My 1973 project daily driver

7173Mustangs.com

Help Support 7173Mustangs.com:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
I had the same problem with replacing my master cylinder. Never did find an aftermarket one that didn't come with a brake line adapter fitting.
My application was for power disc brakes. here are two part numbers that worked for me:
Cardone 131526 (might be obsolete)
Raybestos MC36445 (Rock Auto Parts)
 
As for my master cylinder it ended up having an adapter on the drum brake port.
I kept my original.
The correct one has 1/2-20 threads on port one (drum) , 7/16-24 threads.
My car has the power disc brakes and the 2” rear drum setup. The issue I ran into is no one shows the port thread sizes on the websites. Oriely’s has port sizes but only to the clerk can see them.
 

Attachments

  • D780F8FD-E93B-4E9D-823B-74F08A428D0D.jpeg
    D780F8FD-E93B-4E9D-823B-74F08A428D0D.jpeg
    4.5 MB
These MC part #s are for Power Disc Brake applications:
Cardone 131526 has 7/16" x 24 Primary Port and 1/2" x 20 Secondary Port (I believe this part is now obsolete)
Raybestos MC36445 has 7/16" x 24 Primary Port and 3/8" x 24 Secondary Port (comes with adapter)
I found these port sizes in the manufacturer links in the Rock Auto catalog.
 
New shift boot, and air box. Now only if could figure out the flapper removal.
 

Attachments

  • 210A3F42-9248-4D1D-AF80-CA4984656C16.jpeg
    210A3F42-9248-4D1D-AF80-CA4984656C16.jpeg
    2.5 MB
  • 0668BDF1-C3E9-4BD3-B9DB-181DD793C059.jpeg
    0668BDF1-C3E9-4BD3-B9DB-181DD793C059.jpeg
    3 MB
  • 3ED38BC0-1B09-48E3-8439-28D37027CEBD.jpeg
    3ED38BC0-1B09-48E3-8439-28D37027CEBD.jpeg
    2.7 MB
  • 3BA87D11-0688-47D4-8B09-CB58C1AA453D.jpeg
    3BA87D11-0688-47D4-8B09-CB58C1AA453D.jpeg
    923.9 KB
  • AE968F44-4056-4D04-93DE-414305DA1C8B.jpeg
    AE968F44-4056-4D04-93DE-414305DA1C8B.jpeg
    1.6 MB
  • IMG_2813.MOV
    8.2 MB
I don't recall removing the flapper door but it's been a long time. That said, the shaft the door pivots on should be a friction fit. If you grasp the door and twist the shaft while pulling it outward you should be able to work the shaft out and remove the two pieces. Note the position of the door and the bell crank end of the shaft for reinstallation
 
Last edited:
New upgrades. Added a 150amp 1 wire alternator (first step to reading the car!), new steering wheel, and new carburetor (replaced the street demon, could not get the hesitation out of the carb).
More to come with the new electrical.
 

Attachments

  • 28753CB7-D641-4D35-B1DD-6F64577CB95F.jpeg
    28753CB7-D641-4D35-B1DD-6F64577CB95F.jpeg
    4 MB
  • 88C7EBBC-1DBA-4348-863E-314B2FC273F2.jpeg
    88C7EBBC-1DBA-4348-863E-314B2FC273F2.jpeg
    4 MB
  • 4C02F7E7-F25E-4D79-B59A-6882492C7F90.jpeg
    4C02F7E7-F25E-4D79-B59A-6882492C7F90.jpeg
    2.3 MB
  • 7744059F-ABC7-4A84-B260-E1D966B29920.jpeg
    7744059F-ABC7-4A84-B260-E1D966B29920.jpeg
    1.9 MB
Nice options list, it should be well worth the hassle. I picked mine up 3 years ago and am finally terrorizing the neighborhood in it. This car is way too fun to drive & I will be roasting the tires today since I just "legally" tagged it last Fri. Stay the course.
 

Attachments

  • IMG_6054.JPG
    IMG_6054.JPG
    54.7 KB
  • IMG_4378.JPG
    IMG_4378.JPG
    1.2 MB
  • IMG_6058.JPG
    IMG_6058.JPG
    58.9 KB
New upgrades. Added a 150amp 1 wire alternator (first step to reading the car!), new steering wheel, and new carburetor (replaced the street demon, could not get the hesitation out of the carb).
More to come with the new electrical.
Did your new Brawler Carb smooth out the Barry Grant carb hesitation?
 
Did your new Brawler Carb smooth out the Barry Grant carb hesitation?
Yes, hesitation is gone. I tried everything with the other carb, the brawler is a 650 double pumper mechanical secondaries.
The Street demon was a 750, with mechanical secondaries.
 
