mattyboy199 
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Registered: 5th Feb 03
 
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The bias brake valve (may be called something different) adjustment is a case of adjusting a spring. When the car is heavierly loaded the spring adjusts the amount of power fed to the rear drums so not to allow the rear brakes to lock up. If you ve lowered your car this will only improve performance of brakes hence they will never load lock up. I have a GSI so the ABS system acounts for the wheels locking up but otherwise the chances of brakes locking up is reduced because the car sits lower.  
 
Your comments are welcome ! 
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3CorsaMeal 
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Registered: 11th Apr 02
 
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If u adjust the valve after lowering then it will be fine....... 
Lowering the car and not adjusting it is gonna make the rear brakes more likely to lock up, especially when cornering...
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grigglet33 
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Registered: 23rd Mar 01
 Location: East Sussex 
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Lowered mine 60 at the back on 18's the back locks up all the time!!!
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adelcorsa 
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Registered: 21st Apr 03
 Location: ipswich 
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where do u find the bias valve as my mate has a calibra he is strippin and im getting the stuff off this to do the conversion its a four studd callibra bout a H reg
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mattyboy199 
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Registered: 5th Feb 03
 
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Well people read the haynes manual & it basically tells you what it doea as i wrote above it should nt effect your break system as its designed to reduce the chances of wheels locking up so it should nt cause a problem.
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Adam_lee 
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Registered: 23rd Apr 02
 Location: Manchester 
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Sorry mattyboy i dont want to argue but your wrong. youve got it arse about tit. 
 
My haynes manual has the following description: - (i hope this dont break copywrite law) 
 
"the idea of the break bias valve is that, when the car's lightly loaded over the rear wheels, the breaking efort to the rear is limited, to prevent the wheels locking up. With the boot full of luggage, the back end sinks down, and the valve lets full breaking preassure through to the rear. When you slam the suspesion, the valve is fooled into thinking that the car is loaded up, and you might find the rear breaks locking up unexpectedly - could be a nasty suprise on a wet roundabout"  
 
Oh yea, and why is this thread in the classified and wanted forum? 
 
[Edited on 11-05-2003 by Adam_lee]
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mattyboy199 
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Put it in wrong one by accident. Well mine has never locked up & i m sure if its there to reduce locking up it does nt create problem.
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Mikorsa16v 
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Registered: 2nd Sep 02
 Location: Burgess Hill, West Sussex 
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also if its a 1.2 16v or less then it dont need adjustin cos the vale is in the brake line, not affected by lowering (also says that in max/hayes)
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Adam_lee 
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Registered: 23rd Apr 02
 Location: Manchester 
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My 1.2 16V SXI has a bias valve. I know cos ive adjusted it.
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dig dave2811 
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Registered: 6th Jan 03
 Location: newport sout wales WCM 
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what so i dont have to alter mine, i have a 1.2 8 valve?
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Adam-D 
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Registered: 11th May 02
 Location: Cheshire 
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mine is faulty! 
need a newun
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antscorsa 
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Registered: 11th Aug 02
 Location: london 
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lower engined cars shouldnt have one sez haynes. my 1 litre never but not sure on any others
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mattyboy199 
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Registered: 5th Feb 03
 
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quote: Originally posted by antscorsa 
lower engined cars shouldnt have one sez haynes. my 1 litre never but not sure on any others 
   
 
What about the GSI ? What does it say ? 
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mattyboy199 
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Registered: 5th Feb 03
 
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Hello ? 
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