Post 3342179)
hi andrew,


i just installed some lightly-used Tarmac 0's and while the performance is awesome, i am also getting some odd noises.



when the car is cold, i will get some weird groaning when turning the wheel maybe the first 5-7 times, and it's clunking over bumps/imperfections at very low speed. when the car is warmed up, the groaning and clunking goes away.



historically this latter noise has always been a slightly-loose top mount nut, but it's definitely tight. i do suspect that the mount is tired (it came used with the coilovers), so i have some Group N mounts on order. i suspect that will cure that. i also have some adjustable end links on order as the stock links are quite close to the lower front control arms.



as for the groaning... it does seem like it's the sound of the spring moving; shouldn't the bearing in the top mount allow the spring stay put? (i.e., the entire assembly turns.) if the spring is indeed turning, i guess a torrington bearing would work in between the spring and the perch, but i've never had to do that before with stock strut mounts (always with spherical bearing camber/caster plates, though).


this is on a 2018 BRZ RS (Performance Pack up here in canada) with roughly 9K miles on it, so everything else is super-fresh. the nice slotting of the upper strut housing bolt holes allowed me to dial in some negative camber, and that coupled with the spring rate/damping harmony have really amplified the joy i get from this car. thanks for the great setup!


peter

If the top mount is indeed a little old and crusty, that could also cause some of the groaning while turning the wheel. Start there and let me know how it goes. :)

- Andrew

pslater 06-22-2020 11:54 AM

Quote:

Originally Posted by Racecomp Engineering (Post 3342451)
If the top mount is indeed a little old and crusty, that could also cause some of the groaning while turning the wheel. Start there and let me know how it goes. :)

- Andrew


will do. thanks andrew.

trinidadj 06-23-2020 11:37 AM

2 Attachment(s)
Hey just to update everyone that the whiteline KLC180-215 endlinks worked great for fixing my sway bar and lower control arm from touching. See the pics below. I used some home made wheel cribs at all 4 wheels and adjusted the links until the pre load was gone.

pslater 06-23-2020 11:50 AM

thanks for the update! nice job on the blocks, too. :)

i am patiently waiting for my set of these endlinks too. they apparently an unobtanium in canada...

Mike_ZN6 06-23-2020 11:55 AM

Has anyone used the Hotchkis front/rear endlinks with KW based coilovers? I have RCE SS-1 and I noticed the geometry of the stock endlinks does not look correct when the car is very low. The Hotchkis endlinks are very low profile and feature stock looking bushings rather than spherical so I am interested in getting them before my next alignment, but I am not sure if they are short enough?

pslater 07-07-2020 01:16 PM

Quote:

Originally Posted by Mike_ZN6 (Post 3343309)
Has anyone used the Hotchkis front/rear endlinks with KW based coilovers? I have RCE SS-1 and I noticed the geometry of the stock endlinks does not look correct when the car is very low. The Hotchkis endlinks are very low profile and feature stock looking bushings rather than spherical so I am interested in getting them before my next alignment, but I am not sure if they are short enough?


which hotchkis end links are you referring to? a quick google search for me yielded adjustable ones.


as an aside, i finally received my whiteline KLC180-215's and they worked out great. while i was waiting for them, i also picked up a set of aftermarket [BMW] E36 M3 end links, which are roughly 3/4" shorter than the stock end links; length-wise they kind of end up between the stock links and the whitelines. i didn't install them yet, but they would likely be short enough and at $45/pair they were about 30% of the cost of the whiteline units. food for thought.

Mike_ZN6 07-07-2020 03:53 PM

Quote:

Originally Posted by pslater (Post 3347232)
which hotchkis end links are you referring to? a quick google search for me yielded adjustable ones.

I was referring to the adjustable ones. I guess my question was actually can the Hotchkis end links be adjusted short enough for a very low car with KW coils? I swear I read somewhere on this forum that somebody had to cut theirs because they were too long even in the shortest position.

