Outer Limits 4x4 Board

Has anyone changed their brake master cylinder and or brake booster when going to Hilux diffs in their sierra ? IF so why and what did you endup using ,and was there any mods to make the new unit fit.Has anyone ever had problems with rear wheel lockup with the sierra master cylinder using lux diffs,Or fitted a adjustable bias valve?Do Sierra's have a load sensing proportioning valve?

I keep having rear wheel lockup when i have to brake hard and ive tryed clamping the rear brake hose to the wheel cylinders.....to see if i get the front to lockup but i can't ,there for i think the standard Jimny master cylinder is giving way to much fluid to the rear and not enough to the front.Does anyone have any suggestions ?

hey mate, i do have the same problems as you, in that the rear wheels will lock up before the front brakes do anything. i was never concerned to much as it was a rock crawler and i wasnt to fased about stopping in a hurry.


just my 2 cents

Cheers joel

salli wrote:Has anyone changed their brake master cylinder and or brake booster when going to Hilux diffs in their sierra ? IF so why and what did you endup using ,and was there any mods to make the new unit fit.Has anyone ever had problems with rear wheel lockup with the sierra master cylinder using lux diffs,Or fitted a adjustable bias valve?Do Sierra's have a load sensing proportioning valve?

I keep having rear wheel lockup when i have to brake hard and ive tryed clamping the rear brake hose to the wheel cylinders.....to see if i get the front to lockup but i can't ,there for i think the standard Jimny master cylinder is giving way to much fluid to the rear and not enough to the front.Does anyone have any suggestions ?

do your front get any fluid to them??
try bleeding it again...