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My05 Sti Suspension Mods


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Posted

Had a nosey around and can't find the info I'm seeking, want to get my suspension in order and don't know what route to go down.

I can remember reading about the rear shock problem with these and in fact shocks were replaced under warranty about 10k ago. They've started to make the occasional bump again and I feel the suspension isn't really a strong point of my Scoob.

I realise this will be a preference thing, money limited etc., but who's done what to their car and to what degree of success? Is there a no brainer route or is it each to their own? I also can remember reading of either anti dive or anti lift kit. What the hell are they, is someone giving another suspension component an odd name? Please correct me and/or explain please.

Things to consider, don't want the car scraping along the deck, roads out here in places are woeful! Money is not the decider, quality, guarantee, adjustment etc. Slight possibility that I'm gonna start to head down the route of serious mods to the chassis and power in time to make an effective road and track car. Don't want to go mental but I'm keeping my options open!

Figure since car now at 340bhp, time to sort the chassis before venturing back under the bonnet.

Posted

Well there is plenty threads on just this subject mate, but really it depends on what kind of level of drive-ability your after, and what you want the car for, ie: is it a daily runner...

Think the best place to start would probably be, upgrade the Rear Anti Roll Bar to a 22mm, and Drop Links all round, that's just for starters, not too expensive, but real good mods to improve the handling.

Then from there, you can be fitting the H-Brace, the Anti Lift Kit, replace the rubber bushes with Poly bushes and Strut Braces, although, some say that the impreza doesn't need strut braces, as the chassis is pretty solid anyways...

Of course, you also want to think about your suspension too, if the rears are knocking again, then it might not hurt to get them replaced now, then take them off and save them for a rainy day. The fit Coilovers... but again depends on how harsh you want the ride to be... Some people dont mind the ride on some Coilovers, but again, is it a daily driver...? how much could you live with? Also, some Coilovers are better than others, just a case of seeing what the guys will recomend... theres a few popular sets out there...

And finally, once you get that sorted, remember and get your Geometry done...

Posted
Well there is plenty threads on just this subject mate, but really it depends on what kind of level of drive-ability your after, and what you want the car for, ie: is it a daily runner...

I can't be very good at using the search facility on here! It's not a daily driver, it's a toy. It's a pretty standard toy at the moment, engine and exhaust aside. The way I'm looking at it is the car probabaly won't sell for good money anymore. It's a good, straight base to start with so why not modify and make it a very serious toy? I'd like to keep it road legal but aim it at track days too. So maybe ultimately extreme road and mild for the track. I'm thinking roll cage, stripped out, etc. etc.

Think the best place to start would probably be, upgrade the Rear Anti Roll Bar to a 22mm, and Drop Links all round, that's just for starters, not too expensive, but real good mods to improve the handling.

Fair comment, I'm a mechanic to trade but have hardly spent a minute under my Impreza. Why the drop links?

Then from there, you can be fitting the H-Brace, the Anti Lift Kit, replace the rubber bushes with Poly bushes and Strut Braces, although, some say that the impreza doesn't need strut braces, as the chassis is pretty solid anyways...

What's an H-Brace? Clearly something to make what rigid exactly? Can't begin to fathom what an Anti Lift Kit is or is for? Except reduce lift obviously!! Of what? Bushes, yes probably. If going for a welded cage will this not make the chassis mega stiff negateing the need for strut braces?

Of course, you also want to think about your suspension too, if the rears are knocking again, then it might not hurt to get them replaced now, then take them off and save them for a rainy day. The fit Coilovers... but again depends on how harsh you want the ride to be... Some people dont mind the ride on some Coilovers, but again, is it a daily driver...? how much could you live with? Also, some Coilovers are better than others, just a case of seeing what the guys will recomend... theres a few popular sets out there...

