Rust on disc. brakes
08-20-2003, 09:22 PM
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Rust on disc. brakes
does anyone know of a product or a way to keep rust off of my discs? i try to clean them as much as possible but rust keeps coming back. can someone help me out? 
08-21-2003, 06:41 AM
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There are a couple things that I might suggest. If you want to keep using your existing calipers, you could to do this:
1. Have the hub chromed. This will keep it from rusting. This is not suggested as I am not sure if the chrome will handle the heat. Many places do chroming though.
2. Have the entire rotor platted with cadmium like the Stillen rotors. The cadmium on the disc will wear away as you apply the brakes, but it will remain on the hat and thus preventing rusting.
If you want new rotors, just buy the Stillen stock replacements. They come pre-coated with cadmium and are usually made of better steel. I am not aware of any places that do cadmium platting, but I have not looked into it. You might want to have a look around. I am not sure how much it would cost either. There is nothing that will prevent rust on the disc. The disc must remain pure steel.
1. Have the hub chromed. This will keep it from rusting. This is not suggested as I am not sure if the chrome will handle the heat. Many places do chroming though.
2. Have the entire rotor platted with cadmium like the Stillen rotors. The cadmium on the disc will wear away as you apply the brakes, but it will remain on the hat and thus preventing rusting.
If you want new rotors, just buy the Stillen stock replacements. They come pre-coated with cadmium and are usually made of better steel. I am not aware of any places that do cadmium platting, but I have not looked into it. You might want to have a look around. I am not sure how much it would cost either. There is nothing that will prevent rust on the disc. The disc must remain pure steel.
08-21-2003, 10:27 PM
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The rotors on your car are cast iron. Rust, ferrous oxide, is a result of a reaction between moisture, air and the iron content of any given metal. You see where I'm going with this?
Enjoy your car and quit worrying about rust developing on iron rotors.
Enjoy your car and quit worrying about rust developing on iron rotors.
08-23-2003, 04:01 PM
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If you're concerned about the hats rusting, there's not much you can do except buy a zinc washed rotor, such as a Brembo product or a set of the StopTech OEM replacement rotors that come with painted hats. You could also pull off your OEM rotors and wire brush the hats, then finish them with POR-15. I suggest the factory manifold gray color for a natural look.
If your pad-swept friction surfaces are rusting, then it probably means you haven't bedded in the pads. When you bed in your pads, you deposit an even transfer layer of pad material on the rotor surface. This transfer layer tends to reduce (or delay) the onset of surface rust on your rotors when the car is left parked for a while, particularly after washing it. See my bed-in instructions at: http://www.zeckhausen.com/bedding_in_brakes.htm
If your pad-swept friction surfaces are rusting, then it probably means you haven't bedded in the pads. When you bed in your pads, you deposit an even transfer layer of pad material on the rotor surface. This transfer layer tends to reduce (or delay) the onset of surface rust on your rotors when the car is left parked for a while, particularly after washing it. See my bed-in instructions at: http://www.zeckhausen.com/bedding_in_brakes.htm
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08-26-2003, 12:52 PM
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The solution is to drive the car!
And park it in the garage over night.
Driving the car around and applying the brake normally usually removes any rust that appears on mine.
And park it in the garage over night.
Driving the car around and applying the brake normally usually removes any rust that appears on mine.
08-26-2003, 10:14 PM
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Rotora has the slotted replacement rotors avaliable also. I think the msrp is at $326 for the fronts (2 rotors) and $260 for the rears (2 rotors). Rotora's rotors are black and they call it an "E-coating" process.
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