NoHaveMSG 07-07-2020 05:08 PM

Quote:

Originally Posted by Mike_ZN6 (Post 3347272)
I was referring to the adjustable ones. I guess my question was actually can the Hotchkis end links be adjusted short enough for a very low car with KW coils? I swear I read somewhere on this forum that somebody had to cut theirs because they were too long even in the shortest position.

Call them and ask how long they are and what the adjustment range is. Then compare them to the whiteline parts the rest of us are using. Whiteline lists the lengths and adjustment ranges of theirs on their website.

Mike_ZN6 07-07-2020 06:01 PM

Quote:

Originally Posted by NoHaveMSG (Post 3347290)
Call them and ask how long they are and what the adjustment range is. Then compare them to the whiteline parts the rest of us are using. Whiteline lists the lengths and adjustment ranges of theirs on their website.


I actually emailed them about it a few weeks ago and they never got back to me. I guess I will need to give them a call.

pslater 07-07-2020 11:51 PM

Quote:

Originally Posted by Mike_ZN6 (Post 3347308)
I actually emailed them about it a few weeks ago and they never got back to me. I guess I will need to give them a call.

well, you may might want to hold off on that. ;)

i took a few minutes to google this, and someone was kind enough to leave an amazon review with some details on the length:

"These certainly are made well and easy to install and adjust, but they are barely shorter than the OEM endlinks at their shortest setting. If you're looking for shorter endlinks to address a lowered FR-S's swaybar clearance issues, I would look elsewhere."

(from: https://www.amazon.ca/Hotchkis-25445...ustomerReviews)

if the RCE SS-1 you're running has got the same body or mounting dimensions as their Tarmac 0 (which i have on my car), then you definitely want to look into the whiteline KLC180-215. i am lowered about 25-30mm from stock height and i have plenty of clearance with the KLC180-215's.

sifl 07-08-2020 11:15 AM

I cut the Hotchis shorter because they were too long on even the shortest position with RCE T2s and T3s.
I have used those that way with the OEM sway bar and a Whiteline sway bar.
Once cut down, they were fine.
The Whiteline endlinks were too thick for me and would contact the inner fender, because of all the camber.


Sent from my SM-G973U using Tapatalk

J95 12-27-2023 08:56 PM

Guys I'm really lost with this topic, I've read literally everything: some say you need shorter links, others say longer, others say that up to 40mm drop you can use oem ones

Please someone who is 100% sure, which length of end links I need for my setup: KW v3, oem sway bar, ~1.3"/33mm drop?

Ruben_86_ 01-05-2024 04:01 AM

Quote:

Originally Posted by J95 (Post 3599198)
Guys I'm really lost with this topic, I've read literally everything: some say you need shorter links, others say longer, others say that up to 40mm drop you can use oem ones

Please someone who is 100% sure, which length of end links I need for my setup: KW v3, oem sway bar, ~1.3"/33mm drop?

You do not need to change them with kW v3 / cs

NoHaveMSG 01-13-2024 05:08 PM

Quote:

Originally Posted by Ruben_86_ (Post 3599538)
You do not need to change them with kW v3 / cs

I had to change them with T2's which are V3 based :iono:

Ruben_86_ 01-14-2024 08:38 AM

Quote:

Originally Posted by NoHaveMSG (Post 3599994)
I had to change them with T2's which are V3 based :iono:

I know some people with V3 without those problems.

NoHaveMSG 01-15-2024 03:11 PM

Quote:

Originally Posted by Ruben_86_ (Post 3600041)
I know some people with V3 without those problems.

I guess we need to take different sway bars into account. I have the Perrin adjustable on the softest mounting point. Moving the mounting point may have also caused an issue.

Tokay444 01-15-2024 05:02 PM

I needed SPL short endlinks with Tarmac 2s and TRD bar. Links JUST kiss the back of the strut at full lock.

Ruben_86_ 01-15-2024 07:10 PM

Quote:

Originally Posted by NoHaveMSG (Post 3600097)
I guess we need to take different sway bars into account. I have the Perrin adjustable on the softest mounting point. Moving the mounting point may have also caused an issue.

