73mm caliper upgrade on 88 GT got a ? about MC

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 24, 2005

#1

• May 24, 2005

• #1

can I get away with using the stock Master cylinder w/ the 73 mm calipers? I know some people upgrade when they do this but can I get away w/ keeping the stock one for now?

 

jrichker

StangNet's favorite TOOL

In Remembrance. Thank you for your contributions

Mar 10, 2000

27,512

2,813

234

Dublin GA

May 25, 2005

#2

• May 25, 2005

• #2

Bigger calipers with bigger pistons = more fluid needed to make them work. You will need the bigger MC. If you don't you may not have enough pedal to get the brakes to work correctly.

I am using a 95 GT MC & one of Matt90GT's fitting kits. Works great, and I have had no problems.

 

R

ratrapp

New Member

Apr 24, 2004

510

0

0

buena vista,va

May 25, 2005

#3

• May 25, 2005

• #3

when i first changed to 73mm without a m/c swap i lost a lot of pedal.definitly upgrade the m/c or you'll have a lot less braking ability.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 25, 2005

#4

• May 25, 2005

• #4

So you guys kept the stock booster and just replaced the MC?

I'm thinking about going with one a Rebuilt master cylinder from a 1986 Lincoln. part # R105806. From what I understand this is basically the SVO unit. It features a larger bore (1.125" vs 0.827") and steel pistons.

Matt90gt's site isn't working some I"m kinda out of luck to see what else will work.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 25, 2005

#5

• May 25, 2005

• #5

Anyone have a list of the MC's I can use just in case they don't have the one I'm looking for?

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 25, 2005

#6

• May 25, 2005

• #6

Did some searching on the web... Correct me if I'm wrong.

86 SVO
86 lincoln
93 Cobra
94-97 GT or V6 MC

 

R

ratrapp

New Member

Apr 24, 2004

510

0

0

buena vista,va

May 25, 2005

#7

• May 25, 2005

• #7

i personally use the 94-95gt m/c and booster combo on mine.the booster was a tight fit but it went in.

 

S

SmockDoiley

New Member

Jun 14, 2003

1,591

2

0

San Diego, CA

May 25, 2005

#8

• May 25, 2005

• #8

I love working at Advance Auto Parts with 20% discount. I can work as little as 8 hours a week and still get the discount. You all should look into that.

 

Funanin

Founding Member

Nov 26, 2001

356

0

0

Horsham, Pennsylvania

May 25, 2005

#9

• May 25, 2005

• #9

i work for ford and get things 10% above cost. you all should look into that.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 26, 2005

#10

• May 26, 2005

• #10

I ordered a 94 gt MC today should be here tomorrow. So this is going to bolt onto my stock 88 brake booster no problem and give me a good brake feel even with the stock 88 booster?

 

tmoss

Gettin Wired

Founding Member

Jun 28, 2001

7,153

32

128

Saint Louis, MO

May 26, 2005

#11

• May 26, 2005

• #11

You will also more than likely have to adjust the actuator rod for the booster - do a search, there are good illustrated instructions out there.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 26, 2005

#12

• May 26, 2005

• #12

tmoss said:

You will also more than likely have to adjust the actuator rod for the booster - do a search, there are good illustrated instructions out there.

Click to expand...

I've heard it's 1 to 1 1/2 turns ccw. But the stock booster will be ok right?

 

jrichker

StangNet's favorite TOOL

In Remembrance. Thank you for your contributions

Mar 10, 2000

27,512

2,813

234

Dublin GA

May 27, 2005

#13

• May 27, 2005

• #13

ram360 said:

I've heard it's 1 to 1 1/2 turns ccw. But the stock booster will be ok right?

Click to expand...

I am running a stock booster with mine. The pedal pressure is just right, not too hard or too touchy.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 29, 2005

#14

• May 29, 2005

• #14

I started working on the car today. I got the master cylinder but it doesn't have the plastic resevour for the brake fluid attached to it. I bought it from autozone. I figured the stock one from the other MC would work, but It doesn't. Shouldn't the new one come with the resevour attached already? So without that I'm basically stuck. Cannot bench bleed the MC w/o it so I can't put it into the car until that's done. That's problem #1. Problem #2 is that my old MC had 3 ports for lines (2 on the side and one on the bottom) This 94 gt MC only has 2 ports on the side. What did you guys do to reconfigure the lines to make this work? I assumed you kept everything else stock and just changed the MC itself?

 

tmoss

Gettin Wired

Founding Member

Jun 28, 2001

7,153

32

128

Saint Louis, MO

May 29, 2005

#15

• May 29, 2005

• #15

You have to convert from a 3-port to a 2-port configuration, that is why I suggested you find one of the illustrated guides I've seen referenced from web sites before. Anyone got a link?

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 30, 2005

#16

• May 30, 2005

• #16

yeah, I need a link or something. I tried searching but I'm not coming up with anything.

 

R

ratrapp

New Member

Apr 24, 2004

510

0

0

buena vista,va

May 30, 2005

#17

• May 30, 2005

• #17

i purchased a new bendix m/c from advance auto(the rebuilt units don't have reservoirs)and it came with a reservoir.maximum motorsports and others offer the 2-3 port conversion kits.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 30, 2005

#18

• May 30, 2005

• #18

This is the 3-2 conversion I used on my other car when I installed a line lock (however my other car already had a 2 port mc). I'm guessing this is the same thing I'm supposed to do when I swap the MC from a 3 port to 2 port right?

Now I just need to find out which lines are which. My other car has a little different setup so I'm not sure. The line that connected directly into the underside of the MC is for? and the two lines that run from the side of the MC to the proportioning valve are? I'm having a hard time tracing them. I have a spare line lock so I'll do the 3-2 conversion that way.

 

ram360

Founding Member

Oct 19, 2002

2,162

1

59

Pennsylvania

May 30, 2005

#19

• May 30, 2005

• #19

ratrapp said:

i purchased a new bendix m/c from advance auto(the rebuilt units don't have reservoirs)and it came with a reservoir.maximum motorsports and others offer the 2-3 port conversion kits.

Click to expand...

Thanks, I'll have to get a new one then.