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Official 5th Generation Suspension Thread


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With the Whiteline 3-way adjustable, the kartboys are 1-too long and you have to rotate the spring perch. With Bilsteins, the rear needs to be slightly raised so the end link bolt does not interfere with the perch. 2- on the stiff setting, the angle is not the best. Since there is no rotation on the top of the end link that secures to the RSB, the bolt puts a compressive pressure on the upper poly bushing. This year the poly bushing failed. For an single or double adjustment bar, the angle is fine.

 

So an endlink with adjustability to align the angle is adventagous.

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  • 2 weeks later...

I have bilstein with rce black combo....

 

I've noticed that the wheel gap (top of tire to fender) in the front is more than back.

 

Back struts were left as is from RCE....did not alter height...didn't know how lol

 

About 1 finger's worth...i know...very scientific.

 

Car looks level though...

 

Anyone experience this?

Or should I take it all apart and reassemble.

 

 

Sent from my Nexus 5 using Tapatalk

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Fortune 500's ordered, sway bar, shifter bushing w/ washer have already been delivered, and waiting on downpipe to ship. Then I just need to get back to the states and have a day in the garage. Edited by BlueLGT408
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I have bilstein with rce black combo....

 

I've noticed that the wheel gap (top of tire to fender) in the front is more than back.

 

Back struts were left as is from RCE....did not alter height...didn't know how lol

 

About 1 finger's worth...i know...very scientific.

 

Car looks level though...

 

Anyone experience this?

Or should I take it all apart and reassemble.

 

 

Sent from my Nexus 5 using Tapatalk

 

The rear is adjustable in 5mm increments.

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I've noticed that the wheel gap (top of tire to fender) in the front is more than back.
That's how most cars are - the front wheel well is more open (larger gap) than the rear. Some lowering springs drop the front further than the rear to achieve the uniform look (and if you look at the side of the cars with such kits, you can see they are now leaning forward and the sideskirt is not straight)

 

The RCEs are supposed to give the same drop front and rear, so the delta between the front and rear is preserved.

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How much shock compression travel should we have on these cars when sitting at static ride height? I have acquired some AST 4100's (Mann engineering type-25's, thanks to Gteaser for the heads up) that have 5K springs on the fronts. I have measured the distance from the bump stop to the top of the shock body (surface that it will make contact with) and it measures 4.5" with the shock fully extended. My current Tanabe coilovers compress 2.5" with 6k springs on the fronts. I am working on the assumption that a 5k spring will be compressed 20% further than a 6k spring (6k is 20% stiffer than 5k). That will make the front compress 3" with the new AST shocks and their 5k springs. Is 1.5" of remaining compression travel (not including bump stop travel) enough? Or should I stick with 6k springs which will add about .5" of compression travel back? Edited by feesh
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How much shock compression travel should we have on these cars when sitting at static ride height? I have acquired some AST 4100's (Mann engineering type-25's) that have 5K springs on the fronts. I have measured the distance from the bump stop to the top of the shock body (surface that it will make contact with) and it measures 4.5" with the shock fully extended. My current Tanabe coilovers compress 2.5" with 6k springs on the fronts. I am working on the assumption that a 5k spring will be compressed 20% further than a 6k spring (6k is 20% stiffer than 5k). That will make the front compress 3" with the new AST shocks and their 5k springs. Is 1.5" of remaining compression travel (not including bump stop travel) enough? Or should I stick with 6k springs which will add about .5" of compression travel back?

 

you have swifts? how much adjustment do you have left on your perch before you fully crush the helper? pics?

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Hey Gravity. I do not have Swifts on the AST's. They came with CG springs. I haven't adjusted the ride height yet on the AST's but that 4.5" of measured compression travel is with the shaft fully extended so I'd have to fully compress the helper springs when setting the height to maintain that travel.
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You may do away with the helper springs if the main spring has no play when wheel is completely off the ground.

"It's within spec" - SOA :rolleyes:

"Depth is only shallowness viewed from the side." - Fredism

"So, how much did it cost for your car to be undriveable :lol:." - Stephen (very close friend)

"You have done so much it would be stupid to go back." - Sunny of Guru Electronics

 

2018Q50RS | 2015WrxThread | Shrek

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You may do away with the helper springs if the main spring has no play when wheel is completely off the ground.

 

yes, this accomplishes the task of keeping the main seated, but does preload the main some causing a slight change in the actual rate of the spring. This is the reason helpers are used.

 

BUT we aren't talking a competition setup here, so if you go this route, just make sure the perches are at the same height from passenger to driver sides.

 

feesh, this is the exact issue I dealt with when setting up my suspension. The shop was able to get everything set up and proper after about 4 hours. I know that your goal is to have a well handling, supple daily, so I would top that perch out and just call it a day. Those shocks will already provide some drop as they are shorter than the stock setup. getting rid of the helper is your call.

Edited by GravityGear
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You may do away with the helper springs if the main spring has no play when wheel is completely off the ground.

 

I could do that but it won't have any impact on compression travel on my setup as the springs are linear and I'll be maxing out the height. I don't have any issues with the perches rubbing the tires either as you did.

 

yes, this accomplishes the task of keeping the main seated, but does preload the main some causing a slight change in the actual rate of the spring. This is the reason helpers are used.

 

BUT we aren't talking a competition setup here, so if you go this route, just make sure the perches are at the same height from passenger to driver sides.

