Brake Pads

The pad retaining springs, showing the two longer fingers on each retainer facing each other. These also have a pin-hole in the longer fingers.

V8 pads are handed - there is an inner and an outer for each caliper, the 'handing' can be seen as a sticking-out bit on one inner corner of each pad, circled. Below shows a pair for one caliper on the left and another pair on the right. Both pairs are the same, which may seem to be incorrect, as the pad that goes in the outside half of the caliper one side of the car goes in the inside half of the other! That puts the circled sticking-out bit on each pad in the same position in each half of each caliper.

With the pads fitted you can see the sticking-out bit uppermost (A), and the curved corner at the bottom (B). You can also see how a protrusion on the lower caliper bridge (C) is what prevents the pads being fitted the other way round:

Note also that the shims are handed - the tabs at A and B are at different angles. This means that they only go on one pad each side, as well as each pad only going in one side of the caliper. After 20 years I only recently wondered how the cut-outs in these shims were orientated relative to the cut-out in the caliper piston, which has to face the spindle. I soon realised that with both shim and pad being handed there is no room for error, but it does mean the cut-out in the piston is at right-angles to the cut-out in the shim, resulting in a rather complex force of the piston on the pad, and - from back pressure of the pad on the disc - of the piston in its bore.

Comparison of 4-cylinder (left) to V8 (right). Rubberised coating on the back of the 4-cylinder with no shim. And despite shims being included with the above set none with this set, even though they did come with retaining springs and split-pins, which isn't always the case.

Chamfering on a new V8 set, thought to be in response to squeal

MG ZS shims with prongs that project into the pistons, similar to Peugeot shims which some have said have cured their MGB squeal. Only one per side on the ZS, whereas I need two for each MGB, or three more ZS pad changes ...