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DBA Rotors ???

Old 08-16-2008, 10:54 AM
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kermooni
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Default DBA Rotors ???

Please share your experience with DBA rotors.

Thanks.
Old 08-16-2008, 12:35 PM
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BEZ06
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I've got DBA 4000's front and rear on my C6Z.

They've got 5 track days and about 10,000 street miles - all with Hawk HP+ pads. The rotors look perfect.

I'll be going to some race pads for several events later in the summer and in the fall, so I expect more rotor wear with the more aggressive pads.

So far, so good!

Bob
Old 08-16-2008, 02:02 PM
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gonzalezfj
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Originally Posted by BEZ06
I've got DBA 4000's front and rear on my C6Z.

They've got 5 track days and about 10,000 street miles - all with Hawk HP+ pads. The rotors look perfect.

I'll be going to some race pads for several events later in the summer and in the fall, so I expect more rotor wear with the more aggressive pads.

So far, so good!

Bob
Great rotors (4000). I bought my first set this summer and put 22 HARD track sessions on them (C6Z) before the surface cracks started to get to the point where I wanted to change them.
Old 08-16-2008, 02:55 PM
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kermooni
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Originally Posted by gonzalezfj
... the surface cracks started ...
???
Old 08-16-2008, 05:42 PM
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gonzalezfj
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Originally Posted by kermooni
???
All iron rotors, when used hard, develop tiny surface cracks that grow in depth and length with each heat-cool cycle. Eventually they get large enough to crack the rotor all the way to the edge. It is wise to change them before they get to that particular stage of their service life.

If you haven't seen your rotors do this, you have not been using them hard enough.

Hope that explanation helps.
Old 08-17-2008, 02:12 AM
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kermooni
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Originally Posted by gonzalezfj
All iron rotors, when used hard, develop tiny surface cracks that grow in depth and length with each heat-cool cycle. Eventually they get large enough to crack the rotor all the way to the edge. It is wise to change them before they get to that particular stage of their service life.

If you haven't seen your rotors do this, you have not been using them hard enough.

Hope that explanation helps.
I have not. Thanks for the education. I always thought the cracks were due to uneven cooling - at lease from a physics point of view.
Old 08-17-2008, 08:12 PM
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outnumbered
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3 track days with DTC70 pads and many tiny cracks. No deep or wide ones.

Old 08-17-2008, 08:27 PM
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dvandentop
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i love the set i have!
Old 08-17-2008, 09:01 PM
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mikahb
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Never tried them myself, here's a thread from another forum though - FWIW.

http://www.nasaforums.com/viewtopic.php?f=42&t=23518
Old 08-17-2008, 09:02 PM
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Norm_05_ GTO
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I run dba front C6 ZO6 on all four corners on my CTS-V with good results.




Norm
Old 08-18-2008, 02:36 PM
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95jersey
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Originally Posted by mikahb
Never tried them myself, here's a thread from another forum though - FWIW.

http://www.nasaforums.com/viewtopic.php?f=42&t=23518
I glanced that post and it's a little misleading. He was fustrated that his 2 day old rotors cracked...we'll the first time he probably used them was at the track with high temp pads. He never mentioned anything about bedding or breaking them in with gentle heat cycles. You can easily crack the best rotors in the world if you slap them on and introduce massive heat.

The best thing to do with new rotors is use them on the street AS MUCH as possible before your next track day and they will last significantly longer at the track. The more low heat cycles you can introduce to them before a hard track day, the stronger the metal becomes.

I drive my Corvette actually during the winter and I still have the same rotors on the car after 6-7 track days with just minor cracks and these are C6Z rotors with the holes.

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