Boot clean out surface rust in bottom of box needs treating
Before bottom of box rusts out!

Going to remove tank to clean boot floor behind . Surface rust where strap bolts to floor. Hope the tank isnt hiding any nasties.

Going by this document (Stage 4 ) the brake master was reduced to 0.625" at car 2057. viewtopic.php?f=49&t=92146

Ok thanks that helps .625 "

Go for a Cooper S brake master cylinder. )0.7" bore and the larger/taller tank. Pretty sure you won't find a 0.625 master easily. To improve braking on the 997cc Cooper you can modify the calipers (simple machinig exercise) to accept the 998cc disk pads which are of greater size and still available from EBC.

Does it matter which one of these i use. I seem to have more than one type in each size???

Same in .75 size top is not the same???

Ideally you need the 0.7" cylinder with the larger/taller reservoir can as per the Cooper S. Use the 0.75" cylinders for the clutch.

The clutch off car next to new one.
Mirror image of each other???
This clutch master still works fine just dirty.
Was going to refit.

One of those is a brake MC.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

The seal kits for the master cylinders are very cheap, might be worth stripping it down and checking them before you install them.

You’d hate to install them and then find they don’t work

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