88' Master Cylinder Question-Fitting To The 82'

Mustang78

New Member

Feb 8, 2006

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Aberdeen, WA

Mar 20, 2007

#1

• Mar 20, 2007

• #1

well i bought an 88 master cylinder and brake booster from a parts car to replace my 82' units with 100K on em, my stock MC has only 2 outlets, and the hoses are both different size threads, on the 88' unit it has 3 outlets, two on the side like my old one and one on the bottom, can i block off the one on the bottom??? on my old setup the 2 lines go to a block which then brings it to the rear brakes, i think this third line on the 88' is for the rear brakes but im not sure...also do parts stores sell all the fittings i need to make my own short brake lines?(just from the MC to the distribution block below it) Thanks and here's a picture i found of the 88' MC
http://www.partsamerica.com/product_images/img/a1c/104005.jpg

~Mark~

 

Aryan15

Member

Sep 22, 2003

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CA

Mar 20, 2007

#2

• Mar 20, 2007

• #2

On my car the two lines go to the prop. valve, and the one on the bottom goes to the driver's side front. One line for the two rear and one for the passenger side front. I don't understand it but thats where they go.

 

Mustang78

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Feb 8, 2006

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Aberdeen, WA

Mar 20, 2007

#3

• Mar 20, 2007

• #3

hmm maybe a picture would help.. i really wanna use this MC, and hope its better than my stocker

~Mark~

 

Mustang78

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Feb 8, 2006

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Aberdeen, WA

Mar 21, 2007

#4

• Mar 21, 2007

• #4

ttt

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

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Mar 21, 2007

#5

• Mar 21, 2007

• #5

Aryan is correct how it runs.


Two of the brake lines run to the prop valve, while one runs direct to the driver's front wheel.


Unsure if you can block one, but i beleive the thread pitches are different anyway.

Why not use an OEM MC for your year??

 

Mustang78

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Feb 8, 2006

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Aberdeen, WA

Mar 21, 2007

#6

• Mar 21, 2007

• #6

my brakes are pretty much rock hard and dont change much when the car is completely off. I have a stock HO motor/cam for now, and i am in the process of putting 11" brakes on, i have the drivers side on but i broke 2 spring compressors and the rented one doesnt fit no matter what, so im stuck. I was going out on a limb to think that the newer 88' MC would be better than my stock 82', would i be right or is my limb going to break?

~Mark~

 

Mustang5L5

That is…until I whipped out my Bissell

Mod Dude

Feb 18, 2001

43,249

17,934

224

Massachusetts

Mar 22, 2007

#7

• Mar 22, 2007

• #7

If it's hard, i beleive it's a booster issue.

You can upgrade to the 87-93 dual diaphram unit found on the V8 Mustangs. It's a little bigger than yours and should help with feel. I'd try that before replacing your MC.

 

Mustang78

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Feb 8, 2006

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Aberdeen, WA

Mar 22, 2007

#8

• Mar 22, 2007

• #8

cool, Thanks!

~Mark~

 

393 notch

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Jan 1, 2007

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Mar 22, 2007

#9

• Mar 22, 2007

• #9

x2 its the booster, id did the swap your talking about to my 82 gt. but i changed both booster and mc at the same time with an 89 set up. i can send you i pic. i remember flaring a line. im not sure why but once i look under the hood im sure it will come back to me, its dark now so ill get the pic in the morning. ray