Everything is now new for my master cylinder and I am still getting a small amount of brake fluid that is leaking. It appears the leaks are coming around the 3 hole fitting. I have the copper washers in the correct places. It was originally put on wrong and I am wondering if the integrity of the copper washers were messed up, causing them to leak. Any suggestions? I plan to order some new copper washers and give that a try. If you look closely at the second pic, you can see it slowly drips and runs onto the bottom brake line. It isn't leaking a ton, just enough to be really annoying.

 

Yeah, in my opinion, you need new copper washers anytime you change anything with brake fittings. They'll seemingly leak every time if you try to re-use them. Any parts house has them.

 

Replace those washers. Any leak in the brake system is a recipe for disaster.
The brake fluid will heat up under stop and go conditions and become thinner thus the leak will become greater.
I seat my copper washers by tightening then loosening them a few times to get the best seal possible.

 

You can re-anneal copper washers easily, it makes them seal better. Just heat them to DULL RED with a propane torch, and let them cool in the air. You won't believe the difference it makes.

But... some of the "copper washers" made by our chinese brothers are NOT 100% copper. I would not use ones from AZ or anywhere but a reputable brake shop, or maybe NAPA. If you hold a "real" copper washer next to an alloyed one, it's easy to spot the difference. It helps to anneal even brand new ones. Aluminum is also a popular material for many brake systems.

 

I concur with the above... given their costs, simply replace everytime they are loosened. Also, make sure your brake manifold is completely free of grit and grime and that the rings are not damaged. You are in luck as the 3 output manifold is readily available from places like Macs (they also have the brake washers you need) More details over in this post: https://www.ford-trucks.com/forums/1...l#post12456974

 

I got these washers from midfifty...are they real copper ones?