Notices
ScoobyNet General General Subaru Discussion

How to replace front suspension struts

Thread Tools
 
Search this Thread
 
Old 29 January 2022, 04:27 PM
  #31  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

I wish they had more rear droop.
Attached Thumbnails Click image for larger version

Name:	ME75K1M_o.jpeg
Views:	0
Size:	718.3 KB
ID:	72795  

Last edited by 2pot; 29 January 2022 at 04:35 PM.
Old 29 January 2022, 04:43 PM
  #32  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

ah, great that you are familiar with them! How do they drive? Any indications on longevity?? Damping quality??
Old 30 January 2022, 01:26 PM
  #33  
RichDobie
Scooby Regular
Thread Starter
 
RichDobie's Avatar
 
Join Date: Oct 2021
Location: drybrook
Posts: 56
Received 24 Likes on 10 Posts
Default

Thought I’d include a few photos of the side of the car so you can see what the drop is like.




Old 30 January 2022, 02:37 PM
  #34  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Thanks, that is extremely helpful! Beautiful car by the way!!

I've just ordered some springs from Peter Cambridge (based on the 2004 Prodrive STI springs) with a 30mm drop at the front and 10mm at the rear. I will install them with Feal Fixed Perch Struts. Will post photos when it's done (springs will take 3-4 weeks to arrive).
Old 30 January 2022, 05:22 PM
  #35  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by MadUsa1
Thanks, that is extremely helpful! Beautiful car by the way!!

I've just ordered some springs from Peter Cambridge (based on the 2004 Prodrive STI springs) with a 30mm drop at the front and 10mm at the rear. I will install them with Feal Fixed Perch Struts. Will post photos when it's done (springs will take 3-4 weeks to arrive).
What's your plan for the bump stops?
Old 30 January 2022, 05:58 PM
  #36  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Originally Posted by 2pot
What's your plan for the bump stops?
Good question... The Feal come with 50mm bump stops and they seem very hard. Peter suggested sourcing some KYB bump stops from a WRX and fitting them with some rubber hosing to match the smaller shaft of the Feals (they're only 20mm, I believe the WRX are 22mm).

Do you have some experience with this?
Old 30 January 2022, 05:59 PM
  #37  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Originally Posted by 2pot
I wish they had more rear droop.
What does "droop" mean?
Old 30 January 2022, 06:13 PM
  #38  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

By the way, I just measured my wheel arch gaps:

Front: 370mm
Rear: 355mm

I am on OE KYB dampers and OE springs, 2005 Blobeye STI Widetrack, 110'000 miles.

I have Whiteline Offset Front Top Mounts and ALK fitted. Perhaps this is causing my front to sit ~15mm lower than standard?
Old 30 January 2022, 08:56 PM
  #39  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by MadUsa1
What does "droop" mean?
Look at the struts in post#31

The one with the red spring is an oem rear strut.
The one with the yellow spring is a Feal rear strut.

Both those struts are at their full extension or full droop.
Under the right set of circumstances, the Feal strut will not allow the tyre to reach the road surface.
Whereas the oem strut would still be providing grip/traction/braking.

Last edited by 2pot; 30 January 2022 at 09:31 PM.
Old 30 January 2022, 09:12 PM
  #40  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by MadUsa1
By the way, I just measured my wheel arch gaps:

Front: 370mm
Rear: 355mm

I am on OE KYB dampers and OE springs, 2005 Blobeye STI Widetrack, 110'000 miles.

I have Whiteline Offset Front Top Mounts and ALK fitted. Perhaps this is causing my front to sit ~15mm lower than standard?
Struts that should have been changed at 50k, to maintain optimum performance, 17 year old, sagged, springs and compressed top mounts?

After 30miles Rich's front ride height is 365mm. As the stiction wears off his inverted front struts, I'd expect 355-360mm. Hence the importance of using the correct bump stops.

Often hear people wondering why their new struts, top mounts and lowering springs ride the same as, or higher, than their old set-up.

Last edited by 2pot; 30 January 2022 at 09:24 PM.
Old 30 January 2022, 09:29 PM
  #41  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Originally Posted by 2pot
Look at the struts in post#31

The one with the red spring is an oem rear strut.
The one with the yellow spring is is a Feal rear strut.

Both those struts are at their full extension or full droop.
Under the right set of circumstances, the Feal strut will not allow the tyre to reach the road surface.
Whereas the oem strut would still be providing grip/traction/braking.
OK, I understand what you mean now. Could be a bit tricky under hard driving on bumpy, undulating roads.
Old 30 January 2022, 09:29 PM
  #42  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Originally Posted by 2pot
Struts that should have been changed at 50k, to maintain optimum performance, 17 year old, sagged, springs and compressed top mounts?

After 30miles Rich's front ride height is 365mm. As the stiction wears off his inverted front struts, I'd expect 355-360mm. Hence the importance of using the correct bump stops.