Out of warranty so any money will be going on replacement suspension. The car won't be going back to standard ever. So we wait for the recommendations, would have to be able to live with the craters on some of the roads out here, wouldn't want to need to swerve to miss a red chip lying in the road from someones driveway. But would be looking for something serious for the track days. Compromise required here.

And finally, once you get that sorted, remember and get your Geometry done...

I've considered equipment for doing geometry before, this might be just the time to have a new business acquisition!

Thanks for the advice

Posted (edited)
I can't be very good at using the search facility on here! It's not a daily driver, it's a toy. It's a pretty standard toy at the moment, engine and exhaust aside. The way I'm looking at it is the car probabaly won't sell for good money anymore. It's a good, straight base to start with so why not modify and make it a very serious toy? I'd like to keep it road legal but aim it at track days too. So maybe ultimately extreme road and mild for the track. I'm thinking roll cage, stripped out, etc. etc.

Ok, well certainly you should have no problems with going with the Coilovers then! :hello:

Fair comment, I'm a mechanic to trade but have hardly spent a minute under my Impreza. Why the drop links?

Drop Links, are the link between the chassis, and your anti roll bars, they are plastic as standard... so they are just taking a bit more flex out of the roll... and along with the Roll bar, makes a huge differnce, and they are really easy to fit yourself, in no time at all...

Oh, and theres 2 trains of thought on the ANti roll bar thing... One Camp say, 22mm Front, 24mm rear, but then some say thats just too harsh for road use... then theres 22mm rear only, thats what I have and thats just great, not harsh, but very big improvement.

What's an H-Brace? Clearly something to make what rigid exactly? Can't begin to fathom what an Anti Lift Kit is or is for? Except reduce lift obviously!! Of what? Bushes, yes probably. If going for a welded cage will this not make the chassis mega stiff negateing the need for strut braces?

The H Brace, I could probably give you a better answer if I weren't so tired... but its for stiffening your chassis more... but as for what difference exactly it makes, I'll leave that answer to someone who could explain it better than I can...

Anti Lift Kit, I can explain better though, basicly, all its doing, is when you are putting the power down, it stops the car physically lifting up (you know how it goes, back end drops, front lifts) which in turn gives you more grip when your putting the power down... and keeps more traction on your steering wheels...

The roll cage question, I cant really answer that definitively, but I think that it depends on the Cage, some are stronger than others, eg a welded in cage is stronger than a bolt in number, although I could be talking out the hole on that one... Sure someone can correct me there...

Out of warranty so any money will be going on replacement suspension. The car won't be going back to standard ever. So we wait for the recommendations, would have to be able to live with the craters on some of the roads out here, wouldn't want to need to swerve to miss a red chip lying in the road from someones driveway. But would be looking for something serious for the track days. Compromise required here.

Dont think that its that big a compromise really, if your not using it as a daily runner, then you;ll probably forgive it...

I've considered equipment for doing geometry before, this might be just the time to have a new business acquisition!

REALLY Big money for that kind of gear Ive heard... :)

Thanks for the advice

Nae bothers... Hope I've not been feeding you a pack of lies... :D

:P

Edited by thefastone
Posted

hi mate,Dales not far wrong- ive an 05 sti that ive had since new and have only just got happy with the handling

mine has

h brace-connects the bottom of the struts to chasis

top strut brace front

anti lift kit- increases castor to keep more of the tyre on the ground more of the time

bc sports coilover suspension adjustable ride height and damping

for me the coilovers and proper setup were the best improvement ive made to the car and i love them,closely followed by the h brace,aurprised by the difference for a cheap 20 minute fit part!

if you want a run sometime to see the effect give us a shout

cheers Dave

Posted

When you decide to go for coilovers mate please for the love of god dont get Tein as i have them on my Scoob and the car has never felt 100% since fitted i also had a strut burst after just 15000 miles and it took Tein nearly 8 weeks to repair under warrenty since then my bro has had a stutt burst with only 18000 miles covered and they wont even consider helping him they told him it would be a special order from japan for one strut and they wanted £150 just for the postage then £300 just for the strutt IMO go for BC thats the road im going for in the very near future

