Brake Master Cylinder Paint

[Davedacarpainter]

Ok, I have to pull my master cylinder back off to fill in all of those nasty holes behind it.
I was thinking that while I have it off, why not paint it?
What kind of paint should I use? Will ordinary automotive paint be ok, or will the brake fluid screw it up?

 

[mikestang63]

I would use the same paint for brake calipers and drums/

 

[Boosted92LX]

I didn't paint my mc, but i used black engine paint on the cobra booster.

 

[Davedacarpainter]

Maybe the POR 15 I have been using on the interior? It's supposed to be tough. Heat wise though, it's only rated to 400*.

 

[mikestang63]

Maybe the POR 15 I have been using on the interior? It's supposed to be tough.

Can't see why not- it is not an engine or moving part that is subject to high heat.

 

[jrichker]

Automotive brake fluid has a solvent effect on most paints and softens them so that they blister and peel off.

Eastwood has a paint that they claim is brake fluid resistant, however it seems that It only comes in one color - gray...

http://www.eastwood.com/eastwood-brake-gray-brake-fluid-resistant-paint.html

Edit: POR15 also is brake fluid resistant - see
View: https://www.youtube.com/watch?v=Sll8NwIaqfE

 

[Mustang5L5]

I painted mine with whatever grey paint I had laying around. I carefully bench bled it, installed it, and then proceeded to wash it down with water ASAP. No issues since.

Since brake fluid is hydroscopic, the water flush should be sufficient to remove the external fluid. Usually brake fluid needs to sit a bit on paint to cause it to blister. Remove it right away and you should be fine.


Reason why I always hose off a car after doing a brake fluid flush...just in case I spilled or splashed fluid anywhere.

 

[Davedacarpainter]

Automotive brake fluid has a solvent effect on most paints and softens them so that they blister and peel off.

Eastwood has a paint that they claim is brake fluid resistant, however it seems that It only comes in one color - gray...

http://www.eastwood.com/eastwood-brake-gray-brake-fluid-resistant-paint.html

Edit: POR15 also is brake fluid resistant - see
View: https://www.youtube.com/watch?v=Sll8NwIaqfE

I seem to have an abundance of POR 15 right now. I painted my block semigloss black, that would match it pretty nicely. Think I'll go that way.
Thank you sir.