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Author rear brakes.....
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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24th Apr 06 at 12:40   View User's Profile U2U Member Reply With Quote
i still have a drum setup on the rear of the corsa, and i'm wishing to change to discs.

I'm also wanting to run a single rear brake line through the car with a bias valve, then T it to the two rears....

Has anyone on here done this to their car?

[Edited on 24-04-2006 by AK]
Marc
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Registered: 11th Aug 02
Location: York
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24th Apr 06 at 12:44   View User's Profile U2U Member Reply With Quote
Out of interest why do you want to fit rear disc's? I thought they can make the car unstable under braking?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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24th Apr 06 at 12:45   View User's Profile U2U Member Reply With Quote
..... hence bias valve
vibrio
Banned
Registered: 28th Feb 01
Location: POAH
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24th Apr 06 at 12:46   View User's Profile U2U Member Reply With Quote
why not fit bias valve first to see if you can avoid walls first
Ajones_17
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Registered: 20th Jun 02
Location: Sunny Wigan Drives: BLACK 03 VTS
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24th Apr 06 at 12:46   View User's Profile U2U Member Reply With Quote
If fitted right(bias valve) they will improve braking greatly and look 1000 times better
J1M
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Registered: 25th Nov 05
Location: Milton Keynes. Drives: 1.6 8v T40'd Nova
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24th Apr 06 at 12:46   View User's Profile U2U Member Reply With Quote
Rear discs aren't really necessary unless you're running big BHP or are intending to do plenty of track days and need the extra braking.

If the bias isn't set up correctly they can make the car unstable under braking as the back end wants to overtake the front.

Jim
Marc
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Location: York
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24th Apr 06 at 12:46   View User's Profile U2U Member Reply With Quote
Ah right.
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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24th Apr 06 at 12:47   View User's Profile U2U Member Reply With Quote
ross.....

( ithink ) the corsa currently has two pipes going to the rear ( i may be wrong)

but yes..... change the lines to one, with valve may be an early test/option
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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24th Apr 06 at 12:48   View Garage View User's Profile U2U Member Reply With Quote
depends how they are set up

my drums used to lock up under really heavy braking, and they were really snatchy

brosters car has discs and its much more progressive, you can brake harder without it locking

also, with a bias valve, you can adjust the amount of force to the back so it doesnt lock so easy
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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24th Apr 06 at 12:49   View User's Profile U2U Member Reply With Quote
yes..... i know what the valve does

HAS ANYONE DONE IT???
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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24th Apr 06 at 12:49   View Garage View User's Profile U2U Member Reply With Quote
the bias valve should self adjust depending on the pitch of the front of the vehicle, ie how hard your braking
Robin
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24th Apr 06 at 12:50   View Garage View User's Profile U2U Member Reply With Quote
i was replying to flat4 Adam

i havent done it so i'll leave the thread
timrud_
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Registered: 3rd Jul 04
Location: Sheffield
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24th Apr 06 at 13:21   View User's Profile U2U Member Reply With Quote
Get a bias pedal box, you can adjust it for how wet the roads are etc, and the feel of the pedal is awesome

[Edited on 24-04-2006 by timrud_]
AK
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Location: Aberdeen City
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24th Apr 06 at 13:26   View User's Profile U2U Member Reply With Quote
not wanting to spend that much
ed
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Registered: 10th Sep 03
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24th Apr 06 at 13:29   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by J1M
Rear discs aren't really necessary unless you're running big BHP or are intending to do plenty of track days and need the extra braking.

If the bias isn't set up correctly they can make the car unstable under braking as the back end wants to overtake the front.

Jim
Good job that AK's car is a big power track car then isn't it.
JadeM
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Registered: 9th Feb 06
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24th Apr 06 at 13:33   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by ed
quote:
Originally posted by J1M
Rear discs aren't really necessary unless you're running big BHP or are intending to do plenty of track days and need the extra braking.

If the bias isn't set up correctly they can make the car unstable under braking as the back end wants to overtake the front.

Jim
Good job that AK's car is a big power track car then isn't it.


Surely you mean down on power gravel car
Tom
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24th Apr 06 at 13:36   View User's Profile U2U Member Reply With Quote
AK
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24th Apr 06 at 13:57   View User's Profile U2U Member Reply With Quote
cars engine is in bits
Stu_22
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Registered: 25th Mar 02
Location: Luton
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24th Apr 06 at 14:45   View User's Profile U2U Member Reply With Quote
The guy on mig web (lee303) that has the red nova has done it
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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24th Apr 06 at 15:08   View User's Profile U2U Member Reply With Quote
just ordered two bias valves (screw)..... have a bodge master plan to use both in the pug this weekend (trackday) then once i get its single pipe run through the car, take 1 for it, and one for the corsa

Any possible pitfalls over fitting bias valves rather than the standard ballbearing type compensators?
Lucky B
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Registered: 7th Apr 02
Location: Lunatic asylum. Drives: Hard & Fast.
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24th Apr 06 at 15:44   View User's Profile U2U Member Reply With Quote
Bodged brakes...

Oh great!
AK
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24th Apr 06 at 15:51   View User's Profile U2U Member Reply With Quote
hehe..... i love it when a plan comes together
bradfincham
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Registered: 20th Sep 02
Location: East Of England Drives: Clio 172
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24th Apr 06 at 17:09   View User's Profile U2U Member Reply With Quote
with that setup your not actually put more braking force to the rear your just limiting how much goes to the rear.

I would say a t piece somewhere near the rear beam would work well, as long as you use good copper brake pipe with flexi connectors.
Lucky B
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Registered: 7th Apr 02
Location: Lunatic asylum. Drives: Hard & Fast.
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24th Apr 06 at 18:43   View User's Profile U2U Member Reply With Quote
As long as we dont do some AK style swappy endy stuff i'll be happy...
c20let
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Registered: 25th Jun 05
Location: Aberdeenshire Drives: VXR Astravan,Evo 9GT,mr2 tbo
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24th Apr 06 at 19:26   View User's Profile U2U Member Reply With Quote
mines is going to be running the 1 bias valve then tee'd off.
will be doing it in the next few weeks

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