Sure, we're talking about OEM bars

dreamwonder 01-16-2024 09:25 AM

I used a endlink made for Kia (215mm ish). Length and shaft thickness clears shock body (kw 1 way), control arm and all chassis common contact spots...up to about -4.2 camber before endlink cap starts making contact with wall. (max on crash bolt and top hat) on trd 21mm and perrin 22mm (forgot position used).

Racecomp Engineering 01-16-2024 10:34 AM

Definitely recommend adjustable endlinks with adjustable swaybars or if you're corner balancing the car.

- Andrew

KiK 01-16-2024 03:33 PM

Quote:

Originally Posted by Racecomp Engineering (Post 3600156)
Definitely recommend adjustable endlinks with adjustable swaybars or if you're corner balancing the car.

- Andrew

Could you elaborate please?
As you may remember from the other thread, I will be running corner balanced V3s with a 20mm drop on stock sway bar and end links.

Is that an order for me to spend more money? (I don't take those lightly [have already ordered the 60-170 at your indirect direction :D])

RedReplicant 01-16-2024 03:40 PM

Quote:

Originally Posted by KiK (Post 3600175)
Could you elaborate please?
As you may remember from the other thread, I will be running corner balanced V3s with a 20mm drop on stock sway bar and end links.

Is that an order for me to spend more money? (I don't take those lightly [have already ordered the 60-170 at your indirect direction :D])

When you're corner balancing it is somewhat unlikely that your corners will be the same weight side to side, so the shock bodies (and therefore sway bar mount tabs) will sit at different distances relative to the sway bar pickup points. You need to corner balance with the bars disconnected, connect one corner at the proper length to prevent contact / binding, and then adjust the other so it slips into the sway bar with zero force.

Make sure you also index your end link rod ends / ball joints so that they don't bind.

It seems like it is extremely easy to get into end link issues with these cars in a way that causes binding or contact, a lot of manufs on both sides (coilovers and endlinks) seem to get it wrong. Length is important too. I've seen contact in the following ways, I'm sure there are more:
1. Sway bar to LCA
2. Endlink to chassis behind coilover
3. Endlink to bottom of strut when turning the steering wheel

This can cause weird stuff like power steering cut out, sudden understeer under certain situations, broken endlinks, etc.

Racecomp Engineering 01-16-2024 04:26 PM

Quote:

Originally Posted by KiK (Post 3600175)
Could you elaborate please?
As you may remember from the other thread, I will be running corner balanced V3s with a 20mm drop on stock sway bar and end links.

Is that an order for me to spend more money? (I don't take those lightly [have already ordered the 60-170 at your indirect direction :D])

You will most likely be fine with the stock swaybar, endlinks, and 20mm drop.

With adjustable swaybars which have different mounting holes, it helps to have adjustable endlinks to make sure you don't have rubbing issues.

And to do a perfect corner balance, you need adjustable swaybars to make sure there's no preload on the swaybar.

- Andrew

J95 01-23-2024 08:33 AM

Quote:

Originally Posted by KiK (Post 3600175)
Could you elaborate please?
As you may remember from the other thread, I will be running corner balanced V3s with a 20mm drop on stock sway bar and end links.

Is that an order for me to spend more money? (I don't take those lightly [have already ordered the 60-170 at your indirect direction :D])

We will run the same setup, even same springs as I also ordered 60-170 for the rear. Will be curious to find if you finally needed the adjustable end links :D

KiK 01-23-2024 09:35 PM

Quote:

Originally Posted by J95 (Post 3600526)
We will run the same setup, even same springs as I also ordered 60-170 for the rear. Will be curious to find if you finally needed the adjustable end links :D


No, I'm curious to find if *YOU* need the adjustable end links :laughabove:

J95 01-24-2024 05:07 PM

Quote:

Originally Posted by KiK (Post 3600555)
No, I'm curious to find if *YOU* need the adjustable end links :laughabove:

haha I have to wait 1 month or so to install it

but FYI some guys from Germany told me that it should work with OEM links with a drop of up to ~40mm. More than that you would need longer links in the front, not shorter


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