The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1947 - 1959 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-16-2018, 03:07 PM   #1
idbeast
Senior Member
 
Join Date: Oct 2016
Location: Olympia, WA
Posts: 520
Question on rear Disc brakes

Question on rear Disc brakes, are you running 3/16" line all the way back from the master cylinder/ proportioning valve, or are you running 1/4" from the master cylinder/ proportioning valve back to the rear shock cross member and teeing to 3/16" lines.
idbeast is offline   Reply With Quote
Old 05-16-2018, 06:00 PM   #2
1project2many
Registered User
 
Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,149
Re: Question on rear Disc brakes

The size of the tubing should be based on the volume of fluid needed for the caliper. If the calipers are single piston you can often get away with 3/16" all the way back. For multiple piston calipers it's more important to use larger line.
1project2many is offline   Reply With Quote
Old 05-16-2018, 06:24 PM   #3
PDW HOTRODS
Registered User
 
PDW HOTRODS's Avatar
 
Join Date: Nov 2006
Location: Sutherlin Oregon
Posts: 493
Re: Question on rear Disc brakes

It wouldn't hurt hurt to go 1/4. If it's a little bigger than you need, not a problem. The rubber lines from the axle to the calipers will be the size needed for the calipers and will restrict any extra.
PDW HOTRODS is offline   Reply With Quote
Old 05-16-2018, 09:48 PM   #4
1project2many
Registered User
 
Join Date: Mar 2012
Location: Lakes Region NH
Posts: 3,149
Re: Question on rear Disc brakes

Also, if you install 1/4" line now you're covered if for some reason you decide to go with larger brakes later.
1project2many is offline   Reply With Quote
Old 05-16-2018, 11:40 PM   #5
idbeast
Senior Member
 
Join Date: Oct 2016
Location: Olympia, WA
Posts: 520
Re: Question on rear Disc brakes

I'm using the Single piston rear calipers from the 79-85 Eldorado, Toronado, Riviera.
idbeast is offline   Reply With Quote
Old 05-18-2018, 12:13 PM   #6
_Ogre
Registered User
 
_Ogre's Avatar
 
Join Date: Jan 2012
Location: Motown
Posts: 7,660
Re: Question on rear Disc brakes

my whole system is plumbed in 3/16" as recommended by inline tube for 4 wheel discs
__________________
cool, an ogre smiley Ogre's 58 Truk build

how to put your truck year and build thread into your signature
shop air compressor timer
_Ogre is offline   Reply With Quote
Old 05-18-2018, 08:02 PM   #7
mr48chev
Registered User
 
mr48chev's Avatar
 
Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,245
Re: Question on rear Disc brakes

Best bet would be to figure out what the size of the brake lines to the rear of the Cad the calipers were intended for are and go from there.
__________________
Founding member of the too many projects, too little time and money club.

My ongoing truck projects:
48 Chev 3100 that will run a 292 Six.
71 GMC 2500 that is getting a Cad 500 transplant.
77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.
mr48chev is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 01:51 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com