V6 calipers and brake bias valve - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

11th Nov 04 at 19:44

Hi.... I was just wondering if anyone has adjusted the brake bias valve on their corsa when fitting the bigger calipers up front?

My car is pulling to one side when braking hard and i suspect this may be down to the rear brakes doing most of the braking. As i had new drums fitted a couple weeks back and before then the rear brakes were doing bugger all.

Any advice apreciated!

PaulW

Member

Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline

11th Nov 04 at 19:58

i fit V6 calipers & lowered the car 60mm at same time...

tbh I think each other cancelled it out as when the car was in for its MOT they said the brakes were balanced well which suprised them due to the size of the calipers!

PaulW

Member

Registered: 26th Jan 03
Location: Atherton, Greater Manchester
User status: Offline

11th Nov 04 at 19:59

but as for pulling to one side, just bleed the brakes, front & rear, and topup the fluid see if that helps...

tbh sounds like air in one side of the system!

DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

11th Nov 04 at 20:41

its been bled all round twice already... im pretty confident that theres no air in there

Another reason why i thought the rear was braking too much is since i had the new drums fitted the garage obviously tentioned up the shoes correctly etc and since then the abs has been kicking in more frequently which leads me to believe the rear wheels are trying to lock up

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

11th Nov 04 at 20:53

Sticky caliper then, that's what causes turnign under braking. get it to a MOT tester to have the brakes check, they should do it for free for you, and tell you the balance of the car.

Mistamist

Member

Registered: 16th Jul 03
Location: Gillingham, Kent
User status: Offline

11th Nov 04 at 20:54

the rear drums are self tentioning, and the ABS is probably triggering cos the V6 calipers have a tendancy of locking up the disks, even a slight difference in rotation between the individual wheels will convince the ABS system into you are going into a skid and it will opperate.

DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

11th Nov 04 at 21:21

the calipers were new on a month or 2 ago... and the MOT was done last month and nothing was picked up as unusual.

its just that the ABS has had a tendancy to kick in more frequently since the drums were done (week after mot)

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

11th Nov 04 at 21:23

regarding the original q, i didnt adjust the brake bias with my v6's

Joff

Member

Registered: 17th Oct 00
Location: Cambridgeshire
User status: Offline

11th Nov 04 at 21:43

I've never adjusted mine with lowering and/or fitting bigger brakes up front.

Think I should tho..

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

11th Nov 04 at 22:17

ABS is for girls anyways

Not a fan of V6 calipers, they weight a ton :O

DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

11th Nov 04 at 22:24

haha yea they are quite heavy..

and i think i'll have a check to see if theres any tention on the spring mehanism without the car been jacked up. If there is then i might try taking the spring off to see if i can tell much difference lol

broster

Premium Member

Registered: 6th Dec 02
Location: Drives: E39
User status: Offline

12th Nov 04 at 07:14

quote:
Originally posted by DP.
haha yea they are quite heavy..

and i think i'll have a check to see if theres any tention on the spring mehanism without the car been jacked up. If there is then i might try taking the spring off to see if i can tell much difference lol

my mate runs standard brakes on his 1.6 sport and he had probs with the back end locking up so hye removed the spring, imporved the locking up-dont do it any more-no other side effects eather

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

12th Nov 04 at 08:19

Also had problem on 2L brakes, wound out the bia asjuster on the rear beam and improved things

Wilwood dynalite2 1.13kgs
V6 calipers circa 5KGS
8kg saving (ish)

Siberia

Member

Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline

12th Nov 04 at 10:38

yeh but how much extra to wilwoods cost though ...

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

12th Nov 04 at 10:57

£299+VAT from raldes

But you get 4 pistons instead of 1, they're lighter, more power, and have universal resale-ability.

Siberia

Member

Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline

12th Nov 04 at 11:12

thats just for the cailpers? do they fit strait on? and do they fit the GM 284/288mm disks....

questions questions

DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

12th Nov 04 at 12:58

hmmm... some 4 pot calipers would be nice i guess

how much can you get the kits for?

any reccommended urls?

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

12th Nov 04 at 13:32

www.raldes.co.uk

That consists of, calipers(x2) brackets to fit, 280mm dics, and bolts.
Pads would be needed and new hoses.

4 pots are the way forward

Siberia

Member

Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
User status: Offline

12th Nov 04 at 13:42

ahhhhhhhh!! y didnt i see them a few months when i was ordering my brakes

i always though 4 pots would cost the earth....

DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

12th Nov 04 at 20:17

yea same here .. i wish i had seem em before i got my v6 kit

Is thise the correct kit J1400?
http://www.rallydesign.co.uk/catalog/product_info.php?cPath=562_563_576&products_id=4006&osCsid=058874eb8be94a672c58c3b70773e20a

i still may consider it

so just need pads and hoses... which pads did u get?

you still got original corsa master cylinder?

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

12th Nov 04 at 20:35

You can choose from various temp ranges, personally on a road car ones that bite from 0degrees are best, I have track ones on mine but onld start to work at 200deg, so aren't good on road use.

James R

Member

Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline

12th Nov 04 at 20:37

YEs that's thje kit

Member

Registered: 10th Sep 03
User status: Offline

12th Nov 04 at 21:39

I don't have a brake bias valve

DP.

Member

Registered: 21st Dec 03
Location: Stoke-on-Trent
User status: Offline

13th Nov 04 at 00:07

Hmm...

V6 Calipers - 288mm discs
4pot kit - 280mm discs

How much difference do you reckon there would be with braking performance for both the road and occasional trackday use?

BUt i couldn't see any temp range options for that kit?

I thnk the brake bias valve was only on the 1.4 and 1.6 corsa b's as there was a pressure regulating valves for corsa b's with the smaller engine

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