brake booster - MustangForums.com


Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search


Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

brake booster

Reply
 
 
 
 
Thread Tools Search this Thread
Old 08-03-2014, 01:59 PM   #1
MonsterBilly
4th Gear Member
 
MonsterBilly's Avatar
 
Join Date: Aug 2008
Vehicle: 66 coupe
Location: Goodyear, AZ
Posts: 1,494
Default brake booster

I have a cobra discuss conversion and although the stops well, it takes a lot of pedal pressure. I am thinking about adding a booster to it to help. I am running a cobra master cylinder as well. The problem is, I have a hydraulic clutch.
I don't know if I have room for a booster. Does anyone out there run power brakes with a hydro clutch set up
MonsterBilly is offline   Reply With Quote
Old 08-03-2014, 09:19 PM   #2
67mustang302
6th Gear Member
 
Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,451
Default

What are the caliper piston and m/c piston sizes? What are the disc conversion parts off of?
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
67mustang302 is offline   Reply With Quote
Old 08-03-2014, 10:13 PM   #3
barnett468
4th Gear Member
 
Join Date: Nov 2013
Vehicle: 1965 shelby
Location: arizona
Posts: 1,159
Default

hello;

you can run better brake pads if yours are not high perf. you can also install a master with a smaller piston diameter but this will slightly increase the distance your pedal must travel before it stops.
.
barnett468 is offline   Reply With Quote
Old 08-03-2014, 10:16 PM   #4
MonsterBilly
4th Gear Member
 
MonsterBilly's Avatar
 
Join Date: Aug 2008
Vehicle: 66 coupe
Location: Goodyear, AZ
Posts: 1,494
Default

I'm not sure of the caliper piston size, they are 2004 mustang cobra calipers. The master cylinder is a 1in. Bore.

I do have a set of upgraded Po ads I am going to try and install.
MonsterBilly is offline   Reply With Quote
Old 08-03-2014, 10:54 PM   #5
barnett468
4th Gear Member
 
Join Date: Nov 2013
Vehicle: 1965 shelby
Location: arizona
Posts: 1,159
Default

Quote:
Originally Posted by MonsterBilly View Post
I'm not sure of the caliper piston size, they are 2004 mustang cobra calipers. The master cylinder is a 1in. Bore.

I do have a set of upgraded Po ads I am going to try and install.
hello;

if you can stand a bit more pedal travel you can run a 15/16 or even a 7/8 master.

what pads are you using?

what are the new pads?

what is your driving style?
.

Last edited by barnett468; 08-03-2014 at 10:59 PM.
barnett468 is offline   Reply With Quote
Old 08-04-2014, 08:21 AM   #6
MonsterBilly
4th Gear Member
 
MonsterBilly's Avatar
 
Join Date: Aug 2008
Vehicle: 66 coupe
Location: Goodyear, AZ
Posts: 1,494
Default

Wouldn't a smaller bore cylinder require even more pedal pressure.
MonsterBilly is offline   Reply With Quote
Old 08-04-2014, 01:14 PM   #7
67mustang302
6th Gear Member
 
Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,451
Default

No, a smaller bore will produce more pressure but move less fluid, so you have to push the pedal farther.

Part of your problem may be that the brakes were designed to run on a boosted system. If the caliper piston bores are small, then you'll need more pressure to make them work. Depending on the brake system design, you may need 1,000-2,000psi. Mechanical systems typically run in the region of 1,000-1,200psi under operation. If you have a system that needs upwards of 1,500-2,000psi to work, you'll probably need a booster.

If you have plenty of room for additional pedal travel, you could try dropping down to a 7/8" bore m/c.
__________________
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
67mustang302 is offline   Reply With Quote

 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Real mods on their way squishbang The New S550 2015 Mustang 5 08-29-2015 09:52 AM
2014 Sterling Gray Track Pack GT spectreman Mustangs For Sale 2 08-28-2015 08:13 AM
New member from Cali Tyoung68 New Member Area 7 08-25-2015 04:31 AM
2002 Mustang GT Premium 5 Speed JonnyBlazeGT Mustangs For Sale 0 08-24-2015 05:21 PM
DBA Dealer and Stockist Locator – Where to buy dba Brakes General Tech 0 08-23-2015 08:16 PM

 
Advertising
Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 12:05 PM.>

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup