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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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Brake Problem

  • Thread starter Thread starter Bob Fano
  • Start date Start date Dec 31, 2013
B

Bob Fano

New Member
Dec 31, 2013
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Dec 31, 2013
#1
  • Dec 31, 2013
  • #1
I have a 69 mustang that I just installed 69 Disc Brakes on the front. I have an 89/5.0 EFI set up in the car and used a master cylinder and brake booster from the 89 Mustang. While it had drum brakes, everything worked great. When I just did the conversion, no matter how I bleed the system I can't get any pedal. I have installed a new master cylinder and brake booster. I have the original line block from the 69 and checked the line piping. What did I overlook?
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
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Jan 2, 2014
#2
  • Jan 2, 2014
  • #2
Welcome aboard Bob, ive moved your post to the fox tech forum where you may get some help.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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Jan 2, 2014
#3
  • Jan 2, 2014
  • #3
Define "can't get a pedal"

The pedal is soft but stops the car..or you can pump the pedal and it barely stops the car.

Do you know the specs on the front calipers. Are these the 4-piston calipers put on 60s mustangs, or something else?

Depending on piston size, it's possible the MC bore is just too small and you can't move enough fluid. You would need a larger bore MC to compensate.

Unsure if those calipers can be mounted upside down, another thing to check
 

MFE92

10 Year Member
Aug 25, 2010
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Jan 2, 2014
#4
  • Jan 2, 2014
  • #4
Mustang5L5 said:
Unsure if those calipers can be mounted upside down, another thing to check
Click to expand...

To put a finer point on this, calipers are side-specific, but they'll usually bolt on each side of the car just as easily as the other. But the position of the bleeder screws matters. It's a really common mistake when replacing calipers to put them on the wrong sides of the car so that the bleeders are too low, trapping air in the caliper above the level of the bleeders. When this happens, you will never get them to bleed properly and you'll be forever chasing a soft pedal.
 

Shakerhood

20+ Year Stangneter
Oct 28, 2004
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Jan 2, 2014
#5
  • Jan 2, 2014
  • #5
Calipers on the wrong side was the first thing that came to mind for me too.
 
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