Hello Gavin - What you need to do is install a dual master cylinder that
matches the bore size of the front/rear brake segments to your particular
application. Then put the proportioning in the rear segment which will
allow you to adjust the rears only. In my car, I have the same M/C bore
size front and rear. Thus my f/r disc brakes require the same pressure and
by using a valve I can reduce the rear brakes by 40%. I might suggest you
speak with a professional supplier such as TrueChoice Motorsports In
Columbus, Ohio, they generally have someone available to answer your
questions.
>From: Gavin Ivory <G_Ivory@beutel-can.com>
>Reply-To: Gavin Ivory <G_Ivory@beutel-can.com>
>To: "'vintage race list'" <vintage-race@autox.team.net>
>Subject: beginners tech question
>Date: Fri, 7 May 1999 15:49:15 -0400
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>I think my front disc brakes [new and upgraded] are locking-up way before
>I'm getting full stopping power from my rear drums [shoes, cylinders in
>good
>shape, with no air]. I'd like to install a brake prop valve, which I
>understand gets spliced into the rear brake lines. Question is: Am I right
>in thinking that the prop valve can only decrease the pressure to the rear
>brakes, and if so, where do I install it if I want more fluid flowing to
>the
>rear brakes. Put it on the front brake lines??
>Thanks for the help,
>
>Gavin Ivory [...still pining to get into vintage race ... but in the
>meantime, learning all I can, under the car and at Mosport/Shannonville
>driving schools]
>
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