Fitted arb's now very twitchy in the wet
31 August 2011, 07:03 PM
#1
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Fitted arb's now very twitchy in the wet
Hi all
I have a 1995 wrx it which a fitted eibach arb's to which are 24mm rear and 23mm front and i have also fitted CDF drop links.
It also has eibach springs and has had a 4 wheel set up done using prodive settings.
In the dry it has made a 100% improvement on turn in and handling but in the wet it feels like the rear has no grip and steps out very easy into oversteer which does not inspire much confidence with it.
Is this normal with this kind of set up or are the arb's to stiff for my set up?
I have a 1995 wrx it which a fitted eibach arb's to which are 24mm rear and 23mm front and i have also fitted CDF drop links.
It also has eibach springs and has had a 4 wheel set up done using prodive settings.
In the dry it has made a 100% improvement on turn in and handling but in the wet it feels like the rear has no grip and steps out very easy into oversteer which does not inspire much confidence with it.
Is this normal with this kind of set up or are the arb's to stiff for my set up?
31 August 2011, 07:39 PM
#3
23 front is quite big, but not too big if balanced on the rear. 25 rear or middle hole setting if you have an adj 24mm bar would be OK, or 22f (if adjustable), 24r etc. These settings would be a starting point and tunable for personal preference and driving style
31 August 2011, 07:47 PM
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Sorry for hijacking the thread but, is it good combination to put 22mm on front and 22mm on rear with Whiteline droplinks ? Both Whitelines, NOT adjustable.
Cheers
Cheers
31 August 2011, 07:49 PM
#6
Tbh I would be quite happy with that if anything it's too front biased for me 
How much camber have you got on the rear ?
However, I am comparing this with my Perrin and whiteline experience but there's no guarantee that the size of your eibach bars is comparable There are differences in materials and design
How much camber have you got on the rear ? However, I am comparing this with my Perrin and whiteline experience but there's no guarantee that the size of your eibach bars is comparable
There are differences in materials and design
31 August 2011, 09:24 PM
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Tbh I would be quite happy with that if anything it's too front biased for me How much camber have you got on the rear ?
However, I am comparing this with my Perrin and whiteline experience but there's no guarantee that the size of your eibach bars is comparable There are differences in materials and design
How much camber have you got on the rear ? However, I am comparing this with my Perrin and whiteline experience but there's no guarantee that the size of your eibach bars is comparable
There are differences in materials and design The front grip is spot on and needs to be pushed quite hard before it will understeer.
Last edited by bmposer; 01 September 2011 at 07:16 PM.
01 September 2011, 10:54 AM
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A 24mm rear ARB is too stiff for a classic on wet roads, IMHO.
I'd always advise getting an adjustable ARB, you need to compromise sometimes.
dunx
P.S. What's the toe-in/out at the rear doing ?
I'd always advise getting an adjustable ARB, you need to compromise sometimes.
dunx
P.S. What's the toe-in/out at the rear doing ?
01 September 2011, 12:21 PM
#15
That's what I've had fitted + solid d/l and -ve 1.0deg all round.
The rear is at "midddle" position (the less oversteer "outer" position couldn't be used, as it would have fouled brake lines).
I'm not a fan of "twitchy rears"
, and I now find that it's a bit too eager to step out with the stiffer rear (mainly in lower speed turns, like roundabouts, etc.). I might revert the rear back to the OEM 19mm bar, to try to quell it....
Last edited by joz8968; 01 September 2011 at 12:25 PM.
01 September 2011, 12:26 PM
#16
More tyre pressure at the rear will result in even less grip on the wet!
In my previous WRX wagon 22mm front and rear ARBs made it understeery at the limit.
For a newage road based car the best combination is to leave the front alone (20mm) and run a 22mm adjustable at the rear IMHO.
Since the 1994 model is much lighter I think your bars are a bit too stiff for a road car.
If it is a road car I would try 20mm front, 22mm rear.
In my previous WRX wagon 22mm front and rear ARBs made it understeery at the limit.
For a newage road based car the best combination is to leave the front alone (20mm) and run a 22mm adjustable at the rear IMHO.
Since the 1994 model is much lighter I think your bars are a bit too stiff for a road car.
If it is a road car I would try 20mm front, 22mm rear.
