Prop Valve Location

[ermarccio]

I'm going with Wilwood's front & rear disc brake conversion and master cylinder. Should the proportioning valve go before or after the distribution block/safety switch? I like Wilwood's master cylinder with the prop valve attached. However, my concern is that having the prop valve before the distribution block/safety switch will affect the front/rear brake pressure and will trigger the safety switch...and thus my dashboard warning light which I'd like to avoid. Where do you guys place your prop valves?

Thanks,
Eric

 

[nm9stheham]

They normally get installed as you describe, after the switch, and for the reasons you state. There is nothing mandatory in running the d-block and switch however; bazillions of cars were built and driven without any such switch. It is just an warning indicator that one half of the system has a leak; it does nothing in the actual brake operation.

 

[69_340_GTS]

You won't even need the prop valve with 4-wheel disks. At least I didn't.