Welcome to the North American Subaru Impreza Owners Club Thursday April 17, 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 04-25-2010, 03:57 AM   #1
littlec
Scooby Newbie
 
Member#: 208934
Join Date: Apr 2009
Location: canada
Vehicle:
09 2.5i

Default 09+ wrx springs on stock 2.5i struts?

good idea? bad idea? Trying to get a stiffer ride on my daily driver. Is it safe for the stock 2.5i struts? As in, will it blow my struts after 10k. In my research I found that the 09+ wrx's spring rate is around 200lb/in... nothing about how much the stock 2.5i struts can handle. Any information would be greatly appreciated... seems to be little information on the 08+'s suspension set up.

Yes, I'm also aware of the RCE/GTWorx setup that is being developed right now, but I can't justify putting in 12-1500$ into a DD that i won't be able to fully take advantage the setup.
* Registered users of the site do not see these ads.

Last edited by littlec; 04-25-2010 at 04:04 AM.
littlec is offline   Reply With Quote
Old 04-25-2010, 09:04 AM   #2
Power6
NASIOC Supporter
 
Member#: 72730
Join Date: Oct 2004
Chapter/Region: NESIC
Location: Wayland, MA
Vehicle:
2001 Lexus ES300,
2005 Outback XT

Default

That is probably a bad idea. You're not really going to improve the ride handling by just swapping the springs.

If you are looking to keep it inexpensive, keep a lookout for 09+ WRX stock struts and springs together, certainly once those Bilsteins are out the market will open up with a bunch of stock stuff. Lots of people swapping to coilovers selling these already. Maybe keep your eyes out for stock WRX sway bars too.

Sure there is lots of bad talk about the stock 09 WRX suspension but its all relative, I am sure it is better than the 2.5i and if the price is right...
Power6 is offline   Reply With Quote
Old 04-25-2010, 09:34 AM   #3
09rexwagon
Scooby Specialist
 
Member#: 216135
Join Date: Jul 2009
Vehicle:
2011 Civic SI
STX #66, 06 S2000 STR 180

Default

The 08 WRX struts/shocks are the same at the 09+ so you can look for those.
09rexwagon is offline   Reply With Quote
Old 04-25-2010, 09:44 AM   #4
littlec
Scooby Newbie
 
Member#: 208934
Join Date: Apr 2009
Location: canada
Vehicle:
09 2.5i

Default

thanks guys, I was thinking of getting some 09+ take offs strut and springs too since their will be more with the bilsteins release. I guess I will pass and wait patiently. sway bars already in the car. that was the first thing I did since the na impreza doesn't have a RSB. odd I know. thanks for the info. if anyone else wants to chime in, feel free.
littlec is offline   Reply With Quote
Old 04-25-2010, 09:47 AM   #5
gsrcrxsi
Scooby Specialist
 
Member#: 236952
Join Date: Jan 2010
Chapter/Region: MAIC
Location: Baltimore
Vehicle:
2010 WRX (SSM)
Stg "2+" 300hp/360trq

Default Re: 09+ wrx springs on stock 2.5i struts?

Quote:
Originally Posted by 09rexwagon
The 08 WRX struts/shocks are the same at the 09+ so you can look for those.
Springs might be the same. But the struts are not. Dimensionally they are the same, but the 09+ has improved performance over the 08s
gsrcrxsi is online now   Reply With Quote
Old 04-25-2010, 10:10 AM   #6
09rexwagon
Scooby Specialist
 
Member#: 216135
Join Date: Jul 2009
Vehicle:
2011 Civic SI
STX #66, 06 S2000 STR 180

Default

Quote:
Originally Posted by gsrcrxsi View Post
Springs might be the same. But the struts are not. Dimensionally they are the same, but the 09+ has improved performance over the 08s
Nope, in fact it is dead opposite, the 09+ springs are quite different springs rates, but the shocks/struts are the same. The only suspension changes from 08->09 was 1mm thicker RSB and stiffer springs. Read the whole bilstein thread. Myles bought 09 struts/shocks and dynoed them relative to the 08 counterparts......identical within the error margins from a damping standpoint.

