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Series 2a - Dual Circuit Brake Conversion

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minitici Avatar
minitici Douglas Anderson
Dunfermline, Fife, UK   GBR
1937 Austin Seven "Hamblin Cadet MK2 Special"
1967 Other Kit "Cox GTM Coupe"
1968 Other Not Listed "Raven 750 Trophy Racer"
1969 Land Rover Series IIA "88" Series IIa Land Rover"    & more
My 1969 88" Series 2a Land Rover is currently going through a complete re-build.

The braking system was the single circuit type and had seen better days.

I have taken the opportunity to upgrade the brakes to a dual circuit system.

My approach was to modify the pedal box to accept twin 5/8" 'Girling' type master cylinders acting on an adjustable balance bar assembly fitted to the pedal.

This enables me to set the front/rear bias on the brakes and an added benefit should be to minimise effect of the tendency of the brake shoe pull-off springs of retracting the shoes too far and causing a long pedal.

The original single master cylinder was 3/4" bore and the new system has two 5/8" bore cylinders which should give about 38% more swept volume and give a shorter pedal.

Hopefully the pedal force required will still be acceptable, I don't really want to have to go to boosted brakes.

I have put together a short video of the conversion of the pedal box to take the twin master cylinders.

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ohlord Avatar
ohlord Gold Member Rob C
North of Seattle, N.W., USA   USA
1957 Land Rover Series I "EYEYIYI"
1971 MG MGB
1971 MG MGB "Bedouin 2"
Very nice.
I'm converting through the floor to hanging master clutch and brakes and front discs on my Chevy small smallblock V8 5 speed build 1957 Series 1

20180426_121931.jpg    45.2 KB

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