Current Classifieds

Parting out 77 Bobcat Hatch
Date: 11/06/2017 04:16 pm
need 1978 pinto guage cluster
Date: 03/07/2021 07:35 am
cam pulley
Date: 05/30/2018 04:56 pm
4-14" Chrome Plated Wheels 4 x 108 + 0mm offset with new tires

Date: 09/12/2018 12:33 pm
Many Parts Listed Below
Date: 04/20/2018 11:15 am
77 Cruising wagon Rear cargo light
Date: 10/02/2017 02:16 pm
Pinto Engines and engine parts
Date: 01/24/2017 12:36 pm
Pinto Parts for sale
Date: 06/19/2017 02:01 pm
1976 Ford Pinto Wagon - just rebuilt. 302 v8

Date: 11/11/2019 03:38 pm
Wanted Postal Pinto
Date: 10/26/2020 03:24 pm
Clutch Cable Needed
Date: 04/03/2017 11:03 pm
Front and rear seats for a 1976 Pinto Sedan
Date: 05/18/2020 10:22 pm

Author Topic: 1973 pinto wagon proportoning valve  (Read 718 times)

0 Members and 1 Guest are viewing this topic.

Offline LongTimeFordMan

  • Pinto Sr. Member
  • ***
  • Posts: 419
  • FeedBack: +181/-0
  • Gender: Male
  • 1973 Red Pinto Wagon

  • Total Badges: 6
    Badges: (View All)
    Fifth year Anniversary Topic Starter Signature Windows User Linux User Mobile User
1973 pinto wagon proportoning valve
« on: March 10, 2017, 12:53:55 PM »
do the proportioning valves fail?

2.0, wagon, manual trans, front disks, rear drums, no power brake booster

The rear wheels seem to lock up way before the fronts during a hard stop..

No dented or pinched brake lines.

I think that the previous owner installed the wrong master cylinder when he did a brake job. 

from what I have seen, in all of the catalogs, the Zone, amazon and evil bay all of  the master cylinders for 72-73 cars had master cylinders that were flat in the front and round in the rear and 74 up and MII had round front types.

mine is round at the front and flat at the rear like the 74 and later..

'planning to replace the master cylinder with the correct one and bleed the brakes, so maybe that will correct the problem.


Red 1973 pinto wagon DD, SoCal desert car, Factory 4 speed, 3.40 gears, Stock engine, 14" rims and tires, 60 K original miles

Offline robertwwithee

  • Pinto Full Member
  • ***
  • Posts: 228
  • FeedBack: +4/-0
  • Another Pinto Driver

  • Total Badges: 2
    Badges: (View All)
    Mobile User Topic Starter
Re: 1973 pinto wagon proportoning valve
« Reply #1 on: March 10, 2017, 03:07:11 PM »
I've never seen one fail, maybe contaminated internal or front line pinched.  I had a front hose internally collapse but had no signs externally and it was brand new.  1970 GTX 440 4 speed restored.  I should've charged more on that one.

Sent from my SPH-L720T using Tapatalk

Offline dick1172762

  • Vintage Pinto Racer
  • PCCA Management Board
  • Pinto Sr. Master
  • ******
  • Posts: 2623
  • FeedBack: +362/-0
  • Gender: Male
  • I'm a llama!

  • Total Badges: 7
    Badges: (View All)
    Topic Starter Signature Poll Voter Windows User 1000 Posts Tenth year Anniversary Fifth year Anniversary
Re: 1973 pinto wagon proportoning valve
« Reply #2 on: March 10, 2017, 05:00:50 PM »
All Pintos I've ever seen had a 15/16" master cylinder on them. Some have the number cast on them. Some you have to look in the sale catalog. But 15/16" it is.
Its better to be a has-been, than a never was.