4 replies to this topic

[wednesdayite]

Morning boys n girls. I've got a 76 clubman and I've dropped a 1275gt motor in it. how do I know what size disc brakes to put in?. over here everything has to be certified after the work is done. I much appreciate your input. thanks.

[nicklouse]

You can fit either size. Really depends on your wheel size.

 

the GT came with both 7.5” and 8.4” discs.

[mab01uk]

Disc brake kit for 10" wheel early 1275GT and Cooper S:-

https://www.minispar...MS.aspx|Back to

 

Mk3 Cooper S and 1275GT Servo Kit:-

http://www.minispare...ssic/SEN43.aspx

 

Or you could fit the later 8.4" discs fitted to all 12" wheel Minis (including the later 1275GT) and the servo/master cylinder for dual circuit brakes fitted from 1988/89 to 2000.

Edited by mab01uk, 16 December 2023 - 12:56 PM.

[sonikk4]

If it helps, my 74 Clubman i converted from all round drums to Cooper S 7.5" discs, Cooper S master cylinder, no servo assistance (unless you have a medical issue you really don't need it in a car that small)

 

Now this was with the original 998cc engine which was a peppy little unit and the car would happily stop from legal or not quite legal speed limits here. And it would pull up sharpliy.

 

I will have a cheeky little 1293 Seven port motor going in once its been on the engine dyno and i will run the same brakes with upgraded pads. All of this is on 10" Cooper S steel wheels. No servo.

[Ethel]

If it needs to meet original standards they changed around '76

 

Pervious - 10 inch wheels, 7.5 discs, single circuit plumbing (with servo)

 

Post - 12 inch wheels, 8.4 discs, dual circuit brakes

 

Both used spacered rear drums.