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Proportioning valve for disk conversion ?

Printed From: TheAMCForum.com
Category: The Garage
Forum Name: Suspension, Steering, Brakes & Wheels
Forum Description: What makes it stop, turn, and smooths the ride
URL: https://theamcforum.com/forum/forum_posts.asp?TID=99002
Printed Date: Mar/29/2024 at 7:31am
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Topic: Proportioning valve for disk conversion ?
Posted By: STANIMAL
Subject: Proportioning valve for disk conversion ?
Date Posted: Mar/14/2019 at 7:41pm
I converted my 73 hornet to disks with the Scarebird parts and updated the master . The front right seems to lock up with relative ease and then the left . 

 Is there a metering valve or proportioning valve that needs to be replaced or installed ? Did I miss something ? 



Replies:
Posted By: mixed up
Date Posted: Mar/14/2019 at 10:00pm
you can always buy a adjustable proportioning valve from summit  

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69 amx 290 auto
65 220 290 4spd
80 ford fairmont


Posted By: nickleone
Date Posted: Mar/14/2019 at 10:29pm
Proportioning valves will not cure that front lockup.
Check the calipers to see if they are backing off when the pedal is released.
Did you get a DISC/Drum new master?
If it is not a DISC/DRUM master look for a residual pressure valve in the master for the front brakes, Remove the residual pressure valve to the front brakes.
Also check push rod length it may be keeping pressure on the front brakes if it is too long.

Nick



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nick
401 71 Gremlin pro rally car sold
390 V8 SX/4 pro rally car sold
1962 Classic SW T5 4 wheel disc brakes


Posted By: tomj
Date Posted: Mar/15/2019 at 10:08pm
one side (left or right) locking up or braking unevenly also is not a proportioning thing, it's a brake problem.

is it driveable reasonably safely? does one caliper get hot and the other not?

jacked up, does each wheel spin freely, just a tiny bit of scuff?

look for shiny metal where it don't belong...

proportioning front/rear is solely for the case where the rears lock up before the front. it's more easily and simply adjusted by putting smaller bore wheel cylinders in the rear. 



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1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5
http://www.ramblerLore.com




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