Drum/Disc Brake Proportioning Valve Help - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 03-21-2010, 10:05 PM
Last photo:
Join Date: Nov 2004
Location: chicago area
Age: 54
Posts: 922
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Drum/Disc Brake Proportioning Valve Help

I've just converted the front brakes on my 72 chevy from drum to disc. Now I have to do the master cylinder and proportioning valve. The proportioning valve I have is the correct one, but the ports line up differently from the old valve, so the lines have to be modified. What is the best way to do this? Do I have to cut the existing steel lines and make a splice? I do not want to replace all the brake lines in the car, I just have to redo the bends at the master cylinder. I have a tubing bender and a flaring tool if needed.

See photos below. Suggestions and comments please

the first 2 photos are my existing setup. the last photo is the new prop valve which is a different layout from the existing - therefore the lines have to be cut/refitted etc.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 03-22-2010, 08:03 AM
302 Z28's Avatar  
Last photo:
Join Date: May 2003
Location: North Texas
Posts: 10,940
Wiki Edits: 0

Thanks: 1
Thanked 119 Times in 100 Posts
You did say you replaced the master cylinder with one designed for disc/drum didn't you? Whatever you do I would not cut and splice the lines. You should be able to get the correct lines from a repro shop, or cut, bend and flre new ones to fit.

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-22-2010, 09:59 AM
cobalt327's Avatar
Last wiki edit: Intake manifold
Last journal entry: 1980 Malibu Wagon
Last photo:
Join Date: Mar 2009
Posts: 5,031
Wiki Edits: 1616

Thanks: 128
Thanked 616 Times in 565 Posts
It looks close enough that you should- w/just some relatively minor tweaking- be able to use the existing lines w/o cutting. Is there something I'm missing?
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
brake proportional valve bezinque Suspension - Brakes - Steering 9 04-08-2007 09:18 PM
GM fast burn heads batman09 Engine 1 10-26-2004 09:32 AM
proportioning valve question A/G WILLYS Suspension - Brakes - Steering 1 10-10-2004 07:38 AM
Wheel clunking and brake squeal skizot Suspension - Brakes - Steering 29 10-09-2004 06:17 AM
Brake combination valve "Hook-up" HELP 39chevy Suspension - Brakes - Steering 1 09-14-2004 07:59 PM

All times are GMT -6. The time now is 11:21 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.