Brake booster salvageable?

[kerthunk]

I finally got to the point in my project where I am reassembling the brakes. Part of this is that I am putting on a new master cylinder as preventive medicine as I believe that I had a leaking issue. The booster seemed to work fine when I pulled it. Well, as I grabbed the assembly off the shelf, I noticed a good amount of rust below the master cylinder. Disassembled to find this:



Also found that the brake booster has a good inch and a half of brake fluid in it.



I'm looking for opinions on wether I can clean this up and be able to get many more years out of it or wether it is time to pony up the $700 to get a new one?

Can I just drain out the brake fluid and flush it with some water? Strip and repaint with some black Por-15? Any better ideas how to clean this mess up?

[spuggy]

Originally Posted by kerthunk

I'm looking for opinions on wether I can clean this up and be able to get many more years out of it or wether it is time to pony up the $700 to get a new one?

I'd wash it out, convert the rust and rattle-can it black. If it holds vacuum, it's good. At least for the time being.

If it comes to it, I've got one that was working when removed from my '77 that wouldn't cost $700