Rear brake cylinders

[novalovingned]

Im having a spot of bother with these. There seems to be a couple of different sizes available.

Does anyone know what bore size etc i will need for a Mk1 1984 1.2?

I thought all the drums from a 1.0 - 1.6 nova were all the same?

Any help guys?

[ant_tay]

give a motor factors your reg and they will tell you what ones you need

[mowgli]

basically, for about ten minutes in 1983 they fitted the early type of manually adjustable brakes..... then all of the other novas which had self(now there's a joke) adjusting brakes had the later ones

[novalovingned]

Ant: Ive done that mate and they have still said there are 2 sizes.


Mowgli: Yeah ive heard about that, mine are the "self adjusting" type.


Anyone know what is meant when they say the bore size is x amount of mm's? What part are they one about? pistons?

[mowgli]

the rear wheel cylinders is a bit of round tube with a piston at either end and a pipe bolted in the middle next to a bleed nipple......
the bore size is the size of the inside of the round tube..


as far as i know, they are all 17.5mm

[phazer]

very late Novas have the same rear brake setup as early corsas with slightly different cylinders. The bore only matters if they are going to sell you a repair kit (saving you the need to get the bolts and brake line undone). If you're replacing the whole thing then you should be fine with the post '83 jobby.

[novalovingned]

Great cheers for the info guys :)