Hi all,

I have had my custom 9.25" camira setup for a while now and I am now getting to the stage of re-assembling my front end (after the glorious disassembly). My setup consists of the following:
- Holden Camira rotors with Holden V8/VL turbo calipers.
- Drilled to standard mini (101.6mm) pcd
- New reco'd cv's with new Cooper S tapered roller bearings.
- Original Mini drum brake bearing hubs with a mounting plate for the commodore calipers.
Pics here:
http://www.minimoke.net.au

My main questions:
- What master cylinder should I be running for this setup? I.e. can I use the existing setup?
- This is what I had before disassembling it all (with valiant booster): http://moke.kelian.net.au/IM000358a.JPG). Will this be ample or will I need to go down the root of a different master cylinder?
- If yes for the above q'n, how will this affect the rear brakes?
- And finally, if yes for the above, what should I be looking at to fit? I have heard the Mazda 323 and Ford laser master cylinders are what I need? Any idea of what model?

Sorry for the copious q'ns. I have done a huge amount of searching on this site and i'll be bu99ered if I can find it.

Cheers,
Ian

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My Site: http://www.minimoke.net.au
My Moke: 1978 Californian, 1275 A+, 1&3/4" SU, 9.25" Custom Camira Brakes etc...
Currently Dismantled, Front-end Complete, Body about to be resprayed...

The best person to discuss this with would be your engineer.

The master cylinder size would have to be calculated from you piston diameter, old vs new and the pedal ratio. The balance of the car will change also.

I changed an RA23 Celica to run vented discs similar to your description, the engineer did some calcs to check the suitability of the other std components to the new and I had to modify the rear brakes to stop them locking before the fronts.

Best to check with them, after all they are signing off on the mod.

Regards

Daniel

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Videos - Turbocharged A-Series on Dyno & at Wakefield
Mafs waz not my strong subgeckt at skkol

Im impressed with your work, they look like you have spent a long time making them look great.

However, brakes are a ratio (their like reduction gears) you loose movment for an increase in force. This ratio depends on your master cylinder dia and your brake piston dia. The bigger the difference the easier the pedal is to push. but this results in a smaller displacment of the pad relative to the pedal. Ultimatley yo need to know that nearing min pad and rotor thickness you will still have enough throw to keep braking.

I am not near my mini at the moment, but if your car had twin leading drums on the front you should have the bigger of the two master cylinders.

Mini's to my knowledge came out in 2 master cyl sizes (in Oz) and only later twin drum (twin leading) and disc's and if you have one of these they should move enough fluid to the fronts to suit the Camira. However, you might have to back the rear shoes off the drums a bit to stop lock-ups on heavy braking.

I work for a Brake parts company in canberra and I have done the calc's for other setup's. PM me if you want me to try and make something work for you.

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-doing a Degree in Mechanical Engineering,
and a few conversions:
13B Extend in a 1600
4EFTE in a mini ute (all slowly)

That's a nice setup, big caliper isn't it!

Make sure you change your rear wheel cylinders to the smaller 'cooper s'/disc type also to reduce rear lockups.

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Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484