38mm Piston Rear brake Caliper install

Discussion in 'Workshop Forum' started by Rupunzell, Oct 29, 2016.

  1. Mark


    Can’t remember where I first read about these, but it worked for me. If I recall correctly, they make one for discs and one for drums. That’s about as much research I put into it before trying it.

  2. Dr.Jeff

    Dr.Jeff True Classic

    Sin City
    Residual pressure valves are intended for rear drum brakes (with wheel cylinders) rather than disk brakes with calipers. I think you will find the pads will overheat or wear excessively (or greater issues) when putting them on disk brakes. Just my opinion.
  3. kmead

    kmead Old enough to know better

    They are for both, the 10lb version is for use with rear drums to balance the springs used in drums. The 2lb version is intended for disc based systems to keep the pistons from retracting fully.

    I wouldn’t suggest using them unless you had a problem, which there clearly has been for a few folks that have gone to 38mm rear calipers.

    Dr.Jeff likes this.

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