I was just thinking as there would need to be alot more fluid required comparatively to the drums. Esp with 4 pots.
Not advisable to take me for a spin atm, I'd probably not get out of it, or steal it . It's been a while since I've driven NAV


Oooo so is mine But then 1/2 of this area is.

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A smaller MC bore will result in greater braking power for a given pedal pressure, but the pedal will travel further. If you want less force to the pedal, you will want a small MC bore and a large wheel cylinder bore.

But a bit of a balance is needed. If you have too small a bore in your MC, you'll have difficulty adjusting the brakes properly - there will be too much pedal travel.

I couldn't imagine there would be that much travel that the smaller rear cylinders I'm putting in would start working before the fronts do. And then there is the force limiting valve (which actually works in my car) to stop the rears locking up. Or is there something I'm missing here?

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disc brakes are worse, and require a lot more effort for the same stopping power.

No booster on discs...

But when installing discs on a late Mk III Canadian Mini with twin leading shoe front drum brakes, the rear wheel cylinders must be swapped out for 0.625" bore cylinders to prevent rear wheel lockup and ends swapping...ask me how we know.

Brake system components may be different on Australian Minis. Our Mk III Mini 1000s had dual brake master cylinders with front/rear separation.

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Select a gear, bring up the revs and release the clutch...off you go!

This is true. Fit 'Cooper S' rear wheel cylinders.

Changing the master cylinder is not needed, unless you think it's a bit had-it.

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The smaller rear cylinders are to lower the braking power at the back. Discs actually need more hydraulic pressure than drums - if you don't change the rear cylinders, the back brakes will lock up before the front.

The limiting valve only restricts the pressure once you are braking hard. It's sort of like a cut-off valve, once the pressure reaches a certain level, the valve will stop it from going (much) higher. So this shouldn't change your pedal pressure. Is this the 5-way valve mounted on the bulkhead?

Just remember that fitting discs will NOT give you a lighter pedal - infact, it will do just the opposite! Because there is more braking surface on drums, the require less pressure, but since the surface is always in contact, they suffer badly from brake fade.