Re: Dual Master Cylinder Proportioning Valve

[Max Wedge Gene <elukow@xxxxxxxxxxxxx>]

That is correct, the block is a distribution block and a valve that senses
pressure from both the front & rear portions of the master cylinder. As long
as both are working the check valve remains in the center position and a
Brake Failure light will be Off. If there is a loss of pressure in either
the front or the  rear system then the check valve moves out of the center
position and the the Brake Failure light is On. All you need to do is add an
idiot light on the dash and contact the other side to 12  volts . The master
cylinder you use would be one for drums front & rear if there are no changes
to the original brake system. If you change the front to disc brakes then
use a different master cylinder and a proportioning valve because the disc
brakes require a different amount of fluid and line pressure to react at a
similiar rate to the rear drums. The proportioning valve allows a bmore
uniform apply rate of the disc front brakes & the drum rear brakes.

But as the article in the Mopar Action states the valve isn't really needed.
Just something to add to make it look original, even thought the 65 and
earlier cars did not have a dual master cylinder. Just an enhanced safety
feature.

Max Wedge Gene ----- Original Message -----
From: <v8magic@xxxxxxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Wednesday, March 24, 2004 3:11 PM
Subject: RE: Dual Master Cylinder Proportioning Valve


> There seems to be some confusion concerning the distribution blocks. I've
> seen several posts that refer to it as the "proportioning valve". The only
> function of that big old block is to enable splitting the distribution to
> all four wheels and in later systems, to create some additional safety in
> the system by keeping the front brakes hydraulically separate from the
rear
> brakes.
>
> Richard Ehrenberg had an excellent article in the April 2004 issue of
MOPAR
> Action that covered elimination of the distribution block. I urge everyone
> to give that article a nice long read.
>
> I hope that helps.
>
> Bob
>
>
> > [Original Message]
> > From: Westerlund, Ken <kwesterlund@xxxxxxxxxx>
> > To: <1962to1965mopars@xxxxxxxxxx>
> > Date: 3/24/2004 11:39:24 AM
> > Subject: RE: Dual Master Cylinder Proportioning Valve
> >
> > Something doesn't sound right here.
> > If you are using disc brakes you should use a MC for disc brakes.  If
> > you are not using disc brakes you don't need a proportioning valve.
> > ...but using a MC for non-disc with a purporting valve?
> > Regards,
> > Ken
> >
> > -----Original Message-----
> > From: MAF [mailto:aniawi@xxxxxxxxxxxxxx]
> > Sent: Tuesday, March 23, 2004 9:14 PM
> > To: 1962to1965mopars@xxxxxxxxxx
> > Subject: Re: Dual Master Cylinder Proportioning Valve
> >
> > I used A dual MC from NAPA for a '70 Dodge B body non-disc, Propvalve
> > and
> > long brake line from a '68 belvedere. Short line was from same and a
> > little
> > tricky to bend. Mounted the prop valve in same location as old one.
> > Mike '64 Dodge
> >
> > ----
> > Please address private mail -- mail of interest to only one person --
> > directly to that person.  I.e., send parts/car transactions and
> > negotiations as well as other personal messages only to the intended
> > recipient, not to the Clubhouse public address. This practice will
> > protect your privacy, reduce the total volume of mail and fine tune the
> > content signal to Mopar topic.  Thanks!
> >
> > ----
> > Please address private mail -- mail of interest to only one person --
> directly to that person.  I.e., send parts/car transactions and
> negotiations as well as other personal messages only to the intended
> recipient, not to the Clubhouse public address. This practice will protect
> your privacy, reduce the total volume of mail and fine tune the content
> signal to Mopar topic.  Thanks!
> >
> > '62 to '65 Mopar Clubhouse Discussion Guidelines:
> > http://www.1962to1965mopar.ornocar.org/mletiq.html.
> >
> >
>
> ----
> Please address private mail -- mail of interest to only one person --
directly to that person.  I.e., send parts/car transactions and negotiations
as well as other personal messages only to the intended recipient, not to
the Clubhouse public address. This practice will protect your privacy,
reduce the total volume of mail and fine tune the content signal to Mopar
topic.  Thanks!
>
> '62 to '65 Mopar Clubhouse Discussion Guidelines:
> http://www.1962to1965mopar.ornocar.org/mletiq.html.
>
>
>


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 



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