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Author Track day people, front anti roll bar on astra g? Worth doing?
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
2nd Nov 12 at 10:53   View User's Profile U2U Member Reply With Quote

Some of you make know i have an astra mk4 van I use on track mainly, occasional road use. Have polly bushed, coilovers, rear anti roll bar, castor bushes, run camber on track, also have rear camber shims, one thing I have not done is the front anti roll bar,

Question is. . . Is it worth doing? And . .

Choices are whiteline, 22mm fixed
Or h&r that's 24mm and has 2adjustments?

White line have great reputation but can't ignore the h&r one cos its thicker and can adjust. Any one have any advice?

Here is little pic of van also . . .

AK
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Registered: 5th Jul 00
Location: Aberdeen City
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2nd Nov 12 at 12:36   View User's Profile U2U Member Reply With Quote

buy one, try it... see how it feels (can easy diconnect in minutes to test back-to-back).

If you prefer with, keep
If you prefer without - sell

There may be times where the adjustable would be better - different tracks, wet weather etc.

Simply having a bigger bar diameter doesnt mean it'll be stiffer. It may be hollow, less rigid steel etc
3CorsaMeal
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Registered: 11th Apr 02
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2nd Nov 12 at 12:38   View User's Profile U2U Member Reply With Quote

From the photo i would say get the whiteline one.
AK
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Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
2nd Nov 12 at 12:42   View User's Profile U2U Member Reply With Quote

Have a read here - http://trackscotland.co.uk/forums/viewtopic.php?t=3006
timmee
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Registered: 28th Jul 06
Location: watton, norfolk
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2nd Nov 12 at 12:57   View User's Profile U2U Member Reply With Quote

try one off an astra h twintop think they are 22mm
smcGSI16V
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Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
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2nd Nov 12 at 13:16   View User's Profile U2U Member Reply With Quote

If I was to go for one it would be the adjustable one. If it didn't work sell it on. At least you can tick it off as tried.
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
2nd Nov 12 at 14:41   View User's Profile U2U Member Reply With Quote

It's ment to be bit of a pig to do, have to drop the front subframe to get to it so was hoping to get it right at first attempt, I have a whiteline rear arb, white line camber shims so seems to make sense going to whiteline to match rear.

Just like the sound of stiffer and adjustable h&r but that's twice the price, also stiffer may not be beta
Corsa_Sport21
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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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2nd Nov 12 at 14:52   View User's Profile U2U Member Reply With Quote

Speak to Novaneil off here, pretty sure he has the full Whiteline catalogue of parts on his Astra Coupe which he uses on track.
Alex_Rally
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Registered: 6th Sep 09
Location: Tyne and Wear, gateshead
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2nd Nov 12 at 16:27   View User's Profile U2U Member Reply With Quote

the van looks sweet like
smcGSI16V
Member

Registered: 26th May 03
Location: Farnborough Drives: Thurlby 888 CDTi No.98
User status: Offline
2nd Nov 12 at 17:35   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Corsa_Sport21
Speak to Novaneil off here, pretty sure he has the full Whiteline catalogue of parts on his Astra Coupe which he uses on track.


And his handles the bollox and goes like the clappers.
corsadonk
Premium Member

Registered: 4th Jul 09
Location: Marlborough, Wiltshire
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2nd Nov 12 at 18:00   View Garage View User's Profile U2U Member Reply With Quote

Like you've said it's a big job, so it might be worth finding someone has done it in the past.
Ash5
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Registered: 26th May 08
Location: hull
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2nd Nov 12 at 18:15   View User's Profile U2U Member Reply With Quote

What engine is in the van?
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
2nd Nov 12 at 20:04   View User's Profile U2U Member Reply With Quote

rough spec of the van is:-

engine:-
astra vxr engine conversion . . z20leh
front mount intercooler
3 inch exhaust from turbo back
romanian hi flow inlet manifold
oil cooler
forge re curc dump valve
larger top hat
tripple fan set up
larger ally imprezza radiator
ducting behind bumper for all air to go through radiator!
all thats needed to go up to phase 3.5,
last rolling road gave 323hp and 413lb torque.............. Now 299 bhp and 360
or low boost 256hp and 315lb............now 269 and 270lb
engine bay painted up in flip

simce those power figues power has been dropped to make it beta on track, i now have between 290 and 300bhp from 4k revs all the way up to 7k! so much beta from track use!

gearbox:-
m32 6 speed gearbox with vxr clutch
wavetec lsd differencial

Suspension:-
kw v3 set up front and rear....... Just sold this to change for Gaz golds.
whiteline camber shims on rear
adjustable drop links
whiteline rear anti roll bar
white line adjustalbe castor bushes in front wish bones
white line bushes in front wishbones
camber bolts

brakes:-
K sport 8 pot calipers
330mm disks so 17 inch wheels can fit over
pagid r27 pads
groved rear disks
yelow stuff rear pads
braided lines front and rear
dot 5.1 racing brake fluid

wheels:-
td pro 1.2 these are 17 x 9j....... bit wide really but squeeze in
235/40/17 toyo r1r tyres for road and wet track

Vectra wheels with 215/45/17 yoko a048 tires , use with spacers

Set of 17x8 inch wheels with 240 width slicks for dry track use, also use with spacers

