Brake Discs Sizes

[Monty_CZ]

Hi all,

I'm going to change rear differential for LSD one, so I'm going to change rear drums to discs also. At the front I have 240 mm brake discs and master cylinder is standard 22 mm without servo. Rear ones will be 253 mm solid. Should I also change front brakes for 260mm? Or is it good to have 240 at front and 253 at rear?

Thanks for advices!

 

 

[steve in stockport]

Can't help with whether 5he 240/253 brakes will work, but if you go for the 260mm discs on the front which were fitted to a few sierras you'll also need the matching calipers and carriers to fit them.

[Snapperpaul]

The most important thing is that the rears don't lock before the fronts

You should consider this more before just bolting rear discs on

If you have brake bias setup you can dial back the rears

[Monty_CZ]

ok so I can install brake bias valve and I should be safe (I wanted to do it anyway). But what brakes configuration (sizes and MC) people use when they have rear brake disc?

[Longboarder]

When I fitted a sierra viscous LSD to my drum braked rear end I did not change the drive shafts or brakes. The problem is the change from push fit inner tripode joint to 'bolt on' lobro joint. I discovered that the lobro joints had the same internal spline as the tripode joints, at least on my car. (Donor was an 85 2.0L injection sierra) It was a straight forward process of removing the inner tripode and replacing it with a 100mm lobro, removing the old diff and fitting the new and bolting it all together. A few pics below.

 

Nigel