Thread: Brake Caliper Pistons

Email them, they have been happy to give any information where they can.

Just improving my Defender knowledge.

Are the Defender (pre Puma) 4 pot 46mm pistons or something else?
Are the ventilated rotor Defenders the same size pistons.

Am assuming the rear are 2 pot 31mm pistons?

Diana

I can only say for my 1998 110 Tdi it was 46mm front and back, 12 pistons and you need 3 seal kits. 1 kit does both rears, 1 kit each front.

Here it gets confusing, I have a 1991 Defender, but am fitting 1996 callipers and ventilated rotors.

For the rear axles (2), we are converting to disks from drum and may not use standard calipers so need to work out the braking forces. Am considering using ventilated rotors on all six wheels and therefore different callipers.

As I said, for my 1998 110 tdi (4 pot front, ventilated rotors, standard 2 pot rears, solid rotors) all pistons are 46mm.

I think 90 rears may be smaller but can not say either way.

For what you may or may not use......I have no idea

tee hee hee
thanks for the thread bump Diana
Update from my initial question 13 months ago

I now have the seal kit and a set of new hoses in the spare parts bin
Never bought slugs for the pistons - still deciding I guess - hmmm spose I should buy them as by the time I pull these calipers down Im not going to want to put crusty old slugs back in...
My understanding is 12 x 46mm slugs needed for a deefer with factory discs all round (1993 ish onwards)

Have topped up the fluid a few times - Its on the list I promise

S

The issue is that my Defender 6X6 was a UK build and has never been registered in Australia, the importer/previous owner took the vehicle apart and died before reassembling it.

Therefore I am required to have an engineers certification of compliance for registration and the engineer wants to have the specs of an equivalent 6X6 certified in Australia. The most common Land Rover 6X6 that has been Au certified is the Land Rover Perentie 6X6 which were originally disk front / drum rear, but have now been converted to 6 wheel disk. If I can make my braking at least equivalent of that I'll have no problems.

I know the PBR booster model and am working on getting the PBR master cylinder part number, but it seems the Perentie 6X6 used 4 pot Land Rover 90 callipers on the rear. So I actually need to know the piston sizes on early Land Rover 90 front callipers. (They are a different part number to the 110 or Defender front callipers. (I am also likely to be using ventilated rotors all round.))

Diana, the PBR M/C # is in a thread I started somewhere, IIRC Brian posted the numbers.

I'll do a quick search.

[edit] This thread may or may not help, it just confused me in the finish http://www.aulro.com/afvb/isuzu-land...-m-c-same.html