Welcome to the North American Subaru Impreza Owners Club Friday July 25, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Brakes & Suspension Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Brakes, Steering & Suspension

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-17-2012, 02:48 PM   #1
phenryiv1
NASIOC Supporter
 
Member#: 91212
Join Date: Jul 2005
Chapter/Region: MAIC
Location: Martinsburg, WV
Vehicle:
2011 WRX 5DR
Satin White Pearl

Default Using 08 Impreza front struts as Koni Cores on a 2011- Issues?

I ordered Konis (loved them in past applications) for my 2011 WRX. Car is mostly stock, though I will have to see whether my wallet will allow for RCE Yellows or Blacks before I actually do the Koni install.

As 2011 donor struts are hard to come by, I searched and found a fairly local set of donor cores from a 2008 Impreza. Seeing as how every indication has been that any Impreza core is fine (WRX or otherwise), I don't see that being an issue. Also, Konis are the same part number for all 08+ WRX models, so fitting the insert in the housing is not an issue.

My question more pertains to aligning the vehicle after the install. I have a 100-mile daily commute and don't need a pure-performance alignment. I want something that won't chew up tires, so a stock-like alighment is preferred.

I read the following quote from GTWorx back when they did their initial install of the GTWorx Bilsteins in the 2011:

Quote:
Originally Posted by RaceComp Engineering
The holes in the front clevis tabs are spaced 10mm further out than on the GH struts. I did not take additional measurements, but I assume that the front control arms are 10mm wider as well. What this means is that when using 08-10 struts on the 2011, you gain a ton of front negative camber. With the car on the alignment rack, it maxed out at -2.8 with OEM strut top mounts It can also be dialed back as far as -1.2 for a more conservative alignment.

With all of these mods done and the camber dialed in to max negative, the car feels absolutely amazing. [Y]ou might gain a large advantage (in competition)with the additional camber capability.
I found these alignment specs but (honestly) don't know what they mean:

Quote:
Originally Posted by jonklein611 View Post

Camber (Difference between RH and LH 30′ or less):

–050′030′

Caster:

630′

Steering Angle:

Inner wheel: 36.61.5
Outer wheel: 32.21.5

Front Toe-in:

02 mm (00.08 in)

Rear Toe-in:

02 mm (00.08 in)

Thrust angle 020′
Less than 20′ when “L” is 15 mm (0.6 in) or less

Given the camber ranges that were reported above, and assuming that Konis (when properly installed) do not drive any changes in the alignment potential of the vehicle, is it going to be possible for my car to be aligned to non-tire-eating specifications after installation of Konis in 2008 Impreza housings on a 2011 WRX?

Thanks in advance.
* Registered users of the site do not see these ads.
phenryiv1 is offline   Reply With Quote
Old 02-17-2012, 03:36 PM   #2
rexassian
Scooby Specialist
 
Member#: 183717
Join Date: Jul 2008
Chapter/Region: TXIC
Location: ATX
Vehicle:
1999 2.5RS
BRP

Default

-1.2 with zero toe will not present any issues with tire wear. Even -1.5 should still be fine as long as you have zero toe.
rexassian is offline   Reply With Quote
Old 02-18-2012, 08:57 AM   #3
phenryiv1
NASIOC Supporter
 
Member#: 91212
Join Date: Jul 2005
Chapter/Region: MAIC
Location: Martinsburg, WV
Vehicle:
2011 WRX 5DR
Satin White Pearl

Default

Quote:
Originally Posted by rexassian View Post
-1.2 with zero toe will not present any issues with tire wear. Even -1.5 should still be fine as long as you have zero toe.
Thank you. If I am reading the specs correctly in the RCE post that I quoted, those values are within the range that they found for '08-10 struts in an '11, so I should be good.
phenryiv1 is offline   Reply With Quote
Old 02-19-2012, 09:06 AM   #4
jrose29
Scooby Newbie
 
Member#: 279481
Join Date: Apr 2011
Location: Cbus, OH
Vehicle:
2011 WRX
White

Default

I have the 08 wrx strut bodies on my 2011. You will be just fine if you take as much camber out of the front as you can. I was running about 2 to 2.5 up front last year a noticed some inner tire wear but the car drove just fine.

