Mastercylinder confusion 79-86 to 87-93

gearheadboy

15 Year Member

Jan 15, 2003

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Greencastle Pa

Mar 17, 2004

#1

• Mar 17, 2004

• #1

Gentlemen, heres the deal. Yes I did a search and only got more corn-fused.
I have a 79 car. I upgraded all of my brakes to the stocker 87-93 v-8 stuff. Just bought the master cylinder and the flippin thing has 3 ports. My factory unit had 2. I have the 87-93 proportioning valve, and the old one. Both look the same. WHAT DO I DO WITH THE EXTRA PORT? Where did it go on the 87-93 car? help

 

gearheadboy

15 Year Member

Jan 15, 2003

1,425

177

84

Greencastle Pa

Mar 17, 2004

#2

• Mar 17, 2004

• #2

.

 

gearheadboy

15 Year Member

Jan 15, 2003

1,425

177

84

Greencastle Pa

Mar 17, 2004

#3

• Mar 17, 2004

• #3

Anyone got an 87-93 car with brakes? Where does the bottom line go?

 

Asha'man

Founding Member

Feb 5, 2002

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Denver

Mar 17, 2004

#4

• Mar 17, 2004

• #4

http://svo73mm.cjb.net Check Matt's site, he sells a thingy for the 3-2 port conversion, it's like $25.

Ash

 

Matt90GT

Founding Member

May 6, 2001

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Oregon

Mar 18, 2004

#5

• Mar 18, 2004

• #5

Asha'man said:

http://svo73mm.cjb.net Check Matt's site, he sells a thingy for the 3-2 port conversion, it's like $25.

Ash

Click to expand...

yeah and it only works on the 87-93 cars


Bottom line, you dont use the 87-93 GT/LX master cylinders.

For the 79-86 cars, use the 1" towncar from a 85 model year. adapt as needed

 

Asha'man

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Feb 5, 2002

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Denver

Mar 18, 2004

#6

• Mar 18, 2004

• #6

Hmm. Oh well.....the master has spoken.

Ash

 

H

hickory

New Member

Feb 5, 2004

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Reading PA

Mar 18, 2004

#7

• Mar 18, 2004

• #7

gearheadboy said:

Anyone got an 87-93 car with brakes? Where does the bottom line go?

Click to expand...

just use the 79 MC or the SVO MC keep the stock PV. The 79 to 86 MC is the best choice for the stock size calipers only use the SVO MC if you are using the 73mm calipers.

 

K

ka0tyk

Founding Member

Oct 10, 2001

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Los Angeles, CA

Mar 18, 2004

#8

• Mar 18, 2004

• #8

i dont see why a 3 port wouldnt work... 2 for up front, and 1 for the rear...

then again mine is a single with a proportioning block/valve thingy... heh.

 

larrendeuce

Member

Sep 13, 2003

649

1

19

Southern NJ

Mar 18, 2004

#9

• Mar 18, 2004

• #9

I just worked on a Thunderbird with a 3 port master cylinder. The port that skips the proportioning valve goes to the drivers side front brake.