GM Disc/Drum Proportioning Valve for 1/2-20, 9/16-18 Outlets
Universal Fit, Disc/Drum Brake System Type, Fixed Proportioning Valve Type, Brass, Natural
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These proportioning valves are similar to what GM used on many cars in the 70s. They are non-adjustable and may require an adjustable valve in the rear brakes (if needed). Block incorporates metering (for front brakes) and proportioning (for rear brakes) into one unit. For use with front disc, rear drum brake systems.
Includes hard lines to connect to a master cylinder with 1/2"-20 and 9/16"-18 outlets.
For M/C with 1/2"-20 and 9/16"-18 outlets.
NotesBottom Front Port: 3/8"-24 IFF threads - goes to one front brake
Top Front Port: 3/8"-24 IFF threads - goes to one front brake
Middle Top Port: 1/2"-20 IFF threads - comes from master cylinder
Rear Top Port: 7/16"-24 IFF threads - comes from the master cylinder
Rear Most Port: 9/16"-18 IFF threads - goes to rear brakes
Outlet FittingBottom front/Top front are 3/8"-24 IFF (to font brakes), Rearmost port is 9/16"-18 IFF (to rear brakes).
NotesIncludes hard lines with fittings, hardware, and bracket. This is a combo valve (metering for front/proportioning for rear) into one valve. Residual valves NOT built in.
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Q & A
After getting the control arms and drop spindles installed last time, we are dying to see what it looks like on the ground. Today we are working with the Speedway Deluxe Disc Brake Kit. Josh and Joe are on a roll!
Tim demonstrates the brake assembly with a Wide 5 drum brake and Speedway's new self-energizing backing plate.
Tim explains the process of adjusting Buick Finned Drums to fit Speedway's self-energizing backing plate assembly.