Long story short they were removed and the brake oil got all over the calipers, and sat in a shop for a while. Got them back and i'm rebuilding them now, but can't get any of the stains off, used water and goo gone so far. It's night so haven't had the chance to try something else. Any ideas? to get it at least a bit more cleaner, without damaging the paint severely.

 

I'd try Dawn Power Dissolver. Find it on Amazon. Spray it on. Let sit 15 minutes. Brush. Rinse. Should come right off I'd guess.

 

I don't know if it would hurt the finish at all, but brake cleaner would probably get that grease off nicely.

 

It definitely would hurt it lol. That stuff eats through everything.

Use the method above or use all purpose cleaner (simple green) and a soft brush to scrub.

 

Maybe it's a good plan then? Great excuse for powdercoating...

 

+1 for simple green soak and soft brush.

 

Thats' the point, they sat at the powder coat shop for 2 months, apparently they couldn't get the bleeder screws off so they never powder coated it. It took me like 5 minutes to do it. I just want to put these back on don't feel like waiting again.

 

I used brake clean on mine without any problems. I figured Brake Clean was good for clean brakes, shows what I know

 

+1 on brake cleaner. Literally will remove anything lol

 

^^^This^^^

They are already knackered. and the finish is baked and cured.
Brake cleaner won't hurt them and anything it won't remove probably won't come off w/o sanding.

Honestly, now is a perfect time to scuff them up with some SP, and throw a few coats of VHT on them in your favorite color. Pick up a set of Akebono decals for $15 from one of the vendors here slap em on and follow-up with a few coats of clear.

Now is the time.

 

^^^ I agree with 'Zilla.

If they have been sitting with brake fluid on them, you might have a tough time getting anywhere as brake fluid is highly corrosive. If however you're intent on keeping them looking stock, start with least abrasive methods and slowly work your way up. I've used a light spray of WD-40 let it sit for a few min then scrub. If all those methods fail try a cutting compound and see if that is abrasive enough to polish it off, if not then go with some 800-1000 grit sand paper (perhaps lower if that fails) until you get where you want. Hopefully that doesn't burn through whatever clear coat is left. If/When you get it cleaned maybe hit it with a coat or two of clear to keep it looking nice and easy to clean.

BUT like Bikezilla said if you want a new look now is the time to paint, save you a lot of time and they are already off the car. Sand, Prep, Paint...

Good luck!