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anybody knows, how the s2 coupe 3b brake pressure regulator works?
i want to push more brake pressure to the rear. i am thinking about unplug the original pressure regulator and put an adjustable regulator to the rear system.
any idea?
anybody knows, how the s2 coupe 3b brake pressure regulator works?
i want to push more brake pressure to the rear. i am thinking about unplug the original pressure regulator and put an adjustable regulator to the rear system.
any idea?
What the hell do you want more braking at the rears for?
Why not just you an in line bias (proportioning) valve? Although that said, they are normally installed in the read line to limit the pressure to the rear, not increase it. You would have to fit a dual line valve which balances front and rear but that will still only change the % front to rear, not increase the absolute rear pressure.
On a standard braking system, the fronts receive full pressure and the rears receive a proportion of that according a compensator/regulator valve attached to rear axle. On the S2 there is no regulator valve so I assumed that the fronts and rears both receive full pressure all the time so you cannot easily increase the pressure to the rears, only change the bias.
Fitting larger rear calipers would increase the braking force at the rears with the same pressure.
Cheers n
Si
95 ABY S2 Coupe - Ragusa Green Subtle mods here and there
2011 A5 3.0 TDi - Lava Grey With every option available (except a towball)
What the hell do you want more braking at the rears for?
Why not just you an in line bias (proportioning) valve? Although that said, they are normally installed in the read line to limit the pressure to the rear, not increase it. You would have to fit a dual line valve which balances front and rear but that will still only change the % front to rear, not increase the absolute rear pressure.
On a standard braking system, the fronts receive full pressure and the rears receive a proportion of that according a compensator/regulator valve attached to rear axle. On the S2 there is no regulator valve so I assumed that the fronts and rears both receive full pressure all the time so you cannot easily increase the pressure to the rears, only change the bias.
Fitting larger rear calipers would increase the braking force at the rears with the same pressure.
Cheers n
Si
i have cayenne 6 pot fronts and 996 biturbo 4 pots on the rear. the car nose touch the road and the rear goes up. this is my problem.
there is some kind of pressure regulator under the master cylinder.
Note that Audi increased the rear brake pressure on the S2 somewhere along the way... I don't have details to hand here, but 3B rear pressure is lower than late ABY.
With such a radical upgrade I agree the stock proportioning valve is kind of pointless - better to fit something adjustable to get the balance where you want it. Tilton, Wilwood, AP and others sell such variable valves from normal motorsport places.
i have cayenne 6 pot fronts and 996 biturbo 4 pots on the rear. the car nose touch the road and the rear goes up. this is my problem.
there is some kind of pressure regulator under the master cylinder.
Now if you apply more pressure to the rear, you might end up having the car oversteer under hard braking. I'd say that's quite unpleasant effect. I have this with my 90q, with baby brembos + 323 disc at the front and urS4 calipers and 270 discs at back. My suspension is quite soft, so the back of the car lifts and nose dives under hard braking which is also causing weight transition.
i only just started thinking of this but heat may become a issue of the rear since they are solid disc's but i guess quite a few cars from the >80's used solids on the front
i only just started thinking of this but heat may become a issue of the rear since they are solid disc's but i guess quite a few cars from the >80's used solids on the front
i pluged the front sytem direct from the master cyl to the abs. i pluged an adjustable brake pressure regulator between the master cyl and the abs block at the rear.
now i can make bigger pressure on the rear, but i can modify my springs .
i realyzed i have typ85 springs in my car. maybe too soft.
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(except a towball)
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