So i just purchased a set of 4 sport calipers and needless to say they are a bit worse off than what the seller described.
I have spent a few hours sanding and polishing the calipers to get them looking better but i need to know a few things before i go any farther.
the front pistons were very rusted in the center and top edge. i don't know about the outer walls since the piston is retracted. I purchased a rust removal gel compound and was able to get the flaky rust and most of the surface rust removed. i have used my dremel to grind/sand out the interior of the piston to clean it up, however it is not a flush/flat/completely smooth surface.
there is minor pitting and i am concerned about this.
the rear calipers don't look so bad but one of the pistons will not retract.
should i get a rebuild kit for the fronts? can i buy new pistons to replace the old ones?
I didn't pay much for the set, but again, i wasn't expecting them to be as rusted as they are.