Quote:

I guess ALL the manufacturers are wrong.
Why have a proportioning valve at all ?
So it evens out the pressure from the front
to the rear.
Hydraulics,
Closest to the first point of contact.






My advice to you is to do some research before you speak. The only one wrong here is you. The M/C is designed to build pressure to the rear brakes before it can build pressure to the front, at least on a dual reservior setup.

Show ONE factory Mopar all drum setup that uses a proportioning valve.

As for disc/drum combos the factory combination valve does more than just proportion. Disc and drum setup have different operating characteristics and the factory combination valve is an attempt to harmonize the two.

Sometimes it works, other times (A bodies) it doesn't work so well.

All disc setups shouldn't need proportioning valves but sometimes the system is not optimal, think parts sharing across platforms.


They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.