Who has parts for Hurst Air Heart brakes and master cylinder ??

[KNUCK]

From the 80's I think the master cylinder is 5/8 cup. The front brake will not build up pressure and no air in the system. Been sitting for about 20 years. Took it apart cleaned it up and cylinder is nice, no pits. No leaks.

[RichO]

Auto parts stores will have o-rings and 5/8 cups if the piston and spring are o.k. GMA still has parts that are probably interchangeable. Even mid 70's to early 80's HD might help. Rubber parts are the biggest issue and they were pretty common from maker to maker.