1969 Charger Drum to Disc Conversion LEED Brake Kit FC2002-8405- No Fluid To Rear Brakes?!?

[68n69 Charger]

Good afternoon,
I am at whit's end on my brake installation on my restoration project. Started from scratch with a LEED Brake front disc brakes and drums in the rear.

Here are my questions/comments:
-My kit is a LEED Brake Kit FC2002-8405.

It has been so long since I have purchased the kit, I am not sure who I bought it from...ugh
-The master cylinder is a two bowl and different size outlets

-The kit came with a distribution block, that seems to be different than stock, that is not part of LEEDS kit. image below

-The LEED Brake kit came with a proportioning valve

-All new brake lines. I'll never buy stainless steel brake lines again! What a PITA flaring! It was like a sprinkler system going off when I first started pumping the brakes!

ISSUE(s):
1. I cannot get fluid to the rear drum brakes. I did get fluid at one time, but I used a vacuum pump to get fluid. I do not get fluid using gravity bleeding nor pedal pumping.
2. I can fully bleed the front disc brakes and had no air in the lines
3. I have checked the position of the "piston" inside of the distribution block and it does not appear to be off center, thus cutting off fluid to the rear drums.
4. I have checked for obstructions between the distribution block and the rear drums. Air flowed freely through the lines, including the proportioning valve.
QUESTIONS:
1. Does it matter what line (front/rear) is connected to the front bowl or the rear bowl on the MC? If it does matter, is the rear brake line to be connected to the front bowl? Or vise versa? I made new end connections, so it is possible that I them different than what the kit came with.

If it does matter, can someone explain why it matters?
I thought the front bowl and the rear bowl are connected internally, but I'm not positive about that.

Thanks to everyone that takes time to answer questions from folks like me! Getting closer every weekend

 

[davek]

I had a bad proportioning valve on my car. Disconnect the back rubber line and see if you get fluid. Are all the hoses new?

 

[davek]

I believe the back/bigger bowl is for the front. Bleed the pass side line first before dr side.

 

[BDnFL]

Good afternoon,
I am at whit's end on my brake installation on my restoration project. Started from scratch with a LEED Brake front disc brakes and drums in the rear.

Here are my questions/comments:
-My kit is a LEED Brake Kit FC2002-8405.
View attachment 1917228
It has been so long since I have purchased the kit, I am not sure who I bought it from...ugh
-The master cylinder is a two bowl and different size outlets
View attachment 1917237
-The kit came with a distribution block, that seems to be different than stock, that is not part of LEEDS kit. image below
View attachment 1917233
-The LEED Brake kit came with a proportioning valve
View attachment 1917238
-All new brake lines. I'll never buy stainless steel brake lines again! What a PITA flaring! It was like a sprinkler system going off when I first started pumping the brakes!

ISSUE(s):
1. I cannot get fluid to the rear drum brakes. I did get fluid at one time, but I used a vacuum pump to get fluid. I do not get fluid using gravity bleeding nor pedal pumping.
2. I can fully bleed the front disc brakes and had no air in the lines
3. I have checked the position of the "piston" inside of the distribution block and it does not appear to be off center, thus cutting off fluid to the rear drums.
4. I have checked for obstructions between the distribution block and the rear drums. Air flowed freely through the lines, including the proportioning valve.
QUESTIONS:
1. Does it matter what line (front/rear) is connected to the front bowl or the rear bowl on the MC? If it does matter, is the rear brake line to be connected to the front bowl? Or vise versa? I made new end connections, so it is possible that I them different than what the kit came with.

If it does matter, can someone explain why it matters?
I thought the front bowl and the rear bowl are connected internally, but I'm not positive about that.

Thanks to everyone that takes time to answer questions from folks like me! Getting closer every weekend

I just went this same issue last week, no fluid to rear drums on a new system.
I don’t see where you installed a Residual Valve but mine was installed backwards acting as a check valve stopping fluid flow. I was going crazy looking when I saw the fine print on RV showing MC they had piped to rear rather than master cylinder.
My point is triple check everything especially the flow routing on your distribution block.

 

[68n69 Charger]

I had a bad proportioning valve on my car. Disconnect the back rubber line and see if you get fluid. Are all the hoses new?

I checked the PV and air went through. All new lines.

 

[68n69 Charger]

I just went this same issue last week, no fluid to rear drums on a new system.
I don’t see where you installed a Residual Valve but mine was installed backwards acting as a check valve stopping fluid flow. I was going crazy looking when I saw the fine print on RV showing MC they had piped to rear rather than master cylinder.
My point is triple check everything especially the flow routing on your distribution block.

View attachment 1917350

I don’t have a residual valve. What’s its use?

 

[BDnFL]

I don’t have a residual valve. What’s its use?

Residual Valve is suggested when going disc/drum.
RV’s come in in 2lb or 10 lb.
10lb for disc/drum to keep slight pressure on the drums to overcome drum spring pressure.
Speedway Motors has a video explaining better and in more depth.