Brake line size

[Justin]

Any reason I can't use 3/16th brake line from the M/C to the prop valve for both front and rear? Tried 5/16 for one of the circuits so that I wouldn't have to use an adapter, but am having problems with it kinking badly.

[RJLougee]

You can run 3/16, that's all I run for my entire brake system. And unless you've replaced it, the thing on the frame is not a prop valve, just a brake imbalance warning switch.
Joe

[Justin]

Thanks! I dropped in a factory prop valve from a '76.