Heat cracks in rotors - when to replace?
#42
Tech Contributor
Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
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#43
Race Director
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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#44
Supporting Vendor
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).
.
Have not seen a DBA T3 crack like that btw. Are you still using them?
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rawmar (08-25-2020)
#46
Le Mans Master
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.
#47
Race Director
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.
.
#48
Supporting Vendor
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.
.
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.
.