Long brake pedal travel , possible fix?

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mkcustoms881

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Been reading about brakes all over the internet and being a owner of a 1998 z71 with the drum brakes I’m curious to see if anyone has tried this piece here are the details fro wilwood
Wilwood two pound and ten pound residual pressure valves retain a minimum brake line pressure to help eliminate excessive pedal travel in both disc and drum brake systems. The two pound valve is used in disc brake applications where the master cylinder is mounted below the horizontal plane of the calipers and fluid drain back occurs from gravity and vibration, thereby causing excessive caliper piston retraction and a longer brake pedal stroke. The minimal two pound residual pressure prevents fluid from flowing back without causing the brakes to drag. With drum brakes, a ten pound valve is used to compensate for return spring tension and maintain wheel cylinder sealing in the drums. Residual Pressure Valves are made from billet aluminum and color coded for easy identification. Valves with fittings are supplied with two 1/8-27 NPT to 3/-24 inverted flare female fittings that will fit most domestic 3/16th hard brake lines.
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Schurkey

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Far as I know, GM quit using residual pressure valves in...'71. If your brake system was working properly, you wouldn't need to blow money on aftermarket pressure valves.

You've almost certainly got an actual problem that needs to be fixed. Air in the ABS, faulty master cylinder, sticky caliper pistons, etc. Leading/Trailing shoe drum brakes are INFAMOUS for being way out of adjustment.

Start there.
 

Frank Enstein

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RPV's aren't needed if the brake fluid reservoir is above the calipers/wheel cylinders.

Make sure the calipers slide smoothly on the mounting pins. If you can't side them with one finger it's wrong.

Also make sure the shoes haven't cut a groove in the mounting pad of the backing plate.

Make sure the rear brakes are properly adjusted.
 
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