Often hear people wondering why their new struts, top mounts and lowering springs ride the same as, or higher, than their old set-up.
Clear, thanks. Indeed, my dampers are well passed their best at this point.
Old 03 February 2022, 11:08 AM
  #43  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Rich,
Is your disc splitting?
Attached Thumbnails Click image for larger version

Name:	split disc.png
Views:	0
Size:	131.0 KB
ID:	72796  
The following users liked this post:
Old 03 February 2022, 12:58 PM
  #44  
stockcar
Scooby Regular
 
stockcar's Avatar
 
Join Date: Mar 2002
Location: north east
Posts: 6,671
Received 381 Likes on 303 Posts
Default

trick of light in the shadow??
that looks simply like where they have machined the rotor into balance..........
Old 03 February 2022, 01:22 PM
  #45  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by stockcar
trick of light in the shadow??
that looks simply like where they have machined the rotor into balance..........
Hopefully! It just looked like a fissure.

Yes, it does look like the inner edge is lower - as you say, machined away for balancing.

Last edited by 2pot; 03 February 2022 at 01:49 PM.
Old 03 February 2022, 05:54 PM
  #46  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

A few thoughts on the 4 wheel alignment.

The rear struts are not listed as camber adjustable. However, there is play in the rear bolt holes to even out the rear camber. Check with the chosen alignment centre that they are happy to utilise this adjustment, if so, it's a good sign, if not, keep looking.
As a starting point, you can put the rear suspension into full droop, then tighten the rear bolts, this will initially minimise the rear camber - further prying and pushing for adjustment, before final torque.

It is sad how many times I hear the front camber can't be adjusted or equalised - this is usually due to the alignment tech not slacking off the lower front bolt, before trying to rotate the top adjustment camber bolt.

The rear toe adjustment bolts and washers are sometimes rusted solid.
Often worth taking a set with you to avoid wasted time, due to a re-visit:
2 x https://www.importcarparts.co.uk/par...y=&searchPart=

Rich, it's always worth contacting www.asperformance.com (stockcar on here), for parts.

Last edited by 2pot; 03 February 2022 at 08:19 PM.
The following users liked this post:
Old 03 February 2022, 06:32 PM
  #47  
RichDobie
Scooby Regular
Thread Starter
 
RichDobie's Avatar
 
Join Date: Oct 2021
Location: drybrook
Posts: 56
Received 24 Likes on 10 Posts
Default

Originally Posted by 2pot
Rich,
Is your disc splitting?
Well if it is, I haven’t noticed it. You’d have thought I would have, but then again, sometimes you can’t see the wood for the trees! Think I best go and check 👍🏻
Old 03 February 2022, 06:35 PM
  #48  
RichDobie
Scooby Regular
Thread Starter
 
RichDobie's Avatar
 
Join Date: Oct 2021
Location: drybrook
Posts: 56
Received 24 Likes on 10 Posts
Default

Originally Posted by 2pot

Rich, it's always worth contacting asperformance.com (stockcar on here), for parts.
Thanks 2pot - will check them out👌
Old 05 February 2022, 09:37 AM
  #49  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Originally Posted by 2pot
A few thoughts on the 4 wheel alignment.

The rear struts are not listed as camber adjustable. However, there is play in the rear bolt holes to even out the rear camber. Check with the chosen alignment centre that they are happy to utilise this adjustment, if so, it's a good sign, if not, keep looking.
As a starting point, you can put the rear suspension into full droop, then tighten the rear bolts, this will initially minimise the rear camber - further prying and pushing for adjustment, before final torque.

It is sad how many times I hear the front camber can't be adjusted or equalised - this is usually due to the alignment tech not slacking off the lower front bolt, before trying to rotate the top adjustment camber bolt.

The rear toe adjustment bolts and washers are sometimes rusted solid.
Often worth taking a set with you to avoid wasted time, due to a re-visit:
2 x https://www.importcarparts.co.uk/par...y=&searchPart=

Rich, it's always worth contacting www.asperformance.com (stockcar on here), for parts.
useful info!

when I fit the Feal struts, I will have adjustable rear camber as the upper hole is slotted.

I also have whiteline castor top mounts and ALK as I mentioned.

what geo settings do you recommend for (very) fast road and occasional track use?)
Old 05 February 2022, 05:29 PM
  #50  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by MadUsa1
useful info!

when I fit the Feal struts, I will have adjustable rear camber as the upper hole is slotted.

