okay so long story, fixed my caliper guide rods, now how can i make sure that the brake is working..?
the rust didn't go away and i just went on a quick drive doing some very heavy braking intentionally.
they are also cross drilled/slotted rotors, but should not be permanently rusting..i can only think that something is screwed up again.

 

it really depends on you climate where you live. mine rust also but your gide pins should be sealed also have High temp grease on them.. you sound normal to me

 

Well if the rotor had rust right after you drove it dosent seem like the brake is working, but did it pull hard to the side if not I guess is its working, go on a street that you make slippery then have someone on each side check to see if the wheels lock up, thats how I checked my rear breaks, by pulling the e brake, that was on worn out tires though

 

^ dam i frogot about that,Good eye there brian01tib..

 

dirt roads work best for that....

Generally though, you should not have any rust on the surface of your rotor if everything is working correctly...

 

Yea forgot about dirt roads I guess that would be easier lmao.gif

 

take a marker, draw a line on the face of the rotor and do some braking, if the line is gone after then its working, if its still there and untouched its not..

 

is there rust on both sides of the rotor?

did you try to swap rear rotors?

after driving try to touch right and left rear rotors (BE CAREFUL they would be HOT). Temperature should be the same.