Thread: Series 2A Brake upgrade and Dual Circuits

Hi All,
I fear I am asking something that will have been explained many times before but I cannot find what I need. I am rebuilding a Suffix D, 2A 109 Six cylinder Station Wagon. The original remote brake booster that is located beside the air cleaner has been looked over by a professional and I have been told it is dead and cannot be overhauled. I have therefore sourced a Series 3 six cylinder pedal box with booster, and a series 3 wing top as I believe that you need the cut away to make the booster fit. I understand that I need to do away with the original brake light switch as the Series 3 booster has the switch within it; and so to my question(s). If I want to change the brakes to a dual system how are the brake pipes connected? I was going to install a Defender brake master cylinder to the Series three booster giving me the front and rear brake outlets (Not 100% sure if this is correct but read somewhere that it was recommended). I assume the same single line runs to the rear of the vehicle and into the three way connector on top of the axle so no real change? How do I do the fronts. Would a three way connector located in place of the old 4 way with switch be the best thing to do. Could then take a feed to each front wheel?

Lastly, is there anything else I need for this conversion. The vehicle has 11" drums front and rear, including the 3" shoes on the front so I am hoping she will pull up quickly for city driving.

Thanks in advance.

Did the brakes work OK with the remote booster that was fitted ? This company can overhaul and will make parts to fix boosters http://www.hydroboost.com.au/
They also supply reconditioned boosters.

My Series III shorty was fitted with a LWB braking system. No shuttle valve fitted so no warning light but if one circuit failed I think you'd notice the reduction in braking.

DSCN2326 by Colin Radley, on Flickr

DSCN2466 by Colin Radley, on Flickr


Colin