Servo Assisted Brakes

[donfaber]

In my 79 B conversion (3.9L), the brakes are softer when engine running, than when shut off. I've heard this could be a problem with the servo unit. Better to repair servo, or convert to a non-servo Master Cylinder?

[MGBV8]

Sounds normal to me.  Mine's a '79, I've always thought the brakes had a mushy feel. It's the power assist. My dad's '63 doesn't feel anything like that. I may disconnect the booster to see if I like it better.

[ex-tyke]

Quote:
   ".......I've always thought the brakes had a mushy feel......"
Exactly the reason that I got rid of the power assist and went to a standard manual braking system.