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Old 21 May 2021, 10:31 PM
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jaygsi
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Default 4 wheel alignment

So I posted a thread while back, about steering feeling light, and generally not feeling right. And ideas on improving it.

Most people advised camber adjustment. Anyway noticed I was getting uneven wear on one front tire. So took it in for 4 wheel alignment and 4 new tyres.

Here are results, tracking was out. Now even though it handles better, still don't think I'd anywhere near as good as it should be. Still feels abit light at the front. Only handling mods are alloy wishbones and ICP front drop links.


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Old 21 May 2021, 11:00 PM
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plenty
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More camber and caster will help with steering feel.
Old 22 May 2021, 09:16 AM
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lockheed
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Have you got rear adjustable camber bolts in the rear? Because the camber on the left is more than the right.
Old 22 May 2021, 11:22 AM
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Not that I know of. I've never removed rear struts. I don't think you can fit the camber bolts into the rear struts.


Originally Posted by lockheed
Have you got rear adjustable camber bolts in the rear? Because the camber on the left is more than the right.
Old 22 May 2021, 11:33 AM
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lockheed
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You can, I've got wl 14mm adjustables they go in the top bolt hole from memory.
Old 22 May 2021, 12:42 PM
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They appear to have been fixated on turning everything green.

Get them to maximise/equalise the front negative camber - even if it goes red.
Increase the rear toe-in to positive 15minutes per side - this will also go red.
There's only 26minutes difference in the rear camber. This can be made more equal as there is play in the strut mounting holes.

To increase the front caster you'll need to flip the pins, use 3mm spacers and/or off-set front top mounts

Last edited by 2pot; 22 May 2021 at 06:12 PM.
Old 25 May 2021, 09:43 PM
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So will that mean the wheels will face inwards from the top of the wheel, outwards?

Just don't understand why it's like this, all my other Impreza's have never been like this. Even my non turbo has better steering feel, and I've just replaced all the struts and had that tracked.
Old 25 May 2021, 09:49 PM
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lockheed
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What are the new settings?
Old 26 May 2021, 12:05 AM
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jaygsi
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Of the non turbo? No idea, just took it to a local guy, as wanted to check i hadn't messed up camber as changed all the struts and of course had to remove camber bolts. He said it wasn't far out from what it should be.

Turbo went in for 5 wheel, Laser wheel alignment.
Old 26 May 2021, 12:12 AM
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You need to find some decent alignments settings, not what is stock,
what are your current tyre pressures and what tyres?
Old 26 May 2021, 08:04 AM
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The garage either don't know what they are doing or don't care. They have simply uploaded stock setting range and adjusted until all green and "in spec". You'll need to tell them exactly what you want or better still, take it to someone who knows what they are doing (and cares).

Where in the country are you?
Old 28 May 2021, 06:01 PM
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DDS789
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They have most likely set the car up to standard subaru specs, most bigger alignment type companies wont do anything else and also wont touch aftermarket suspension, its not a lack of care and attention at all, just they aren't going to risk setting a car up to fast road specs etc

OP when you say "light at the front"

​​​​​​is the car under steering or does the steering feel loose

uneven wear on a tyre suggests worn bushing etc



​​​​​
Old 28 May 2021, 10:12 PM
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Rom4
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I read a few forum topics and quite a few people talk about steering bushes being replaced if the car is getting on a bit. Don't take my word for it though, have a little dig around the internet looking for info and make your own mind up.
Old 30 May 2021, 05:34 PM
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Gone from Nankang 205/40/17 to Toyo proxes 215/40/17 i think around 30 Psi all around, not sure if I've checked since garage did them.

Originally Posted by JDM_Stig
You need to find some decent alignments settings, not what is stock,
what are your current tyre pressures and what tyres?
Old 30 May 2021, 06:12 PM
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jaygsi
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Its got standard suspension, only upgraded wishbones to alloy STI ones, but steering was still light before that.

When i say light steering, i mean its very easy to move steering wheel, and doea seem much resistance.

Originally Posted by DDS789
They have most likely set the car up to standard subaru specs, most bigger alignment type companies wont do anything else and also wont touch aftermarket suspension, its not a lack of care and attention at all, just they aren't going to risk setting a car up to fast road specs etc

OP when you say "light at the front"

​​​​​​is the car under steering or does the steering feel loose

uneven wear on a tyre suggests worn bushing etc



​​​​​
Old 30 May 2021, 10:50 PM
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DDS789
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Originally Posted by jaygsi
Its got standard suspension, only upgraded wishbones to alloy STI ones, but steering was still light before that.

When i say light steering, i mean its very easy to move steering wheel, and doea seem much resistance.

if theres nothing a miss bush wise id say caster mods needed as mentioned above
Old 03 June 2021, 12:57 AM
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Who said castor. What kind of castor mods?
Old 01 July 2021, 10:44 AM
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West midlands, as said car has been like this for sometime. Doesn't feel to bad at slow speeds. But when speed is increased to 70mph steering starts feeling lighter. Anyone fairly local i could go too? Or any idea's of what it might be?


Originally Posted by TECHNOPUG
The garage either don't know what they are doing or don't care. They have simply uploaded stock setting range and adjusted until all green and "in spec". You'll need to tell them exactly what you want or better still, take it to someone who knows what they are doing (and cares).

Where in the country are you?
Old 01 July 2021, 11:32 AM
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Peter Cambridge is in Warwick.

https://www.pcadynamics.com/4-wheel-alignment/
Old 02 July 2021, 08:55 PM
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I should add that Peter used to work with Prodrive when they were building all the Subaru rally cars and road specials. He helped design the suspension set ups on those cars. He'd be my first point of call if I was in your position.
Old 03 July 2021, 03:41 PM
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jaygsi
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Lol that tiny bit of info changes everything


Originally Posted by TECHNOPUG
I should add that Peter used to work with Prodrive when they were building all the Subaru rally cars and road specials. He helped design the suspension set ups on those cars. He'd be my first point of call if I was in your position.
Old 25 July 2021, 11:36 AM
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Just a thought, would the STI spoiler be causing this issue? As it seems fine till after 50mph.
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