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Identifying brake calipers Cooper or Cooper S?

Posted: Sun May 29, 2011 11:20 pm
by rolesyboy
Hi. I have aquired a couple of sets of brake calipers, hubs, shafts etc which are either Cooper 7" or Cooper S 7.5". Can anybody tell me what part numbers I need to look for and where they can be found please? (Before you say it I don't have any 7 or 7.5 discs to measure- only hubs shafts calipers and drive flanges)

Cheers. Mark

Re: Identifying brake calipers Cooper or Cooper S?

Posted: Mon May 30, 2011 12:16 am
by ivor badger
For calipers, check the pad shape. For discs, check the design of the driving flange and CV spline size, even the hub nut size should do.

Re: Identifying brake calipers Cooper or Cooper S?

Posted: Mon May 30, 2011 9:52 pm
by rolesyboy
Sorry but I have nothing to compare them to for pad size etc. Anybody know where I will find the part numbers? I have found some on the caliper body but cannot seem to cross reference them. They are as follows:
3242813
BA21240
3242816 (or could be a 0)

Sorry but these are my best guesses as the numbers are ever so small and under 40 years of crap so bit difficulty to read. Cheers guys.

Re: Identifying brake calipers Cooper or Cooper S?

Posted: Mon May 30, 2011 10:23 pm
by 1071bob
'S' calipers have 1.75" diameter pistons, the Cooper ones are smaller.........1.5" dia I think.

Re: Identifying brake calipers Cooper or Cooper S?

Posted: Mon May 30, 2011 10:36 pm
by JC T ONE
Very easy, shaft / splines / nut on Cooper, is the same size as std Mini, and S is MUCH bigger.