Last edited by fpan; 01 September 2011 at 12:28 PM.
01 September 2011, 12:26 PM
#17
That's what I've had fitted + solid d/l and -ve 1.0deg all round.
The rear is at "midddle" position (the less oversteer "outer" position couldn't be used, as it would have fouled brake lines).
I'm not a fan of "twitchy rears"
, and I now find that it's a bit too eager to step out with the stiffer rear (mainly in lower speed turns, like roundabouts, etc.). I might revert the rear back to the OEM 19mm bar, to try to quell it....
01 September 2011, 01:06 PM
#18
More tyre pressure at the rear will result in even less grip on the wet!
In my previous WRX wagon 22mm front and rear ARBs made it understeery at the limit.
For a newage road based car the best combination is to leave the front alone (20mm) and run a 22mm adjustable at the rear IMHO.
Since the 1994 model is much lighter I think your bars are a bit too stiff for a road car.
If it is a road car I would try 20mm front, 22mm rear.
In my previous WRX wagon 22mm front and rear ARBs made it understeery at the limit.
For a newage road based car the best combination is to leave the front alone (20mm) and run a 22mm adjustable at the rear IMHO.
Since the 1994 model is much lighter I think your bars are a bit too stiff for a road car.
If it is a road car I would try 20mm front, 22mm rear.
01 September 2011, 01:10 PM
#19
I never liked T1R's. In my previous car they squeeked like pigs and had too soft sidewalls.
On the track they are like bubblegum.
On a hawkeye WRX I used to run 35 front 33 rear (they were OK-ish at that but I hadn't tried more pressure so can't tell) but a classic is quite lighter so it might not need so much pressures IMHO.
On the track they are like bubblegum.
On a hawkeye WRX I used to run 35 front 33 rear (they were OK-ish at that but I hadn't tried more pressure so can't tell) but a classic is quite lighter so it might not need so much pressures IMHO.
Last edited by fpan; 01 September 2011 at 01:12 PM.
01 September 2011, 01:17 PM
#20
T1R's are ok but you need to be mindful of their weaknesses They do get hot on track and like to squirm underbraking lol. They certainly wake you up if you go a bit hot into a corner Didn't enjoy them at Brands at all in the wet I have to say, there are superior wet tyres out there that's for sure
They do get hot on track and like to squirm underbraking lol. They certainly wake you up if you go a bit hot into a corner Didn't enjoy them at Brands at all in the wet I have to say, there are superior wet tyres out there that's for sure
01 September 2011, 07:17 PM
#21
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It is mainly on slow speed corners it happens but haven't tried to enter one at any speed.
I will try raising the pressures a couple of psi at a time to see how that feels.
The rear toe is 0.02* so its near enought bang on strait ahead.
I will try raising the pressures a couple of psi at a time to see how that feels.
The rear toe is 0.02* so its near enought bang on strait ahead.
05 September 2011, 07:41 AM
#24
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I went to trax yesterday and done a session with a bit more pressures in the tyres.
It was quite wet on track and everyone was saying how little grip there was.
There was no improvement in the car everytime I turned in to a corner the rear just stepped out, it made for a exciting drive but not the way I would like it to handle so I think I'll go back to standard arb and keep my eye out for some smaller ones.
It was quite wet on track and everyone was saying how little grip there was.
There was no improvement in the car everytime I turned in to a corner the rear just stepped out, it made for a exciting drive but not the way I would like it to handle so I think I'll go back to standard arb and keep my eye out for some smaller ones.
05 September 2011, 08:18 PM
#25
This is what is working very very well on mine at the moment
Goodyear Asymetric F1s 34psi Front 32psi Rear
Whiteline 22mm ARB front and rear on mid seting
Droplinks Whiteline
CDF Anti Lift Kit
Goodyear Asymetric F1s 34psi Front 32psi Rear
Whiteline 22mm ARB front and rear on mid seting
Droplinks Whiteline
CDF Anti Lift Kit
Last edited by Steve Whitehorn; 19 September 2011 at 09:54 AM. Reason: got my rears and fronts muddled!
05 September 2011, 09:37 PM
#26
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I am keeping my eyes out for a 22mm rear bar now to see what sort of difference it will make.
And if thats not much better I might try a different set of Tyres.