Very nice looking Mustang. We have two 73 Mustangs, a Mach 1 and a Convertible. The vert was barn stored over 40 years, and has about 21,000 original miles on it - and is in near perfect preserved condition. The Mach 1 was deeply restored ($$), and is in really near-perfect condition. I did some upgrades to both Mustangs I thought you may be interested in knowing more about. But, first, I note your Mustang originally had A/C, but the compressor is missing. Both of ours were originally non-A/C cars I added Classic Air A/C kits to, and I could not be happier for having done it. Classic Air also has a division that specializes in getting oem replacement A/C parts for folks preferring to heep their original parts in place where they can. Following are both of their web links:

https://www.classicautoair.com/
https://www.originalair.com/

We had ***** light instrument panels in both cars originally. Replaced both panels with Dakota VHX analog units.

https://www.google.com/search?q=dak...i60j69i61l2.4433j0j4&sourceid=chrome&ie=UTF-8
I replaced both radiators with three row aluminum radiators, along with an aluminum shroud with dual electric fans. I have some YouTube links showing how I did that, plus how I added a Fan On LED light alert system. In the YouTube descriptions I provide parts lists and vendor links.

https://youtu.be/T5DrC2zrpIA

https://youtu.be/ErDOMJ1hOnA


I also added a Garmin Drive 72 GPS with optional backup camera unit.

I also installed a WebCam.

Of course, all that meant I had to upgrade my alternators, but you already have that covered.

And finally, I added full length ACP center console units, where I took out the center ash tray and installed a fabricated Power Panel with two 12 volt outlets, a dual USB outlet, and a digital voltmeter.

if any of the above projects we did interest you let me know and I will provide various files and links so you can see how we pulled it off. Meanwhile, here is a YouTube link to a walk-around video of the 73 Mach 1 on its last day or restoration:

https://youtu.be/_Fl0B-qmlLI

Attached are some photos of the vert.

Finally, in case you need info on the engine vacuum system routing, I have the 1973 emission control calibrations with the 351 4v calibrations missing in the shop manual inserted. That file is attached. If you need the electrical schematic (1973 is really an excellent manual) you can go to the following link for it and other manuals:

https://www.forelpublishing.com/clickbank/index.html


One other thing we did on the Mach 1 was replace its C4 auto tranny with an AOD 4 speed automatic tranny. I suspect you will keep yours as a 4 speed manual.

Have fun with it!
 
More progress, new shifter handle. Added a high torque starter with built in solenoid.
Added a relay box and a 12v+ bus bar to handle all the power connections. New optima red top battery. Put in a new dome light my was missing. Still working on the dash going to relocate the fuses to the glove box and looking at adding a tach with gauges in the instrument cluster, may work may not will keep you updated.
 

Attachments

  • 0ED0DF5B-6EE2-4BA0-80A1-C0CC397BA0DC.jpeg
    0ED0DF5B-6EE2-4BA0-80A1-C0CC397BA0DC.jpeg
    1.6 MB
  • 39294870-6610-4888-8E6D-66143E3471AE.jpeg
    39294870-6610-4888-8E6D-66143E3471AE.jpeg
    1.7 MB
  • 013C7E3D-5B19-43B5-A6AB-5FEAB4128203.jpeg
    013C7E3D-5B19-43B5-A6AB-5FEAB4128203.jpeg
    1.8 MB
  • 4110F119-C33F-4F14-B5E2-791F986AB6E9.jpeg
    4110F119-C33F-4F14-B5E2-791F986AB6E9.jpeg
    1.3 MB
  • 03974E27-2BD3-4CCE-86A0-4C9105AE5ABF.jpeg
    03974E27-2BD3-4CCE-86A0-4C9105AE5ABF.jpeg
    1.9 MB
  • 9E500552-2954-44E7-AA87-5C6FF80E0AAC.jpeg
    9E500552-2954-44E7-AA87-5C6FF80E0AAC.jpeg
    3.8 MB
  • B8AA01C2-A036-4478-A8CB-E24FE53ED891.jpeg
    B8AA01C2-A036-4478-A8CB-E24FE53ED891.jpeg
    1.8 MB
  • 9FAD0B14-D091-419C-90D9-E0FC932866B8.jpeg
    9FAD0B14-D091-419C-90D9-E0FC932866B8.jpeg
    1.4 MB
  • AEC65E62-E391-4C2E-B9F2-B6709CB2AABE.jpeg
    AEC65E62-E391-4C2E-B9F2-B6709CB2AABE.jpeg
    1.5 MB
  • 7266D617-BF52-416C-BF4E-06AA5601ECFE.jpeg
    7266D617-BF52-416C-BF4E-06AA5601ECFE.jpeg
    546 KB
My glovebox electrical panel is ready to install. The three fuse block are left to right, battery powered, lights switch powered, ignition switch powered.
The leds in center of the blocks light up if fuse is blown.
Will update ones installed .
 

Attachments

  • IMG_3529.jpeg
    IMG_3529.jpeg
    3.5 MB
  • IMG_3528.jpeg
    IMG_3528.jpeg
    3 MB
  • IMG_3527.jpeg
    IMG_3527.jpeg
    2.9 MB
Back
Top