Did anyone succesfully re-paint the brake fluid reservoir on the master cylinder
in such a way that a bit of fluid would not peel of the paint immediately ?

My amazon is from 1963 which has those (non-plastic) die-cast reservoirs...


Any advice....or experience ?

I sprayed mine with the silver paint in a can that is sold for use on wheels. I sandblasted it first, then primed it with whatever the can said to use. It lasted perfectly until I spilt some fluid when refilling (DUH!). Now it is sort of mottled. I think the only paint that will survive fluid spill is a 2-pack epoxy, but initial preparation (e.g. sandblasting etc) is vital.

JohnH

As usual, my excuses for my espanglish.

My previously master cyl was one of these. I paint it with antirust black paint (zyncromat based, old style paint, no modern composition), 3 layers using a 1" brush, one layer by day. The first layer would be peel a bit, clean the peel, the second would be have very little peel, the final one will be remain until the next cylinder cap opening.

On the other side, check if your cap cover has a good fit, or pass some fluid on the borders (check it after drive the car for some minutes). I refit my cap using a bit of teflon tape around the upper border of the cylinder (on the cap thread), this is not the best solution, but work.

Joaquin Novara
Rojo 121 Amazon
Lima, Peru

Hm,

Looks quite good....is it that rust-converter stuff that usually needs a paintcoat to finish the result? Milky stuff when you apply it, black when it's dried and they mention it should be applied to the wet rust (water to it)?

I am also going to do the clutch reservoir which should be, if I am not mistaken, silver....

With some parts of that reservoir being stripped by the fluid, I see a nice metal (silvery) color. I was thinking of simply keeping that clean metal...if it is not iron...(rust).
What did you do getting the paint on that reservoir?

No, I'm living on Lima, Peru (southamerica), and enhancements like rust-converts are not available here. I'm use a local made anti-rust paint, based on zyncromat (if you go to any harwdare store, see for any attendant 40 years old or more, I'm sure he know who is zyncromat paint, this stuff is like standard pain, but, are mate and not hard like enamel - you can scrap it with your nail). On industrial paint (metallic structures), usually a second hand with enamel are used after the zyncromat (in my case, I leave it only in zyncromat due no one would be scratch the cylinder in the bay).

Of course, before paint, I peel the previously paint and clean the rust using WD-40, stone-paper and water stone-paper, on one day of hard work. I'm sure you have a more time saving and easy procedure for cleaning the rust on your town.

About the clutch reservoir, the original aluminiun color is the best option. I clean mine with WD40 and pulish it with brasso for aluminum( both are old stuff, please, take care on cleaning aluminium, are prone to have scratches), and finally, I cover it with a coat of transparent lacquer for enamel. If you see the photo (ten months after the paint) some parts of the lacquer goes green near to the clutch line, due contact with the clutch liquid.

Next week I will be paint my new twin master cylinder and reclear and paint my clutch cylinder. I will post a new photo after it.

Joaquin Novara
Rojo 121 Amazon
Lima - Peru