Power Stop rotors...ayone have them
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Instructor
Joined: Jan 2006
Posts: 127
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Power Stop rotors...ayone have them
Looking to replace the rotors on my 02Z.The Power stop look to be a good,middle grade piece.I have heard they are Brembo blanks that have been drilled/slotted.
Anyone have them? Opinions?
thx
ns3
Anyone have them? Opinions?
thx
ns3
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Since you asked, I'll give you my opinion:
PowerSlot rotors have a much more durable coating than do the cheaper brands. The latest ones have a black electrostatic coating that'll last much longer than zinc-washed coatings.
Here's where I bought mine:
http://www.tirerack.com/brakes/brake...1&autoModClar=
The Viper ACR, Cadillac CTS-V, Caparo, and others come from the factory with slotted-only rotors.
PowerSlot rotors have a much more durable coating than do the cheaper brands. The latest ones have a black electrostatic coating that'll last much longer than zinc-washed coatings.
Here's where I bought mine:
http://www.tirerack.com/brakes/brake...1&autoModClar=
The Viper ACR, Cadillac CTS-V, Caparo, and others come from the factory with slotted-only rotors.
Racer
Joined: Oct 2009
Posts: 252
Likes: 2
Since you asked, I'll give you my opinion:
PowerSlot rotors have a much more durable coating than do the cheaper brands. The latest ones have a black electrostatic coating that'll last much longer than zinc-washed coatings.
Here's where I bought mine:
http://www.tirerack.com/brakes/brake...1&autoModClar=
The Viper ACR, Cadillac CTS-V, Caparo, and others come from the factory with slotted-only rotors.
PowerSlot rotors have a much more durable coating than do the cheaper brands. The latest ones have a black electrostatic coating that'll last much longer than zinc-washed coatings.
Here's where I bought mine:
http://www.tirerack.com/brakes/brake...1&autoModClar=
The Viper ACR, Cadillac CTS-V, Caparo, and others come from the factory with slotted-only rotors.
PowerSlot (owned now by Centric) uses Centric-sourced blanks and the (variable thickness) black coating. Sometimes OK, sometimes not. As long as you get a set that has evenly applied coating, they should not cause a problem. Back when they were independent, they used a lot of DBA blanks. Not any more.
PowerStop sources their blanks from various sources (including Brembo), machines them and zinc plates them. Brembo blanks can be very good, average or not very good at all, depending on part number. About 20% of theirs are sourced from other suppliers.
The black e-coating is not superior to properly done zinc chromate plating as far as durability goes. Neither is perfect, but brake rotors are a demanding application for corrosion protective coatings due to the temperatures involved. Both said coatings will flake off once the rotor has been at elevated temperatures due to rotor growth. I've gotten the black stuff to come off just a bit earlier than the zinc, while bedding pads actually. But it depends on how well the particular rotors were coated.
You may want to look at Stillen rotors, since they have been doing them for over 20 years. Not the cheapest, but then again, not the cheapest.
Chris
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
I didn't mean to imply that these are the same companies, only that I researched various companies and their products before choosing PowerSlots, which I bought many years ago. They are cadmium plated, a coating that I have found to be much more durable than zinc coatings. I live somewhat close to the coast and there is no corrosion that I can see. My guess is that PowerSlot/Centric moved away from cadmium because of its potential (detrimental) environmental effects.
By the way, more info on electrostatic coatings can be found here:
http://www.brakewarehouse.com/centric_e_coating.asp
By the way, more info on electrostatic coatings can be found here:
http://www.brakewarehouse.com/centric_e_coating.asp
Racer
Joined: Oct 2009
Posts: 252
Likes: 2
I didn't mean to imply that these are the same companies, only that I researched various companies and their products before choosing PowerSlots, which I bought many years ago. They are cadmium plated, a coating that I have found to be much more durable than zinc coatings. I live somewhat close to the coast and there is no corrosion that I can see. My guess is that PowerSlot/Centric moved away from cadmium because of its potential (detrimental) environmental effects.
By the way, more info on electrostatic coatings can be found here:
http://www.brakewarehouse.com/centric_e_coating.asp
By the way, more info on electrostatic coatings can be found here:
http://www.brakewarehouse.com/centric_e_coating.asp
The reason why the better rotor manufacturers don't use cadmium is that is has a tendency to contaminate brake pads. Not every time, but the amount of customer service require to stay on top of the problems cadmium causes is just not worth it.
Thanks for additional info. My previous comments are based on seeing these daily. In my experience, zinc will protect better when the rotors get hot (to a point!). If always driving mellow with no track days, the e-coating should stay intact for a very long time.
Chris
