Thread: Defender calipers into disco

depends on the disco calipers you have the early ones had 2 lines as per the rangies but my 95 calipers only have a single line coming out of them

Originally Posted by dirtdawg

depends on the disco calipers you have the early ones had 2 lines as per the rangies but my 95 calipers only have a single line coming out of them

Mine have two it's a 93/4 change over model, so if yours only has one line going to the calipers then I need to look at getting the required bits off of a 95 to bolt on to mine and the defa calipers.

Originally Posted by blitz

Found out some more information regarding swaping to defender brakes.

The defender has a single brake line going to it and the disco has two, therefore it is more complicated than simply removing one and fitting the other. So esteemed collegues would anyone like to offer what one would have to do it carry out this modification?

I imagine this is only a case of blanking one pipe and connecting the other to the new defender calipers.

Originally Posted by slug_burner

I imagine this is only a case of blanking one pipe and connecting the other to the new defender calipers.

One pipe is the Primary Circuit which feeds the top cylinder on the front calipers, this line comes out of the master cylinder at the back (closest to the Vacuum Booster).
The Secondary Circuit comes out of the front of the Master Cylinder and goes to a Tee piece and Pressure Reducing Valve, the front line then goes to the bottom pistons on the front calipers. the rear line from the Tee piece and Pressure Reducing Valve then goes to the rear brakes. I would use a Master cylinder from a 94 model that suits the single pipe calipers, unless you know what you are doing, Regards Frank.

This harks back to a conversation with Nicho - perhaps the best way to go would be to use the defender booster and master cylinder as well as the calipers that way it is piped correctly and also matched components.

Dont use a defender booster... just run with '95 disco master and do the caliper conversion.
Easy peasy.

S

Originally Posted by roverrescue

Dont use a defender booster... just run with '95 disco master and do the caliper conversion.
Easy peasy.

S

This would mean using the 95 proportioning valve as well - yes?

You need to replumb the brakes from a front/front-rear split to a normal front/rear split.
On my RRC this was easily acheivable just by rearranging the factory lines and adapters.

With the larger front calipers mine balances best with no proportioning valve. I have 97 disco axles with defender 46mm calipers underneath a rrc.