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Brake line Question

  • Thread starter Thread starter CornerCarvin67
  • Start date Start date Dec 9, 2005

CornerCarvin67

New Member
Dec 30, 2004
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Dec 9, 2005
#1
  • Dec 9, 2005
  • #1
Does anyone know exactly the function of the braker terminal block that the brake lines go to after leaving the master cylinder? Obviously it splits the one feed to both front corners.... and the third goes to the rear of the car until that line gets split to the corners. But does anyone know if that block has any type of proportioning to it? I want to know if it's bottle necking the fluid at all. Since I put in a Baer proportioning valve in the rear line... I think I could simply put a Tee there in the front and just run the rear line straight out the MC. Any ideas??
 

Jester67

Member
Sep 21, 2004
908
1
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TN
Dec 9, 2005
#2
  • Dec 9, 2005
  • #2
It also has the switch for the brake light letting you know if the front or rear circuit fails. It is my understanding that it is not a proportioning valve that is located on the rear axle if the car has stock front disks.
 

CornerCarvin67

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Dec 30, 2004
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Dec 9, 2005
#3
  • Dec 9, 2005
  • #3
Well that switch doesn't control the rear brake lights. That switch is under the dash on the brake pedal. I guess I'm not to worried about keep the warning light one then... I'll surely know if I have a failure... whether with my pedal or a big pool of fluid on the ground.
 

Jester67

Member
Sep 21, 2004
908
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TN
Dec 9, 2005
#4
  • Dec 9, 2005
  • #4
Sorry i should have been more clear it is for the warning light
 

SuperDave

Early-Model Mentor
Founding Member
May 3, 2000
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Tacoma, WA USA
Dec 9, 2005
#5
  • Dec 9, 2005
  • #5
What are you working on?

The devil is in the details. What year car are you working on? (BTW, a drum brake car does NOT have a proportioning valve.)

SD
 

HistoricMustang

Active Member
Apr 11, 2003
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Confederate States of America
Dec 9, 2005
#6
  • Dec 9, 2005
  • #6
SuperDave said:
The devil is in the details. What year car are you working on? (BTW, a drum brake car does NOT have a proportioning valve.)

SD
Click to expand...

Oh man! Welcome Back!

HistoricMustang
www.historicmustang.com
 
B

bnickel

Founding Member
Aug 21, 2002
5,640
3
77
lubbock, texas
Dec 11, 2005
#7
  • Dec 11, 2005
  • #7
CornerCarvin67 said:
Does anyone know exactly the function of the braker terminal block that the brake lines go to after leaving the master cylinder? Obviously it splits the one feed to both front corners.... and the third goes to the rear of the car until that line gets split to the corners. But does anyone know if that block has any type of proportioning to it? I want to know if it's bottle necking the fluid at all. Since I put in a Baer proportioning valve in the rear line... I think I could simply put a Tee there in the front and just run the rear line straight out the MC. Any ideas??
Click to expand...

it is called a distribution block and that's about all it does, other than the brake warning light
 
J

JB66

New Member
Aug 21, 2004
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New York
Dec 11, 2005
#8
  • Dec 11, 2005
  • #8
I believe it also restricts the leaking line so you don't lose ALL your fluid. It's 'official' name is the Brake Pressure Differential Warning Valve. It is supposedly non-serviceable (for safety sake), but it IS needed in brake systems with split master cylinders. On disc/drum setups, it is usually combined with the proportioning valve.
 
6

67CoupeDriva

Member
Mar 15, 2004
165
0
16
South Carolina
Dec 12, 2005
#9
  • Dec 12, 2005
  • #9
All the above...not a proportioning valve, just a distribution block with a little float in between, if it moves too far one way (usually due to fluid loss or brake failure), the float blocks fluid from the offending section and illuminates the dash warning light.
 

Edbert

Founding Member
Jul 13, 2002
3,548
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109
Austin TX
Dec 12, 2005
#10
  • Dec 12, 2005
  • #10
Okay, a few things...

There were more than one of these units sold in 67, three that I can name and their valving IS different. They had them for drum/drum disc/drum and power-disc/drum applications.

The "thing" on the rear axle is a residual pressure valve, always necessary for drums and for discs mounted higher than the MC (not applicable to classic stangs).
 
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