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Heat cracks in rotors - when to replace?

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Old 01-26-2015, 11:26 AM
  #41  
ZedO6
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Originally Posted by StKnoWhere
What Bob says and one of his photo's

http://forums.corvetteforum.com/1578565226-post19.html

I'd run that one more time....
Old 01-26-2015, 07:00 PM
  #42  
Bill Dearborn
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Originally Posted by Scooter70
That rotor looks perfect. Driving around the neighborhood should clear off the spot where the pad was sitting.
Has a lot of life left. At least 3 days worth of track duty.

Bill
Old 01-26-2015, 09:16 PM
  #43  
BEZ06
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Getting ready to make a run to the recycler about 18 months ago!!

I think that load was around 130 lbs of cast iron.

I also had 18 lbs of aluminum cans.

I got about $10 (55 cents per lb of aluminum) for the cans, and I think it was about $9 for the rotors (I think it was 6 or 7 cents per lb of cast iron).
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Old 01-27-2015, 05:12 PM
  #44  
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Originally Posted by BEZ06


Getting ready to make a run to the recycler about 18 months ago!!

I think that load was around 130 lbs of cast iron.

I also had 18 lbs of aluminum cans.

I got about $10 (55 cents per lb of aluminum) for the cans, and I think it was about $9 for the rotors (I think it was 6 or 7 cents per lb of cast iron).
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Nicely done

Have not seen a DBA T3 crack like that btw. Are you still using them?
Old 01-28-2015, 12:22 PM
  #45  
KNSBrakes
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This rotor is wearing perfectly but still has some life.

When they really open - you still have a day or 2 left.

When they are all up in the edge - probably worth changing.
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Old 01-28-2015, 03:30 PM
  #46  
village idiot
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Originally Posted by NOSLO6
As a live example, what do folks think of this one? I'm on the edge about whether to use it for one more day or retire it.

No cracks to edge, but crazing is visible across rotor face and I can catch a fingernail in the larger ones.


I found that once I started developing cracks like that, I absolutely ate through brake pads. (I drive the same rotors on the street).

Last edited by village idiot; 01-28-2015 at 03:33 PM.
Old 01-30-2015, 11:06 AM
  #47  
BEZ06
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Originally Posted by KNSBrakes
Nicely done

Have not seen a DBA T3 crack like that btw. Are you still using them?
In that picture you can see the top rotors in the center and right are both cracked wide open, and several of the others have smaller cracks. The one in the center on the bottom was destroyed when one of the pad pins on my stock C6 Z06 calipers backed out, the pad fell out, and the piston gouged up the rotor. I think only one of those (top left) is a rear rotor.

Now I've got a set of 2-piece Coleman rotors from PerformanceAFX, but they still crack.

Actually, I haven't been running the Z06 on the track for about a year. In Oct 2013 I blew the original LS7 after about 47,000 miles (5,000 or 6,000 on the track). Over the next 6 months I blew 2 replacement LS7s (actually they both seized-I think they were both screwed up from initial installation). I've got my 4th engine in it now, and I'm babying it with only street driving until I get a C7 Z06.

I've been running the ZR1 on the track all last year, and will continue to run it until I probably trade both cars in on a C7 Z06.

I LUV the carbon ceramics on the ZR1, and I'll be getting the Z07 option on a C7 Z06.
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Old 01-30-2015, 11:19 AM
  #48  
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Originally Posted by BEZ06
In that picture you can see the top rotors in the center and right are both cracked wide open, and several of the others have smaller cracks. The one in the center on the bottom was destroyed when one of the pad pins on my stock C6 Z06 calipers backed out, the pad fell out, and the piston gouged up the rotor. I think only one of those (top left) is a rear rotor.

Now I've got a set of 2-piece Coleman rotors from PerformanceAFX, but they still crack.

Actually, I haven't been running the Z06 on the track for about a year. In Oct 2013 I blew the original LS7 after about 47,000 miles (5,000 or 6,000 on the track). Over the next 6 months I blew 2 replacement LS7s (actually they both seized-I think they were both screwed up from initial installation). I've got my 4th engine in it now, and I'm babying it with only street driving until I get a C7 Z06.

I've been running the ZR1 on the track all last year, and will continue to run it until I probably trade both cars in on a C7 Z06.

I LUV the carbon ceramics on the ZR1, and I'll be getting the Z07 option on a C7 Z06.
.
Damn - sorry to hear about the motors. I keep wanting a C6Z but LS6/2/3's are not $15k.



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