Bodywork:-
front arches cut, re shaped, welded up for extra clearance but still loook oem to normal people
raised bonnet for cooling
wings and bonnet extended over lights
gsi replica bumper, with areo catches to remove it in around 30seconds.
spoiler
colour coded
air ducting through headlight


inside:-
clio 197 half cage modified to fit, means i can run slicks on track with a cage!
carpeted rear with carbon fibre look panels front and rear
cobra evo seats with carbon look centre cousions, soon to have backs painted in flip
black 4 point harnesses
boost gauge
fans and low/high boost switches
alpine dvd headunit, from another car so got put in
alpine speakers and focal slim sub for the road!

timmee
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Registered: 28th Jul 06
Location: watton, norfolk
User status: Offline
2nd Nov 12 at 20:52   View User's Profile U2U Member Reply With Quote

just astra twintop is 24mm and i'm fairly sure it'll fit
Mieran
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Registered: 28th Jan 08
Location: Newcastle upon Tyne
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3rd Nov 12 at 00:19   View User's Profile U2U Member Reply With Quote

I personally wouldn't, but would raise the spring poundage rate and get couple of them rose jointed drop links from 888dan.

Then again I'm lazy and dropping subframe etc is something I can't be bothered doing.

If you deffo want to do it though might be cheaper to get one from another Astra, I would guess the VXR would have the thickets one?
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
3rd Nov 12 at 14:45   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Mieran
I personally wouldn't, but would raise the spring poundage rate and get couple of them rose jointed drop links from 888dan.

Then again I'm lazy and dropping subframe etc is something I can't be bothered doing.

If you deffo want to do it though might be cheaper to get one from another Astra, I would guess the VXR would have the thickets one?


I have rose jointed drop links already, cost of upgrading roll bars is to to expensive, more bothered about getting it right first time than the price. Lol

Done things cheaply before and ended up replacing most things since with beta, like brakes and suspension.

Am having Gaz golds made for the van with custom springs and valving so hopefully that will improve things more. Just wanna get the most out of van I can and still keep it sensible.
Mieran
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Registered: 28th Jan 08
Location: Newcastle upon Tyne
User status: Offline
3rd Nov 12 at 16:23   View User's Profile U2U Member Reply With Quote

what spring rates are you getting with the gaz golds?

Also looking at that pic, the back end could do with being a little lower so maybe you can measure free length of spring on now and get gaz to make you a shorter one.
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
3rd Nov 12 at 16:31   View User's Profile U2U Member Reply With Quote

That was the lowerest my kw would go on the rear and that was with spring adjusters taken out.

Got my cheap coilovers back on the van now which do sit a little lower, my 17x9 inch wheels catch a bit so may need to get grinder out if I go much lower.

To got as far as spring ratings yet for the Gaz, talking to mike at Corby Motorsport who is in contact with Gaz. Sent pictures over, hopefully talking spec on Monday.
FlamingCorsa
Member

Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
3rd Nov 12 at 16:39   View User's Profile U2U Member Reply With Quote

Few other pictures at donington,











Wrighty
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Registered: 28th Feb 04
Location: Howden
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3rd Nov 12 at 16:47   View User's Profile U2U Member Reply With Quote

smaller one on the front compared to your rear, see how it goes
dewismotorsport
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Registered: 16th Feb 08
Location: Coventry & Poole
User status: Offline
4th Nov 12 at 13:28   View User's Profile U2U Member Reply With Quote

What's Bo Nielsen running as that certainly handles well, I'm pretty sure mk4 and mk5 parts are interchangeable
SetH
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Registered: 15th Jul 01
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5th Nov 12 at 11:17   View User's Profile U2U Member Reply With Quote

Awesome Van, that is some spec!

What aspect of handling are you trying to improve/correct with regards to handling? Is the rear ARB adjustable?
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
5th Nov 12 at 15:27   View User's Profile U2U Member Reply With Quote

Yea rear arb is adjustable, the handling is good to be fair just wanting to get the most potential from it I can. And front anti roll bar is one thing I have not done. The van looks to have quite a lot of roll in the corners on pictures also, think new suspension will be stiffer that should stop some roll,
Novaneil
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Registered: 26th Oct 06
Location: Leamington Spa
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5th Nov 12 at 16:47   View User's Profile U2U Member Reply With Quote

Hello, as you are aware I have a similar spec but I do run the Whiteline front ARB in addition to all there other products. It is a fairly large job to fit as the subframe, wishbones & steering rack all need lowering.
With regards to the difference. Well prior to fitting I found the car at its best with the 2nd from hardest ARB setting on the rear (and lowest setting in the wet). I opted for the non adjustable front ARB as I didn't want to go so stiff that it'd introduce understeer. As a result I've found with the rear on its stiffest its now the perfect balance. I run 1.5 degrees front Camber which is a nice compremise. My mate runs all the same handling mods but runs 2 degrees. As a result it pulls itself over the road more than mine but does feel slightly better on track.
So to answer your question. Yes I did feel a difference, definately noticeable on track. Not so much on road though, just the front end feeling slighty tighter. Dooooo itttttt
FlamingCorsa
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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline
5th Nov 12 at 21:55   View User's Profile U2U Member Reply With Quote

Think it could be worth going for the whiteline one then just so I don't go to stiff, and at least the products are matching. On the road I have put my camber down to 0.5, how do you tires last with 1.5 degrees?

Also how did you set up you adjustable drop links?

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