That's actually why the 09+ is in need of new dampers because they kept the dampers the same but increased spring rates from 08 -> 09 rendering the spring mass damper system very under damped relative to critical damping.
09rexwagon is offline   Reply With Quote
Old 04-25-2010, 10:17 AM   #7
Power6
NASIOC Supporter
 
Member#: 72730
Join Date: Oct 2004
Chapter/Region: NESIC
Location: Wayland, MA
Vehicle:
2001 Lexus ES300,
2005 Outback XT

Default

Quote:
Originally Posted by 09rexwagon View Post
Nope, in fact it is dead opposite, the 09+ springs are quite different springs rates, but the shocks/struts are the same. Read the whole bilstein thread. Myles bought 09 struts/shocks and dynoed them relative to the 08 counterparts......identical within the error margins from a damping standpoint.

That's actually why the 09+ is in need of new dampers because they kept the dampers the same but increased spring rates from 08 -> 09 rendering the spring mass damper system very under damped relative to critical damping.
Myles didn't say they were the same, just that the damping was very similar. Dyno plots weren't posted so not sure how you can say within error margins unless you did see the plots?

I only bring it up because I think the jury is still out on whether throwing 09 springs at a set of 08 struts is a good idea or not. Maybe the small damping changes were for durability rather than anything else.
Power6 is offline   Reply With Quote
Old 04-25-2010, 10:20 AM   #8
09rexwagon
Scooby Specialist
 
Member#: 216135
Join Date: Jul 2009
Vehicle:
2011 Civic SI
STX #66, 06 S2000 STR 180

Default

Quote:
Originally Posted by Power6 View Post
Myles didn't say they were the same, just that the damping was very similar. Dyno plots weren't posted so not sure how you can say within error margins unless you did see the plots?

I only bring it up because I think the jury is still out on whether throwing 09 springs at a set of 08 struts is a good idea or not. Maybe the small damping changes were for durability rather than anything else.
Throwing a set of 09 springs on 09 struts/shocks isn't a good idea, so that other scenario surely would not be .

I haven't read that part of the thread since Nov-ish of 09, but I thought Myles said that for all intents and purposes, the dynos show that 08 == 09 from a damping standpoint. Maybe they improved internals, seals, shim stacks etc for improve durability as you mentioned, but that would be new to me.
09rexwagon is offline   Reply With Quote
Old 04-25-2010, 10:42 AM   #9
csmithwrx'05
Scooby Specialist
 
Member#: 171293
Join Date: Feb 2008
Chapter/Region: South East
Location: Miami, FL
Vehicle:
'05 WRX Hybrid
EJ257 w/Blouch 18G 8cm^2

Default

Swift Sport Springs for the '08 WRX/2.5i would be a great choice IMHO.

http://turninconcepts.com/product_in...roducts_id=631

They will give you a bit higher spring rate, but not so much that it will kill your struts. Perfect for a DDer.
csmithwrx'05 is offline   Reply With Quote
Old 04-25-2010, 03:48 PM   #10
gsrcrxsi
Scooby Specialist
 
Member#: 236952
Join Date: Jan 2010
Chapter/Region: MAIC
Location: Baltimore
Vehicle:
2010 WRX (SSM)
Stg "2+" 300hp/360trq

Default Re: 09+ wrx springs on stock 2.5i struts?

Quote:
Originally Posted by 09rexwagon
Nope, in fact it is dead opposite, the 09+ springs are quite different springs rates, but the shocks/struts are the same. The only suspension changes from 08->09 was 1mm thicker RSB and stiffer springs. Read the whole bilstein thread. Myles bought 09 struts/shocks and dynoed them relative to the 08 counterparts......identical within the error margins from a damping standpoint.

