Hi Jim
The servo was never replaced in my BJ8, when I installed rear disc
brakes two years ago I had considered adding a proportioning valve
to the circuit. As it turned out there was no need and the braking
is fantastic. Since I'm not racing I did not install a "two" circuit
master brake cylinder set up. The system as installed is super.
There is a write up on www.vintage-sportscar-touring.ca/technical/reardisc.htlm
for those interested.
Kind regards
Ed
Saskatoon, Saskatchewan
'65 BJ8 '89 Morgan 4/4
(single circuit, four disc brakes)
rjhco wrote:
> Jackson:
>
> Non servo assisted brakes are an option for Healeys. If you are planning to
> change over to four wheel disks from rear drums and at the same time
> eliminate the servo, you must prepare a hydraulic design plan in order to
> correctly size the brake master cylinder. Other options include changing to
> a tandem brake circuit system or a dual brake circuit system. In either of
> those cases you could pair your brakes front to back or diagonally corner to
> corner.
>
> You must know the size of your brake caliper pistons, new vs. old and if
> converting to two circuits, front vs. rear. With two circuits, you will
> also need both a bias bar and a proportioning valve in the system.
>
> Best regards,
> Jim Hockert
> BJ8 Rallye
> Dual circuit, four wheel disk brakes
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