Master Cylinder Bench Bleed

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nodemon

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So, I removed my master cylinder (Manual Drum brakes all the way around) from my 72 Demon to clean it up and refinish. I've never driven the car and have no idea of the brake function other than they did not work when just trying to stop it from rolling. I'm pretty sure it's the original master cylinder too.
I've been bench bleeding it and the first few rounds of bleeding pushed out a ton of nasty, rusty looking fluid. I just have it all running into a bucket before I worried about pushing air out. The fluid has finally started to clear up, but I'm seeing tiny, dark "flakes" and specks of debris that seems to never end.
Should I just replace the master cylinder or will this eventually clear up..? They're not expensive to replace but I'd like to save where I can and keep as much original as possible.
With what I'm seeing, should also just expect to replace the lines too.. I'm sure they're gonna produce the same nastiness when they're flushed. Replace proportioning valve..?
I do have all new wheel cylinders. What's one do with a car that's been sitting for years..??
 
What's one do with a car that's been sitting for years..??

Expect anything that's rubber to have degraded and need replacement.

My car sat for over a decade and the braking required some planning. I took the path of replacement of the entire braking system (InlineTube) and moving to DOT 5.
 
Expect anything that's rubber to have degraded and need replacement.

My car sat for over a decade and the braking required some planning. I took the path of replacement of the entire braking system (InlineTube) and moving to DOT 5.
Probably the smart thing to do.. I guess if I'm going to try and skimp and save money, the braking system shouldn't be where it's done.
Thanks for the reply..!
 
Brakes and steering 2 systems you dont want to take a chance on. rebuild or replace..(safety first)
 

You can disassemble your master clean it up and see what the seals look like.
 
Disassemble to thoroughly clean. Lightly hone and install a M/C kit to keep it original. Now bench bleed. Bleed entire system until fluid runs clear at the wheel cylinders. As the brakes already cannot stop the car, all four need to be inspected and adjusted.
 
Pay attention to the flexible lines too, after sitting for years they most likely will need replacement. 65'
 
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