MGB single line v dual line brake hydraulics

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AllanW
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Joined: Sun Aug 09, 2020 12:36 pm

MGB single line v dual line brake hydraulics

Post by AllanW »

Hi all.

My donor car (1966) has the original single line braking system. I want to take advantage of anything I can do to improve safety/reliability when I build my Hawk so I was investigating the dual line system. I’ve read that it actually uses a single reservoir so loss of pressure in one line leads to loss of pressure in both, ie somewhat limited improvement. Also the upgrade requires a larger pedal box and possibly a different brake pedal on top of the obvious master cylinder and lines. Can anyone shed any more light on this? Share any experiences? I’m reticent to try anything too complicated/expensive especially if it doesn’t actually achieve much.

Thanks

Allan
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StewbieC
T289R Committee
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Location: out in the sticks, Shropshire

Re: MGB single line v dual line brake hydraulics

Post by StewbieC »

Hawks use a bespoke pedal box with dual circuit, twin master cylinders, dual reservoir and a brake bias bar. Not sure where you read that about a single reservoir. I can only think someone has improvised somewhat.
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Stu
Hawk 289, 66 Mustang Fastback with a 289 maximum smiles per mile..
AllanW
Posts: 14
Joined: Sun Aug 09, 2020 12:36 pm

Re: MGB single line v dual line brake hydraulics

Post by AllanW »

Thanks Stu - I should have looked in the Hawk manual first!
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