I am encountering a strange problem with the brakes on my 69 spider. This car originally came with an ATE double master cylinder and 2 bonaldi in line boosters. Some time ago, I had this changed to a bonaldi single master (because the ATE was out of production). I also got a new in line bonaldi booster, and bypassed the brake proportioning valve in the back. All the calipers are either new or rebuilt. all the brake pads are newish.
The problem is this: The brake pedal travels almost 3 inches before I get any brake action at all. after that everything is normal: good feel, good power, no sponginess etc. I spoke to a knowledgeable mechanic who told me the return spring in the brake master was probably wearing out, so I swapped it out for a new one and bled the brakes. I still have exactly the same problem.
Is this a characteristic of Bonaldi MCs? Is it an interation between the MC and the inline booster? any other ideas?
Help is sincerely appreciated?
The problem is this: The brake pedal travels almost 3 inches before I get any brake action at all. after that everything is normal: good feel, good power, no sponginess etc. I spoke to a knowledgeable mechanic who told me the return spring in the brake master was probably wearing out, so I swapped it out for a new one and bled the brakes. I still have exactly the same problem.
Is this a characteristic of Bonaldi MCs? Is it an interation between the MC and the inline booster? any other ideas?
Help is sincerely appreciated?