Quote:
Originally Posted by V8 Bob
Some additional info and "corrections"....
The rear (primary) port plumbed to the fronts may be correct for your master but that's not a rule. If obvious, always plumb the larger fluid reservoir to the fronts, whether primary or secondary.
The pictured valve in post #10 sure looks like a typical factory distribution/pressure differential/proportioning combination valve,
but I would not use it or any fixed value combo valve on a custom non-stock system. You want to use the adjustable proportioning valve to ensure maximum rear braking without any early rear slide before the fronts.
What could be dangerous is relying on a production brake valve designed for a particular vehicle's brake system and dynamics.
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Agree fully with last statement...
The valve shown is a stand alone PRESSURE DIFFERENTIAL VALVE. It has no affect on balanced braking.
A COMBINATION VALVE has a Front Metering Valve - Pressure Differential Valve - Proportioning Valve - and possibly a Pressure Residual Valve in one assembly.
FORD did not go to a COMBINATION VALVE until the early seventies.
This system (K-H) had the different valving as stand alones, i.e. Metering Valve - Pressure Differential Valve - Proportioning Valve. The 1967 Dual Reservoir MC (power or manual) is unique to this design and has proper sizing/fluid capacity.
You begin to experiment with MC piston size/ travel only on a more complicated change-over and you need gauges for that.
Proper push-rod adjustment will be found in the 1967 SERVICE MANUAL.
The use of an adjustable proportioning valve will get someone in trouble very quickly. No further need to explain that one.
All of this original valving (K-H) is still available but costly. Most of these brake-swap vendors should not be in business as they are giving false information to make the kits affordable. The kit does not contain proper valving or refer the purchaser as to the need for proper valving.
This system was unique in it's day and the performance was great. It is the proper retrofit (IMO) for any early FORD of the period.
FORD dropped it due to cost.
This is for the info of the OP only. I do not participate in food fights...