I also have whiteline castor top mounts and ALK as I mentioned.

what geo settings do you recommend for (very) fast road and occasional track use?)
Peter provides that info for you, with his springs.
Old 03 March 2022, 11:38 AM
  #51  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

KYB after-market front struts for 114.3mm pcd Impreza hawkeye STI (Some late model blobeye STI were also 114.3mm pcd).
Contact:
https://www.spring-loaded.co.uk/
Old 13 April 2022, 10:41 PM
  #52  
RichDobie
Scooby Regular
Thread Starter
 
RichDobie's Avatar
 
Join Date: Oct 2021
Location: drybrook
Posts: 56
Received 24 Likes on 10 Posts
Default

Thought I’d just report back around 2-3 months after replacing my front struts/springs. Ive now covered around 400 miles on them and they seem to have dropped further and look to be around 359mm from the top of the front arch to the centre of the wheel/hub.

I'm assuming that I should now be thinking about putting it in for a four wheel alignment. The odd thing is that the car is running arrow straight and the turn in is sharp, direct and just the way I like it. Do ppl still think I need to get the 4 wheel alignment done regardless of this? Thoughts appreciated? 2pot any thoughts?


Old 14 April 2022, 10:27 AM
  #53  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

If you don't mind, potentially, two trips for alignment? You could ask them for a print out of what you have now and post it here.
I'd be amazed if you have equal camber and toe settings though - after a front suspension change.
The following users liked this post:
Old 14 April 2022, 10:43 AM
  #54  
MadUsa1
Scooby Regular
 
MadUsa1's Avatar
 
Join Date: Sep 2009
Posts: 571
Likes: 0
Received 8 Likes on 3 Posts
Default

Originally Posted by RichDobie
Thought I’d just report back around 2-3 months after replacing my front struts/springs. Ive now covered around 400 miles on them and they seem to have dropped further and look to be around 359mm from the top of the front arch to the centre of the wheel/hub.

I'm assuming that I should now be thinking about putting it in for a four wheel alignment. The odd thing is that the car is running arrow straight and the turn in is sharp, direct and just the way I like it. Do ppl still think I need to get the 4 wheel alignment done regardless of this? Thoughts appreciated? 2pot any thoughts?


Thanks for the update, more photos of how the car looks please!!
Old 16 April 2022, 01:59 PM
  #55  
RichDobie
Scooby Regular
Thread Starter
 
RichDobie's Avatar
 
Join Date: Oct 2021
Location: drybrook
Posts: 56
Received 24 Likes on 10 Posts
Default

Here are a couple of photos of the stance/height following the replacement




Old 19 April 2022, 05:44 PM
  #56  
paulmon
Scooby Regular
 
paulmon's Avatar
 
Join Date: May 2000
Posts: 384
Received 2 Likes on 2 Posts
Default

Originally Posted by 2pot
If you don't mind, potentially, two trips for alignment? You could ask them for a print out of what you have now and post it here.
I'd be amazed if you have equal camber and toe settings though - after a front suspension change.
Mine was miles out after replacing front and rear struts. Took it for an alignment, but they could only adjust the fronts as the rear camber bolt was seized, so I'm going to replace the rear lateral arms and get it redone. Prior to getting the front done they were both around +1.2. The best they could get was -0.2. This is on OEM widetrack STi struts and topmounts.
Old 19 April 2022, 06:17 PM
  #57  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by paulmon
Mine was miles out after replacing front and rear struts. Took it for an alignment, but they could only adjust the fronts as the rear camber bolt was seized, so I'm going to replace the rear lateral arms and get it redone. Prior to getting the front done they were both around +1.2. The best they could get was -0.2. This is on OEM widetrack STi struts and topmounts.
And these are stock struts and top mounts?

There isn't an oem rear camber bolt - unless it's aftermarket?
Did you mean the rear toe adjuster? That could have seized:
https://www.importcarparts.co.uk/par...y=&searchPart=

There is something horribly amiss with your front camber. Did they slack the lower bolt, before rotating the top camber bolt? Is negative 0.2 in degrees? As opposed to degrees and minutes? Got the print out?
Old 19 April 2022, 07:58 PM
  #58  
paulmon
Scooby Regular
 
paulmon's Avatar
 
Join Date: May 2000
Posts: 384
Received 2 Likes on 2 Posts
Default

Originally Posted by 2pot
And these are stock struts and top mounts?

There isn't an oem rear camber bolt - unless it's aftermarket?
Did you mean the rear toe adjuster? That could have seized:
https://www.importcarparts.co.uk/par...y=&searchPart=

There is something horribly amiss with your front camber. Did they slack the lower bolt, before rotating the top camber bolt? Is negative 0.2 in degrees? As opposed to degrees and minutes? Got the print out?
yep stock struts and group n top mounts.
Cant comment on the lower bolt but they used this to measure
Amazon Amazon
The measurement I mentioned is when the wheels were back on.

Yep. Meant toe adjuster. Thanks!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Ash Webster
ScoobyNet General
4
10 August 2016 11:06 PM
bugblue1
ScoobyNet General
1
01 April 2012 02:47 PM



Quick Reply: How to replace front suspension struts



All times are GMT +1. The time now is 12:54 AM.