That's actually why the 09+ is in need of new dampers because they kept the dampers the same but increased spring rates from 08 -> 09 rendering the spring mass damper system very under damped relative to critical damping.
Well Epic Engineering designed their new springs specifically for the 09+ dampers stating they have increased performance over the 08s and that's why they don't recommend their springs for 08s
gsrcrxsi is online now   Reply With Quote
Old 04-25-2010, 03:52 PM   #11
09rexwagon
Scooby Specialist
 
Member#: 216135
Join Date: Jul 2009
Vehicle:
2011 Civic SI
STX #66, 06 S2000 STR 180

Default

Quote:
Originally Posted by gsrcrxsi View Post
Well Epic Engineering designed their new springs specifically for the 09+ dampers stating they have increased performance over the 08s and that's why they don't recommend their springs for 08s
I actually saw that, which was interesting. I wonder if they have dyno sheets they'd be willing to share.
09rexwagon is offline   Reply With Quote
Old 04-25-2010, 10:06 PM   #12
Jay89
Scooby Newbie
 
Member#: 205205
Join Date: Mar 2009
Chapter/Region: W. Canada
Location: Alberta
Vehicle:
2007 WRX
Urban Grey

Default

if you are going to do any swapping, i say just swap the whole setup. dont swap single parts. its a waste of money and its not that big of a difference. for springs, get either swift, or sti pinks.
i have coilovers on my car that are for a 08 wrx. tbh, its cheaper than aftermarket strut and spring setups. only downside is that its quite stiff for a dd. it dosnt matter to me, i actually prefer it this way. but if you like a softer ride, then jus stick with what you have right now. add a front and rear tower strut, bigger sway bars, bigger tires, etc. theres lots more you can do without actually changing the springs.
Jay89 is offline   Reply With Quote
Old 04-26-2010, 12:00 AM   #13
tuskenraider
Scooby Specialist
 
Member#: 65699
Join Date: Jul 2004
Chapter/Region: MWSOC
Location: S.S. Chicago
Vehicle:
11 WRX Hatch
Reckless Red

Default

Quote:
Originally Posted by Power6 View Post
Myles didn't say they were the same, just that the damping was very similar. Dyno plots weren't posted so not sure how you can say within error margins unless you did see the plots?

I only bring it up because I think the jury is still out on whether throwing 09 springs at a set of 08 struts is a good idea or not. Maybe the small damping changes were for durability rather than anything else.
I think his post explains it pretty well.......

Quote:
Originally Posted by RaceComp Engineering View Post
The 09 WRX strut dyno plots look SOOO close to the 08's in EVERY frickin way its pitiful. And yes...we made SURE that we got 09 shocks. The part # were confirmed on our actual cars, on line, with you guys, it all adds up now. SOA just increased the spring rates ( STI OEM rates) and gave it TONS of travel( hence the 4X4 look). The rear shocks are underdamped sooo badly you could not increase the rates AT ALL. Well you could but your car would handle like total POO. Thats the reality of this. Does this mean other companies will make springs with advertised rates that are increased?..YES. And thats when you have to ask yourself...." do I want looks, or do I want function..."
If another company wants to refute it, well yes, dyno plots would end the speculation.
tuskenraider is offline   Reply With Quote
Old 04-26-2010, 12:13 AM   #14
MonsterWRX5
Scooby Newbie
 
Member#: 239847
Join Date: Mar 2010
Chapter/Region: Tri-State
Location: PA
Vehicle:
2011 sti sedan
swp

Default

i thought the 09 springs were 30% stiffer then the 08's? if your interested i have a set of stock 09 struts with swift sport springs already on them. they got taken off my car for coilovers. 13,000 miles on the struts and 5000 miles on the springs. They will give your ride a nice drop and a a lot better handling especially on the 2.5i.... pm me if your interested we can work something out i just noticed you were the one that pm'd me

Last edited by MonsterWRX5; 04-26-2010 at 12:18 AM.
MonsterWRX5 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
09 Specific springs on stock struts? kickniteasy Brakes, Steering & Suspension 2 02-04-2010 09:27 PM
AGX struts and STI springs on a 2.5I woods Brakes, Steering & Suspension 19 07-06-2008 05:40 PM
AGX struts and STI springs on a 2.5I woods Brakes, Steering & Suspension 1 07-04-2008 05:17 PM
FS : 06 wrx springs and 06 2.5i struts 06impreza2.5i Tri-State Area Private Classifieds 3 06-28-2008 07:58 PM
2006 wrx springs on 2006 2.5i? Nuke209 Brakes, Steering & Suspension 2 05-20-2008 06:37 PM


All times are GMT -4. The time now is 03:12 PM.


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.