5 Guests, 0 Users

« previous next »
Pages: [1]   Go Down

Author Topic: 1976 pinto rear disc problem  (Read 1102 times)

0 Members and 1 Guest are viewing this topic.

Offline pegasus2050

  • Pinto Member
  • **
  • Posts: 23
  • FeedBack: +0/-0
  • Gender: Male

    • Total Badges: 4
    Badges: (View All)
    Topic Starter Windows User Tenth year Anniversary Fifth year Anniversary
1976 pinto rear disc problem
« on: June 02, 2016, 07:17:16 PM »
recently installed rear disc brake on my pro street pinto. disc brake setup consists of 1982 chevy calipers and after market mounting brackets. problem I am having is that I can't get a good firm brake pedal. if you pump the brake pedal you get a firm pedal otherwise the pedal will go to the floor.when I had the drum brakes on the car I always had a good firm pedal. by the way this is not a power brake setup. any suggestions. have changed the brake master cylinder and bled the entire brake system and still have the same results. front brakes is the same setup 1982 chevy calipers and 9 inch rotors.
Logged

Offline 82expghost

  • Pinto Full Member
  • ***
  • Posts: 154
  • FeedBack: +84/-0
  • Die tires die!

    • Total Badges: 5
    Badges: (View All)
    Topic Starter Signature Fifth year Anniversary Mobile User Windows User
Re: 1976 pinto rear disc problem
« Reply #1 on: June 03, 2016, 05:19:36 AM »
I bet because of the disk brakes, the pistons in them are bigger than a wheel cylinder, so means it needs more fluid movement, so you may need a bigger bore master, or you still have air in the lines

Sent from my E6782 using Tapatalk

Logged
98 taurtus, now in heaven
82 exp, the race car, cancer took it away
77 pinto, weekend warrior
92 grand marquis, daily

Offline 74 PintoWagon

  • Pinto Sr. Master
  • ******
  • Posts: 3105
  • FeedBack: +540/-0
  • Gender: Male
  • Another Pinto Driver

    • Total Badges: 5
    Badges: (View All)
    Topic Starter Signature Poll Voter Windows User 1000 Posts
Re: 1976 pinto rear disc problem
« Reply #2 on: June 03, 2016, 07:28:59 AM »
How about the proportioning valve???.
Logged
Art
65 Falcon 2DR 200 IL6 with C4.

Offline pegasus2050

  • Pinto Member
  • **
  • Posts: 23
  • FeedBack: +0/-0
  • Gender: Male

    • Total Badges: 4
    Badges: (View All)
    Topic Starter Windows User Tenth year Anniversary Fifth year Anniversary
Re: 1976 pinto rear disc problem
« Reply #3 on: June 03, 2016, 09:19:12 PM »
found some information on cme web site last night I have decided to install a brake master cylinder for a 1979 corvette which came with four wheel disc brakes. found out that this type master cylinder has different type valves inside than a disc/drum brake master cylinder. going to change master cylinder Saturday will let you know how it works out.
Logged

Offline 82expghost

  • Pinto Full Member
  • ***
  • Posts: 154
  • FeedBack: +84/-0
  • Die tires die!

    • Total Badges: 5
    Badges: (View All)
    Topic Starter Signature Fifth year Anniversary Mobile User Windows User
Re: 1976 pinto rear disc problem
« Reply #4 on: June 03, 2016, 11:38:27 PM »
Take pics of any modifications

Sent from my E6782 using Tapatalk

Logged
98 taurtus, now in heaven
82 exp, the race car, cancer took it away
77 pinto, weekend warrior
92 grand marquis, daily

Offline russosborne

  • Pinto Master
  • *****
  • Posts: 2405
  • FeedBack: +47/-1
  • Gender: Male
  • Another Pinto Driver

    • Total Badges: 5
    Badges: (View All)
    Poll Voter Mobile User Topic Starter Signature 1000 Posts
Re: 1976 pinto rear disc problem
« Reply #5 on: June 04, 2016, 03:40:20 PM »
and don't forget to bench bleed the master cylinder before putting it on the car. that is a big known issue with your symptoms.
Russ
Logged
In Glendale, Arizona

RIP Casey, Mallory, Abby, and Sadie. We miss you.

79 Pinto ESS fully caged fun car. In progress. 8inch 4.10 gears. 351C and a T5 waiting to go in.
Pages: [1]   Go Up
« previous next »