Yes, if you pull the caliper you are looking at new fluid and bleeding. And a fair amount of work.

If you leave them in place it will be quite difficult to clean them properly as well as get the paint on the right parts and keep off the wrong ones. Like the difference between a crap Macco paint job and a good one. It is up to you, obviously.

 

I have recently done this to my S2.

I used high temperature, high gloss engine paint (450+Celcius I think), black to match the originals. I painted over the Porsche name and used a fine, very flat file to bring back the Porsche logo. I did this with the calipers on using a very small brush. You cannot do all of the caliper surface with this method but can certainily cover the front visible areas.

As far a weathering goes, brake dust simply wipes clean and they retain their gloss finish for 1-2 years.

Just my 2 cents.


John

 

I did what Julian suggested earlier in the post...Removed the calipers, glass bead blasted them and powder coated them red...Impressive results...Alot of work but I was rebuilding the calipers anyways so they had to come off and apart.