[DeTomaso] Wilwood Brakes WTF????

[Garth Rodericks]

Precisely!  The pads only back off from contact as pressure is released; they don't retract all the way back into the caliper. And that's why you add brake fluid to your master cylinder reservoir as your brakes wear. And also why you need to remove some brake fluid from your master cylinder when installing new brake pads.


--- Original Message ---
Nothing. There's no mechanism actively retracting the pistons and that's
why the valves are not needed. The only retraction you should see is
rotor kickback and the flex of the piston seals. If you have excess
kickback that's a problem in itself, nothing you "fix" by adding pad
preload with valves.