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Paint Master Cylinder to prevent rusting
#1
Im about to do my Disc brake conversion and I was wondering if anyone had any suggestions on painting the master cylinder to prevent it from becoming a giant ball of rust.

POR15 should work, but I think I would rather try something clear if thats possible.  That way it would still look like bare metal but won't rust.  Maybe theres some Eastwood stuff someone has used they would recommend.

Thanks

"I drank what?" - Socrates
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#2
I painted mine back in '03 with cast blast from NAPA. It still looks pretty good with minimal rusting. I'll be replacing it when I swap to the 351C next year, as it's probably time.


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#3
I too used "Cast Blast". It was a Plasti-Coat product, but also Dupicolor have it as well as Eastwood. Get the "Engine High Heat" version though.
Always be careful with brake fluid around paint if it's Dot 3 or 4.
Dot 4 did a great job of removing overspray paint from a spare set of tail lights I picked up. Nothing to lose, but the result was outstanding, cleaned them up like new!
Geoff.

I learn something new every day!
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#4
I have had good luck with this if you paint it ,and it dry's before you fill with brake fluid. It works ok if its full of fluid and already some surface rust.  https://www.eastwood.com/eastwood-brake-...rosol.html
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#5
runninpony 
Over 25 years ago I got mine chromed and it's held up very well!

71-73 Mustangs never die, they just go faster!
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#6
(10-08-2019, 06:50 PM)Canted 393 Wrote: I have had good luck with this if you paint it ,and it dry's before you fill with brake fluid. It works ok if its full of fluid and already some surface rust.  https://www.eastwood.com/eastwood-brake-...rosol.html
That was the Eastwood product I was thinking of, not used it, but I knew they had something similar to Cast Blast.
If it is showing signs of surface rust already, perhaps the paint was applied a bit too lightly. 
Also, before painting anything like this, it is important to thoroughly clean the part with a non-chlorinated brake cleaner and/or use (Duplicolor) Grease and Wax remover.

I learn something new every day!
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#7
Im going to give the Eastwood stuff a try. Its going on a NEW master cylinder so hopefully theres no rust on it yet. If so, I will clean it up. I also got their Paint Prep product as well to clean it..

"I drank what?" - Socrates
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#8
(10-09-2019, 09:41 AM)jowens1126 Wrote: Im going to give the Eastwood stuff a try.  Its going on a NEW master cylinder so hopefully theres no rust on it yet.  If so, I will clean it up.  I also got their Paint Prep product as well to clean it..
 As I said, I've not used this particular product, but I've been very impressed with Eastwood products I have used, especially the 2k ceramic paint in the engine bay.
 I'd say a good choice!

I learn something new every day!
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#9
Just spray some hi temp satin clear on it.

run_horse Run Horse Run!
John 72 Q Code
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#10
OK, so what if you were stupid [like me] and never painted the MC, and now it's all [surface] rusted up?

What products and/or procedures would be recommended to resolve the surface rust without making a big mess?  I'm hoping to avoid pulling the MC off and having to bleed brakes again.  I mean, I'll do it if I have to, but I'd rather not have to... ya know?

Eric

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