<VV> Brake Upgrade to 63 Monza, (Vairforce One)

[Jim Davis]

Your RPV explanations are backwards, drums require 10 psi residual 
pressure valves and disk require 2 psi RPV.  The springs to pull the 
shoes back from the drums are much larger than those "O" rings that pull 
the pads back from the rotors.  Unless the MC is below the wheel 
cylinders or calipers RPV are not needed.
Jim Davis



On 11/14/2014 2:13 PM, Jay Maechtlen via VirtualVairs wrote:
> See if (or what) valves are in each port. They might not be the same.
> Most dual masters are for drum/disk systems, so one side may have a 
> residual pressure valve or something.
> And the side for disks might have depended on external valving.
>
> IIRC, drums want a little residual pressure - I don't think disks need 
> it.
> (my car has disk/drum fed from the original '61 m/c, works ok.)
>
> what was the bore size of the master cylinder you bought, and what was 
> it officially supposed to fit?
> regards
> Jay
>
>
> On 11/14/2014 9:17 AM, mvjacobi--- via VirtualVairs wrote:
>> Hi VV
>>    I'm in the process of Redoing lthe brakes on my 63 Monza. I have 
>> wanted to change the master cylinder (mc) to dual chamber for safety 
>> sake.  I Have a flaps dual type master cylinder that bolted right in. 
>> But I'm not sure which of the two ports serves the front and rear 
>> brakes.
>>    So the Questions,. Of two ports in the (mc),  which services front 
>> and which rear brakes?  Does the rear port get the line to the rear 
>> brakes?  The world wonders.
>>
>> Since the next stop is the paint shop I am more than ever dedicated 
>> to avoiding bending the car on some future cruise due to failed brakes.
>>    Thanks for the advice
>>    Mike
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