Confusing master cylinder ports... - 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
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 12-06-2003, 09:16 PM
Registered User
 
Join Date: Feb 2003
Location: California
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question Confusing master cylinder ports...

Really confused on master cylinder ports...

I converted my vehicle from stock dual circuit all drums to dual circuit discs+drums. (just put discs on front and now replacing the master cylinder)

The original master cylinder had the frontmost port connected to the rear wheels.
The rearmost port of the master cylinder, obviously to front wheels.
Both ports same thread, pipes same size.

The new master cylinder intended for discs+drums has the rearmost thread larger (for larger pipe) and went to the rear drums on the donor vehicle.
Other cars with disc+drums , ports are reversed !

What is the rearmost port intended to be for > Front or rear ?

What is the largest pipe intended for > discs or drums ? I have read conflicting information about this !
Or depends on the design?

Thanks,
Miguel

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-07-2003, 11:34 PM
Registered User
 
Join Date: Dec 2003
Location: Rancho Cucamoga, Ca.
Age: 70
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
to be able to correctly answer your question i need to know the type and age/year of your new master cylinder.
as general rule though the larger diameter tube will almost always go to the front calipers as they have larger pistons and require more fluid to move them.
hope this will be of some help.

old rodder 60
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-08-2003, 08:18 PM
Registered User
 
Join Date: Feb 2003
Location: California
Posts: 13
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Hello old rodder60 and thanks for the reply.

The new master cylinder is a DelcoMoraine dual circuit disc+drums from a 1969 Cadillac ElDorado .
That car has the larger pipe to rear drum brakes.
The opposite; disc brakes use less fluid to brake because the travel is minimal. But the reservoir better be larger to fill the larger caliper volume as pads wear out.
The pipe diameter only changes the fluid velocity... and maybe prevents swapping them if have different size threads.
Learning, learning, getting there...
What I still need to find out is WHY some vehicles use the front port for rear brakes and some other vehicles are reversed.

It may well be it is irrelevant.

Miguel
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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



All times are GMT -6. The time now is 08:33 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.