 

feesh, this is the exact issue I dealt with when setting up my suspension. The shop was able to get everything set up and proper after about 4 hours. I know that your goal is to have a well handling, supple daily, so I would top that perch out and just call it a day. Those shocks will already provide some drop as they are shorter than the stock setup. getting rid of the helper is your call.

 

Yep, I had the same issues with the Tanabe's. Had to fully compress the helpers and had to change from 5k to 6k springs to keep off the bump stops on big bumps. I never measured the available compression travel on them though so that's why I'm asking the question beforehand for the AST's. I won't have that number for the Tanabe's until I remove them. I just have a full droop and a normal ride height measurement from the bottom of the top mount to the top of the spring perch. With 6k springs, it's a 2.5" difference.

 

So, you think the 1.5" of available compression travel before hitting the bump stop is enough or should I order a set of 6k springs to get another .5"? Unfortunately, I can't re-use the one's off the Tanabe's as the diameter is different.

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I have bilstein with rce black combo....

 

I've noticed that the wheel gap (top of tire to fender) in the front is more than back.

 

Back struts were left as is from RCE....did not alter height...didn't know how lol

 

About 1 finger's worth...i know...very scientific.

 

Car looks level though...

 

Anyone experience this?

Or should I take it all apart and reassemble.

 

 

 

 

 

Sent from my Nexus 5 using Tapatalk

 

Need more information:

 

How many hookers are in the trunk.

 

:hide:

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Agreed. I prefer as much travel as I can get.

 

Compression travel is great but dont neglect rebound travel as it plays a huge part in your ride comfort and control. If your suspension cannot track the dips in the road its just as bad as not having the dampening to track the bumps. Keeping the chassis neutral and being able to reset its self will give you that solid feel and comfort.

 

How did you like your 6k springs on you tanabe struts?

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The rear is adjustable in 5mm increments.

 

As far as I know....its on the highest setting..didn't do anything out of the box.

 

Try to mess with it...but couldn't figure adjustment...so just left it as is

 

Sent from my Nexus 5 using Tapatalk

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Fortune 500's w/ swift springs 7k/6k along with a 22mm whiteline RSB

 

Also probably a stupid question and I haven't seen anything, but are there any other supporting mods needed to do coilovers? I don't believe there are just want to be sure i'm doing it right the first time around. Thanks

Edited by BlueLGT408
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has anyone tried out the cusco front strut tower bar for our car?????

i found the part numbers and it seems that the front also matches with the 08 wrx.

check it.

part numbers

http://www.cuscousainc.com/vehicle-results.html?make=182&modelname=666&year=162

 

front

687 540 a

rear

http://www.rallysportdirect.com/Cusco-Rear-Strut-Tower-Bar-Type-OS-Subaru-WRX-STI-2008-2011

quick releases:

http://www.rallysportdirect.com/Cusco-00B-540-C-Strut-Tower-Brace-Type-OS-Quick-Release-Clamps

 

how do these compare with the gt spec ones

only problem is the rear sits so high!!!

rear fitment is already confirmed….

anyone have a front fitment confirmation?

 

 

edit

gt spec part numbers and parts

http://www.gtspec.com/catalog/products-car/subaru/2010-legacy-gt

front

http://www.gtspec.com/product/gtspec-front-strut-brace-subaru-legacy-gt-and-outback-2010

rear

http://www.gtspec.com/product/gtspec-rear-strut-brace-2010-legacy-outback

 

the gt spec front one seems to start higher and have less bend in the bar where the cusco seems to sit more flush and wrap more.

Edited by ncfree
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...for those interested it appears that RS*R produces a coilover that may work for the 5th gen Legacy (the page states BR9, but other than the Outback that platform wasn't available in the States). I came across the info here.

 

http://cdn.shopify.com/s/files/1/0107/5992/products/IMG_4542_1024x1024.JPG?v=1397163049

Edited by Syndicate
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has anyone tried out the cusco front strut tower bar for our car?????

i found the part numbers and it seems that the front also matches with the 08 wrx.

check it.

part numbers

http://www.cuscousainc.com/vehicle-results.html?make=182&modelname=666&year=162

 

front

http://www.rallysportdirect.com/Cusco-692-540-A-Front-Strut-Tower-Bar-Type-OS

rear

http://www.rallysportdirect.com/Cusco-Rear-Strut-Tower-Bar-Type-OS-Subaru-WRX-STI-2008-2011

quick releases:

http://www.rallysportdirect.com/Cusco-00B-540-C-Strut-Tower-Brace-Type-OS-Quick-Release-Clamps

 

how do these compare with the gt spec ones

only problem is the rear sits so high!!!

rear fitment is already confirmed….

anyone have a front fitment confirmation?

 

 

edit

gt spec part numbers and parts

http://www.gtspec.com/catalog/products-car/subaru/2010-legacy-gt

front

http://www.gtspec.com/product/gtspec-front-strut-brace-subaru-legacy-gt-and-outback-2010

rear

http://www.gtspec.com/product/gtspec-rear-strut-brace-2010-legacy-outback

 

the gt spec front one seems to start higher and have less bend in the bar where the cusco seems to sit more flush and wrap more.

Yup, ping nstg8r, he's got the front installed with the quick releases. I think he was going to swap the back one too to match.

 

Both GTSpec and Cusco are very nice products, light and well made.

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