Posted
hi mate,Dales not far wrong- ive an 05 sti that ive had since new and have only just got happy with the handling

mine has

h brace-connects the bottom of the struts to chasis

top strut brace front

anti lift kit- increases castor to keep more of the tyre on the ground more of the time

bc sports coilover suspension adjustable ride height and damping

for me the coilovers and proper setup were the best improvement ive made to the car and i love them,closely followed by the h brace,aurprised by the difference for a cheap 20 minute fit part!

if you want a run sometime to see the effect give us a shout

cheers Dave

Can you explain H Brace better, are you meaning bottom arms?

The anti-lift kit has been given a couple of different descriptions now. What is the real purpose and can someone explain it's position on the car, connections etc.?

BC coilovers mentioned, Whiteline parts, what's differences, price, quality, just personal choice?

Posted
When you decide to go for coilovers mate please for the love of god dont get Tein as i have them on my Scoob and the car has never felt 100% since fitted i also had a strut burst after just 15000 miles and it took Tein nearly 8 weeks to repair under warrenty since then my bro has had a stutt burst with only 18000 miles covered and they wont even consider helping him they told him it would be a special order from japan for one strut and they wanted £150 just for the postage then £300 just for the strutt IMO go for BC thats the road im going for in the very near future

Got tein super Streets on a 05 Jdm Sti been on for a year touch wood no problems .I have them about as stiff as the sti shocks 10 clicks out from hard .Not the best for country roads the sti shocks were the same got the white line spherical bearing drop links aswell and its a bit lower than normal can't go any lower because of the ings front bumper that was on the car when i bought it

Posted (edited)

Baz, Just had a look on Whiteline's website, and sure enough, they have a very detailed article on teh Anti Lift Kit...

http://www.whiteline.com.au/articles/Effec...0WL%20ALK_b.pdf

Check out the Whitline website, plenty of good info on there, and they generally are not wrong...

http://www.whiteline.com.au/index.php

EDIT: also to add, Geo (Cusco Kid did some very nice threads about just such a subject, you should check them out... he REALLY knows what he's talking about...)

Edited by thefastone
Posted
Baz, Just had a look on Whiteline's website, and sure enough, they have a very detailed article on teh Anti Lift Kit...

http://www.whiteline.com.au/articles/Effec...0WL%20ALK_b.pdf

Check out the Whitline website, plenty of good info on there, and they generally are not wrong...

http://www.whiteline.com.au/index.php

EDIT: also to add, Geo (Cusco Kid did some very nice threads about just such a subject, you should check them out... he REALLY knows what he's talking about...)

Tried their site yesterday and couldn't get on. I'll try again later.

I'll have a look for Cusco Kid's threads thanks :brickwall:

Posted

Cusco kid is Mr whiteline he will get you the best deals on them to and also good deals on the varis coilovers very nice might even let you see what the ride is like on them

  • 4 weeks later...
Posted
Cusco kid is Mr whiteline he will get you the best deals on them to and also good deals on the varis coilovers very nice might even let you see what the ride is like on them

After much PM'ing, we have reached a list of components to tidy up the handling of the Scoob - sorry Geo, we got there in the end!

Parts are on order with Cusco Kid, to then be fitted by myself, set up will then be dialled in by the aforementioned Kid.

I'll detail the mods once the parts arrive if anyone is interested.

  • 3 weeks later...
Posted

Should be collecting the bitz end of next week. Fitting shortly afterwards before final setting up in time for next Lanark Meet. Update to follow.

  • 3 weeks later...
Posted

Finally managed to collect the parts from cusco kid, thanks Geo :thumbup: , on Tuesday night. Can't fit them as I need the car for tonight's meet. I'll make a start to it next week maybe, holidays and such like not leaving much time to fit it all in! Updates will be along soon.

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