1970 Mustang Coupe MC brake lines...
10-04-2017, 11:11 PM
#1
Thread Starter
Join Date: Sep 2017
Location: California
Posts: 9
1970 Mustang Coupe MC brake lines...
I thought I'd start a new thread on my brake line question...
I purchased a 1970 Mach 1 Power booster, master cylinder and brake pedal for my 1970 Mustang Coupe. I see various Master cylinder to proportional valve brake lines but not 100% certain if they will fit my application.
Question 1: Will my existing proportional valve work? (I have drums brakes on all 4 wheels)
Question 2: Where do I find just the brake lines. I've had several suggestions but still can't find the brake lines for my year and application.
I've included a couple photos of the parts and car for reference. If you have a link to a source that would be great.
Thank you in advance.
I purchased a 1970 Mach 1 Power booster, master cylinder and brake pedal for my 1970 Mustang Coupe. I see various Master cylinder to proportional valve brake lines but not 100% certain if they will fit my application.
Question 1: Will my existing proportional valve work? (I have drums brakes on all 4 wheels)
Question 2: Where do I find just the brake lines. I've had several suggestions but still can't find the brake lines for my year and application.
I've included a couple photos of the parts and car for reference. If you have a link to a source that would be great.
Thank you in advance.
10-05-2017, 12:27 AM
#2
3rd Gear Member
Join Date: Jul 2017
Location: AZ
Posts: 849
I thought I'd start a new thread on my brake line question...
I purchased a 1970 Mach 1 Power booster, master cylinder and brake pedal for my 1970 Mustang Coupe. I see various Master cylinder to proportional valve brake lines but not 100% certain if they will fit my application.
Question 1: Will my existing proportional valve work? (I have drums brakes on all 4 wheels)
Question 2: Where do I find just the brake lines. I've had several suggestions but still can't find the brake lines for my year and application.
I've included a couple photos of the parts and car for reference. If you have a link to a source that would be great.
Thank you in advance.
I purchased a 1970 Mach 1 Power booster, master cylinder and brake pedal for my 1970 Mustang Coupe. I see various Master cylinder to proportional valve brake lines but not 100% certain if they will fit my application.
Question 1: Will my existing proportional valve work? (I have drums brakes on all 4 wheels)
Question 2: Where do I find just the brake lines. I've had several suggestions but still can't find the brake lines for my year and application.
I've included a couple photos of the parts and car for reference. If you have a link to a source that would be great.
Thank you in advance.
Replacement brake lines are typically sold in individual lengths, suitable for multiple-vehicle use. You pull out the old line, get a new one approximating the same length, bend and twist until it mimics the old one. Then, tighten the fittings/. imp
10-05-2017, 07:21 AM
#3
6th Gear Member
Join Date: Aug 2007
Location: Elk Grove, CA
Posts: 5,896
It's hard to tell from the picture, but I think that's just a distribution block, not a prop valve.
Of course, that means you DO need a prop valve. You can either plumb an adjustable valve into the rear brake line, or replace the existing distribution valve with a combo unit.
Of course, that means you DO need a prop valve. You can either plumb an adjustable valve into the rear brake line, or replace the existing distribution valve with a combo unit.
10-05-2017, 02:17 PM
#4
Thread Starter
Join Date: Sep 2017
Location: California
Posts: 9
Thus my ignorance is shown. I was under the assumption all dividers were proportional valves in nature.
It seems I can use a proper length of brake line and bend to my needs, with additional length for stress relief bends.
Thank you for you insight, much appreciated.
It seems I can use a proper length of brake line and bend to my needs, with additional length for stress relief bends.
Thank you for you insight, much appreciated.
Something is fishy. No proportioning valve is used with 4-wheel drum brakes. Are you sure there IS a proportioning valve present?
Replacement brake lines are typically sold in individual lengths, suitable for multiple-vehicle use. You pull out the old line, get a new one approximating the same length, bend and twist until it mimics the old one. Then, tighten the fittings/. imp
Replacement brake lines are typically sold in individual lengths, suitable for multiple-vehicle use. You pull out the old line, get a new one approximating the same length, bend and twist until it mimics the old one. Then, tighten the fittings/. imp
10-05-2017, 02:20 PM
#5
Thread Starter
Join Date: Sep 2017
Location: California
Posts: 9
I believe you're correct. I will check tonight if there is a valve circuit.
So with a 4 wheel drum brake system a prop valve is needed?
Question: I can get the original Mach 1 Master Cylinder cables and prop valve. The Mach 1 had disc brakes up front, not certain but I believe the rear were drum brakes.
So with a 4 wheel drum brake system a prop valve is needed?
Question: I can get the original Mach 1 Master Cylinder cables and prop valve. The Mach 1 had disc brakes up front, not certain but I believe the rear were drum brakes.
It's hard to tell from the picture, but I think that's just a distribution block, not a prop valve.
Of course, that means you DO need a prop valve. You can either plumb an adjustable valve into the rear brake line, or replace the existing distribution valve with a combo unit.
Of course, that means you DO need a prop valve. You can either plumb an adjustable valve into the rear brake line, or replace the existing distribution valve with a combo unit.
10-06-2017, 12:23 AM
#6
Thread Starter
Join Date: Sep 2017
Location: California
Posts: 9
I included a photo of the brake line divider. Since I have 4 drum brakes I should not need a proportional valve. Is that correct? From what I understand now the prop valve is used for front disc and rear drum brake setups having equal initial contact of the pads and brake shoes.
10-07-2017, 12:37 AM
#8
Thread Starter
Join Date: Sep 2017
Location: California
Posts: 9
I must be missing something. I need a prop valve even if I'm running 4 drum brakes? I do not plan on changing to disc brakes any time soon. I want the comfort features the power booster provides.
10-07-2017, 06:24 PM
#9
6th Gear Member
Join Date: Aug 2007
Location: Elk Grove, CA
Posts: 5,896
Sorry, no, you do NOT need a proportioning valve with 4 wheel drums.
Also, prop valves do not maintain pressure, they proportion it front/rear. Discs require much less pressure than drums, so you have to reduce that pressure to keep from locking up the discs before the drums.
Cebu, use loops in the lines to the m/c to provide flexibility
Also, prop valves do not maintain pressure, they proportion it front/rear. Discs require much less pressure than drums, so you have to reduce that pressure to keep from locking up the discs before the drums.
Cebu, use loops in the lines to the m/c to provide flexibility
10-07-2017, 06:37 PM
#10
Thread Starter
Join Date: Sep 2017
Location: California
Posts: 9
Bingo. I'll start looking for the proper length cables and will make use of loops for flexibility. Thank you for the clarification Starfury.
Sorry, no, you do NOT need a proportioning valve with 4 wheel drums.
Also, prop valves do not maintain pressure, they proportion it front/rear. Discs require much less pressure than drums, so you have to reduce that pressure to keep from locking up the discs before the drums.
Cebu, use loops in the lines to the m/c to provide flexibility
Also, prop valves do not maintain pressure, they proportion it front/rear. Discs require much less pressure than drums, so you have to reduce that pressure to keep from locking up the discs before the drums.
Cebu, use loops in the lines to the m/c to provide flexibility