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Brake master cylinder

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1973gts View Drop Down
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    Posted: 04-July-2020 at 7:23AM
I ordered a master cylinder through Summit, a Dorman M80903.  Their site shows it fitting my car, 1973 Ford Gran Torino Sport with a 7 liter.  Prior to putting it on I checked Summits site and it still showed fitting my car.  However when I checked Dormans site it didn't list it as fitting, but it does show it fitting a 1973 Montego.  I even emailed Dormans help site and they stated it isn't listed as fitting the Torino.  Cross referencing with the original Ford part number shows it to be the same.  Wouldn't the Montego and Torino use the same master cylinder?  I'm thinking this is just a listing problem on Dormans site.
Dave - 1973 GTS N code
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californiajohnny View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 9:13AM
 far as i know 72-79 maybe more all the same
but manual vs power brakes will be a different master...
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Steve M. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve M. Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 9:29AM
I just went over to the O'Reilly's site. They list the same master cylinder for both the Gran Torino Sport and the Mercury Montego. I've ordered a new vacuum booster and master cylinder for my '76. 
Steve M.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve M. Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 9:32AM
I forgot,  my '76 uses the same part number as your '73. 
Steve M.
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1973gts View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1973gts Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 10:03AM
Okay, thanks everybody, must be Dorman doesn't realize Montego/Torino the same.
Dave - 1973 GTS N code
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 10:59AM
It is the same between Montego and Torino.  There are separate listings for Manual and Power brakes.  On the power brakes, there is a different part listing for 1972 compared to 1973-79.

Ford Part numbers are as follows:

1972

D2OZ 2140-A (manual brakes)
D2OZ 2140-B (power brakes)

the only difference might be the inclusion of the push rod.

1973-79

D2OZ 2140-A superseded by D4OZ 2140-A  (manual brakes)
D6AZ 2140-A (power brakes)

Doorman has two listings that I find for the '72-79 Torinos.  

M98908 cross references to  D2OZ 2140-A, D2OZ 2140-B, D9AZ 2140-A

M80903 for 1973 and newer cross references  D30Z 2140-A, D3AZ 2140-A, D6OZ 2140-A, D6AZ 2140-A

So in short, you ordered the correct one for your car.  FWIW, I used a doorman Master Cylinder on my car and so far it works fine.  This was after a Cardone bit the dust.


Vince

1972 Ford GTS Sportsroof - Survivor, One Family car

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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 11:43AM
yeah and don't rely on pics of the part either!! if you look up the delay wiper switch for our cars they all show a slider type for a square body chevy truck! it's no wonder these parts guys don't know their ass from a hole in the ground now daysOuch
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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1973gts View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1973gts Quote  Post ReplyReply Direct Link To This Post Posted: 04-July-2020 at 2:53PM
Vince, thanks for the additional info, glad it's the right one, and John, I know what you mean, there's only one or two places I go locally when I need advice on a part, gotten too much bad info from alot of the clerks.
Dave - 1973 GTS N code
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mtrigger00 Quote  Post ReplyReply Direct Link To This Post Posted: 29-July-2020 at 4:40AM
Where did you get your brake booster from?  Im converting my 72 gts to power brake but im not having much luck finding a compatible booster in stock anywhere. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote chuxster Quote  Post ReplyReply Direct Link To This Post Posted: 29-July-2020 at 12:02PM
I just learned the hard way that a 1973 Torino power brake master cylinder has a 9/16” port to the front discs, and a manual brake master cylinder has a 1/2” port to the front. Of course the parts store had ordered the wrong one for me. Minor interruption in my late Sunday evening project
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 29-July-2020 at 12:11PM
As far as I know, 1972 boosters are no longer available. You have to source a used one or use a later year booster. There are rebuild services you find a rebuildable core. 
Vince

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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 29-July-2020 at 12:11PM
 if you upgrade to power brakes with a booster... youll want to use a power brake master cylinder too

 i just shipped off my last booster yesterday to a guy in NY...
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kent11202 Quote  Post ReplyReply Direct Link To This Post Posted: 31-July-2020 at 11:41AM
I used this outfit a few years ago:
 
 
I used them because somewhere in the process "somebody" told me it was "illegal to rebuild" a master cylinder in this crazy state.  The source had always been reliable but.....
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