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16v
28-04-15, 07:21 PM
Hi guys just wanting to know what way to reduce the pressure goin to the rear brakes I know I can put in a couple of bias valves but also heard about people using mk3 astra rear hoses as they have a reducer built in. Any help would be great thanks

Benn
07-05-15, 03:29 PM
I use the ones fitted to a Gsi m/c. But i run a single brake line to the rear to give a better pedal.

Only ever locked one wheel up then i broke hard for a corner cause i wasn't watching what i was doing.

craig green
08-05-15, 07:23 PM
Another trick is to cut down the rear brake pads to reduce the pad contact area.
Proper way obviously is to reduce the bias/pressure in the rear hydraulic fluid.

16v
09-05-15, 08:52 AM
Iv got a gte master cylinder on mine so should be Ok then? I take it the ports with the extended bits are the restricted ones?

Benn
09-05-15, 09:49 AM
Yes, the screw it bits are the valves. If not look at aftermarket vales (Wilwood and such make them)

Ah, having looked for you, you can by these..

http://www.ebay.co.uk/itm/2Lbs-Wilwood-Universal-Residual-Pressure-Valve-WITH-FITTINGS-/351160902259?pt=LH_DefaultDomain_3&hash=item51c2d22273

I'm unsure on what pressures you'd need tho.

I was talking of these at first..

http://www.ebay.co.uk/itm/Brake-Proportion-Adjustable-Prop-Valve-Brake-Bias-Adjuster-Knob-Type-Brisca-F2-/161328045747?pt=LH_DefaultDomain_3&hash=item258fe69eb3

craig green
09-05-15, 03:34 PM
Iv got a gte master cylinder on mine so should be Ok then? I take it the ports with the extended bits are the restricted ones?

All Novas had rear drums, so no a std MC wont be right for 16v Astra GTE discs.

rich a
09-05-15, 06:15 PM
So if u have a Astra gte rear set up what mc should you be using Craig ?

Benn
10-05-15, 11:33 AM
You can only use a Nova MC. That's all that fits. Well a Early Cav ones fits. But you'll need all new brakes lines.


I use a std Nova gsi MC, i only run one line to the rear tho. But it works fit.

craig green
11-05-15, 07:46 PM
So if u have a Astra gte rear set up what mc should you be using Craig ?

There isnt one, you just fit discs & drive accordingly. Best to keep the drums then ;-)