The master cylinder is constructed with rubber seals which in time can go bad and allow the brake fluid to bypass internally or leak out from the rear of the master. When the brake master goes bad the brake pedal will sink and the brake warning light will come on. This condition will greatly decrease the...
The unit is designed for machining of external and internal cylinder and conical surfaces, cutting of both metric and inch threads, drilling and boring, surface or groove milling, and other mechanical machining.
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The PERRIN Master Cylinder Brace eliminates the flex at the firewall, so you feel nothing but solid pedal feedback with every application of the brakes. Even slowing for a stop sign, the difference can immediately be felt after installation of the PERRIN Master Cylinder Brace. CONSTRUCTION
Stainless lines, fresh rotors and pads, 4040 prop valve, and brake cylinder brace. When looking into what was available for the brace, the main option This video shows how much the MC moves without the brace. ~ 1/16"-1/8" of firewall flex.
This brace eliminates firewall flex. It supports the end of the master cylinder and is braced from the stiff upper shock mounts. Under braking the firewall will flex allowing the booster and master cylinder to move. This flex makes modulation under hard braking difficult and inconstant pedal feel.
The master cylinder is the component that generates all of the pressure for the braking system, and if it develops any sort of problems sealing or distributing pressure, this may be felt in the pedal. Over time, with constant use, the seals inside of the cylinder can wear out and form internal leaks.