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Technical Is there any coating that is impervious to brake fluid?

Discussion in 'The Hokey Ass Message Board' started by Roothawg, Jul 18, 2022.

  1. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    What could a guy paint a master cylinder with that would last?

    I figured chrome would withstand the fluid.
    What about powder coating?

    Any info is appreciated.

    Thanks,
    Root

    [​IMG]
     
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  2. Rickybop
    Joined: May 23, 2008
    Posts: 9,910

    Rickybop
    ALLIANCE MEMBER

    Eastwood has something called
    "Brake Gray Paint"
    "Brake fluid resistant."
    No experience with it.
    There's a YouTube video.
     
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  3. Powder coat will hold up, that's what I use on masters.... although the lighter colors can discolor if not kept clean. I stick with black.
     
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  4. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    I was thinking wimbleton white. ;)
     
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  5. chessterd5
    Joined: May 26, 2013
    Posts: 903

    chessterd5
    Member
    from u.s.a.

  6. squirrel
    Joined: Sep 23, 2004
    Posts: 57,434

    squirrel
    ALLIANCE MEMBER

    A friend gave me this one off his 57, it had been chromed decades ago...I used it on my 55 for several years, never lost any more chrome off it.

    so....search the swap meets and ebay for an old chrome MC, and it'll look more traditional than powder coating, as a bonus.

    mc.jpg
     
  7. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    If we had a decent chrome shop, I'd chrome it. I may have to box it up and send it with the Caddy valve covers to WA. and let @Bandit Billy drop it off at his chrome shop.
     
  8. Powder coating works. HRP
     
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  9. Moriarity
    Joined: Apr 11, 2001
    Posts: 33,736

    Moriarity
    SUPER MODERATOR
    Staff Member

  10. Chrome for sure; before and after tells the story.
    old master.JPG chrome master.JPG
     
  11. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    Guess I better find a brand new casting before dropping the coin on chrome. Typical Roothawg fashion is to have one chromed, only to find out it’s out of tolerance. Nice shiny core.
     
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  12. And is much cheaper... If you use a lower gloss powder, it can be indistinguishable from most paint.

    Best stuff going for battery trays too. I'll coat a tray multiple times to get a nice thick coating. Battery acid will discolor it, but I have yet to see even a trace of rust appear on the trays I've done. Just make sure you've got every speck of rust off before coating and you have a good surface 'tooth' so the powder won't lift.
     
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  13. saltracer219
    Joined: Sep 23, 2006
    Posts: 1,133

    saltracer219
    Member

    I use Silicone brake fluid in my Hot Rods so it is no longer a problem.
     
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  14. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    What has to be done to run Dot 5? If it is a new system, is it just change fluids?
     
  15. squirrel
    Joined: Sep 23, 2004
    Posts: 57,434

    squirrel
    ALLIANCE MEMBER

    make sure the car is finished before you put it in, because where you spill, paint won't want to stick
     
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  16. Budget36
    Joined: Nov 29, 2014
    Posts: 14,426

    Budget36
    Member

    Curious about this, do you just tape over the reservoir and open ports or?

    Thanks.
     
  17. 59Apachegail
    Joined: Apr 30, 2011
    Posts: 1,508

    59Apachegail
    Member
    from New York

    I purchased calipers already powder coated from a pretty reputable source. They looked great although I never see them through my wheels. My goal was longevity and protection from rust. The simple action of bleeding them a few times caused the area around the purge valve to bubble and chip. There was fluid there that was wiped every-time. That’s my 2 cents
     
  18. You don't want to use conventional masking tape as the cure heat will bake that stuff on and you'll play hell getting it off. They make 'special' tape for masking but it's expensive so I try to not need it. I've got reusable silicon plugs for most small holes and use kitchen aluminum foil to 'mask' most larger holes/voids. A loosely-wadded ball of foil will mask the reservoir(s) well enough, same for the bore.

    EDIT: I'll note that I usually won't plug most threaded holes as long as I can get a tap in there. I'll just chase the coating out with the tap. Powder won't go very far down most threaded holes, generally only a thread or two. Larger, shallow threaded holes for things like flare nuts I'll plug or anything with an oddball thread.

    Powder needs a CLEAN, DRY surface to properly stick so make sure any oils/fluids/etc are gone before coating. Even if they're not on a surface to be coated as they can run onto them or outgas, flawing the finish.
     
    Last edited: Jul 18, 2022
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  19. The pre-coat prep work is to blame for that; they didn't get it clean enough and/or have enough 'tooth'. I see that a lot with production-line coatings, they didn't pay enough attention to the details. Properly-applied powdercoat is a PITA to remove.
     
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  20. 427 sleeper
    Joined: Mar 8, 2017
    Posts: 3,173

    427 sleeper
    ALLIANCE MEMBER

    Holy Shit!!! Hell must be freezing over as we speak! The "King of Traditional Hot Rod's and Customs" has an internally regulated alternator on his '61 Impala!!! How much longer do we have until total Armageddon ensue's? LOL!!! :p:p:p
     
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  21. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    I wasn't gonna say anything....
     
  22. Rickybop
    Joined: May 23, 2008
    Posts: 9,910

    Rickybop
    ALLIANCE MEMBER

    Say it's not so...
     
  23. 427 sleeper
    Joined: Mar 8, 2017
    Posts: 3,173

    427 sleeper
    ALLIANCE MEMBER

    It's a good thing he has a sense of humor! :D:D:D At least it's still a 3 wire hook up... ;)
     
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  24. But is it 'traditional'?
     
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  25. 427 sleeper
    Joined: Mar 8, 2017
    Posts: 3,173

    427 sleeper
    ALLIANCE MEMBER

    Yes, a 3 wire hook up is traditional :)
     
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  26. Moriarity
    Joined: Apr 11, 2001
    Posts: 33,736

    Moriarity
    SUPER MODERATOR
    Staff Member

    I humbly beg forgiveness... I don't know what I was thinking. Maybe I hoped that my ignition points, bias ply tires, non overdrive manual transmission, and not one single piece of aftermarket suspension and zero billet anything would make up for the 1 insignificant transgression .....
     
  27. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

  28. saltflats
    Joined: Aug 14, 2007
    Posts: 12,878

    saltflats
    Member
    from Missouri

    Flush your system and go with the DOT 5
    I use it in the British cars I build to keep the paint on the firewall.
     
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  29. Roothawg
    Joined: Mar 14, 2001
    Posts: 25,183

    Roothawg
    Member

    It's a brand new system. Actually, it's on paper.
     
    427 sleeper likes this.

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