Like said above keep it less the 1.5 in the front and you should be good.
jrose29 is offline   Reply With Quote
Old 02-21-2012, 03:03 PM   #5
phenryiv1
NASIOC Supporter
 
Member#: 91212
Join Date: Jul 2005
Chapter/Region: MAIC
Location: Martinsburg, WV
Vehicle:
2011 WRX 5DR
Satin White Pearl

Default

Quote:
Originally Posted by jrose29 View Post
I have the 08 wrx strut bodies on my 2011. You will be just fine if you take as much camber out of the front as you can. I was running about 2 to 2.5 up front last year a noticed some inner tire wear but the car drove just fine.

Like said above keep it less the 1.5 in the front and you should be good.
Did you run these on stock springs?
phenryiv1 is offline   Reply With Quote
Old 09-12-2013, 11:37 AM   #6
STI-impreza
Scooby Newbie
 
Member#: 45871
Join Date: Oct 2003
Vehicle:
1995 impreza
Red

Default

Did the 08 struts require any kind of modification to bolt up to the wider track of the 2011? I bent the front driver strut on my 2011 and found a local guy that had the entire oem strut/spring/top hat set from his 08. I plan on just swapping the 2 fronts and just swapping my 2011 springs onto them and since I don't have the money right now to change anything else I have to use the oem inserts even though I know they aren't as stiff which I know will effect my ride quality but I'm on a budget and just want to get rid of the bent strut for now. Is this a feasible thing to do?
STI-impreza is offline   Reply With Quote
Old 09-12-2013, 11:56 AM   #7
phenryiv1
NASIOC Supporter
 
Member#: 91212
Join Date: Jul 2005
Chapter/Region: MAIC
Location: Martinsburg, WV
Vehicle:
2011 WRX 5DR
Satin White Pearl

Default

Your natural negative camber will be greater due to the different widths, but they physically bolted up just like the 2011 ones. Just dial out ALL of the negative camber that you can to minimize inner tire wear.

I would NOT run different ones (2008 v. 2011) on different sides, but that does not sound like an issue.

What did you bend on your 2011 strut?
phenryiv1 is offline   Reply With Quote
Old 09-12-2013, 12:41 PM   #8
STI-impreza
Scooby Newbie
 
Member#: 45871
Join Date: Oct 2003
Vehicle:
1995 impreza
Red

Default

I'm a newb so I'm not sure how to dial out negative camber. I bent the strut body between the lower spring perch and the bottom
STI-impreza is offline   Reply With Quote
Old 09-12-2013, 12:53 PM   #9
phenryiv1
NASIOC Supporter
 
Member#: 91212
Join Date: Jul 2005
Chapter/Region: MAIC
Location: Martinsburg, WV
Vehicle:
2011 WRX 5DR
Satin White Pearl

Default

Damn, I was hoping that you had bent the piston. I'd have bought them from you.

There are 2 bolts that attach the strut to the knuckle. One of them is for adjustment of camber- it has an oblong shaft design that moves the bottom of the strut in or out. It will be pretty obvious which way you are moving it. You want to use the setting that is as close to straight up and down as possible.
phenryiv1 is offline   Reply With Quote
Old 09-12-2013, 12:57 PM   #10
STI-impreza
Scooby Newbie
 
Member#: 45871
Join Date: Oct 2003
Vehicle:
1995 impreza
Red

Default

Awesome thanks for the feedback I appreciate it. I'm just hoping swapping my 2011 springs onto them will help stiffen them up a bit since I know the 08s aren't as stiff which kinda sucks because I love the stock ride feel in the 2011
STI-impreza is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
08+ Perrin Front Strut Bar install Fun5iz3 Newbies & FAQs 8 11-05-2011 01:33 PM
WTB : 08+ WRX front struts, Koni yellows, Inserts! slowgrey08 Private 'Wanted' Classifieds 0 07-06-2011 06:05 PM
Whiteline Com C Front Strut Mounts and lower ball Joint a Fittment Issue??? 02wrxin Brakes, Steering & Suspension 2 12-17-2010 05:14 PM
FS: 08+ Cusco Front Strut Bar talsnic VIC Private Classifieds 4 08-17-2009 10:23 PM
08 STI Front Struts, Same as 07? Impreza_AWDriver Impreza Forum 1 01-04-2008 03:21 PM


All times are GMT -4. The time now is 09:06 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.