Turning Rotors
01-05-2009, 06:49 PM
#1
Racer
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Turning Rotors
This is probably a silly question, but figured I'd ask anyways. Is there any risk to doing HPDE's on rotors that have been turned? I have a set of oem rotors that I thought were toast, but a buddy of mine told me that there were ok and needed to be turned. The oem rotors had had spider cracking and some superficial cracking from hole to hole, but after a quick trip to NAPA they look great (no cracking). Thanks
Last edited by Zee0hh6ix; 01-05-2009 at 06:50 PM. Reason: spelling
01-05-2009, 07:05 PM
#2
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I wouldn't. Turning them removed material that is needed to absorb heat. The are now thinner and weaker and even more likely to crack. Trash them and buy a set of new ones before going to the track.
01-05-2009, 07:18 PM
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Racer
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Are they worth anything? Street driving? I currently have a set of dba 4000's for HPDE's, but they are getting worn out. Guess I'll look to replace those outright.
01-05-2009, 07:19 PM
#5
Team Owner
I think I have to 
as well.
If they cracked with the original mass, they will crack that much sooner now and possibly in a more acute manner.
I switched my C6 to C5 brackets and now get NAPA solid rotors for much much less and change them about every 3rd event.
Much safer, cheaper and stops just as good.
as well.If they cracked with the original mass, they will crack that much sooner now and possibly in a more acute manner.
I switched my C6 to C5 brackets and now get NAPA solid rotors for much much less and change them about every 3rd event.
Much safer, cheaper and stops just as good.
01-05-2009, 07:29 PM
#6
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If they look bad enough to keep you from using them then they are not any better after being turned.
Bill
Bill
01-05-2009, 08:33 PM
#8
Le Mans Master
01-05-2009, 09:12 PM
#9
Le Mans Master
"Most" shops will not turn a rotor below the minimum spec. If they've only been turned once, I would definately use them on the street and never worry about it.
01-05-2009, 09:19 PM
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Why would you ever turn a rotor? I've never had a rotor on the Vette wrap just crack than it's trash.
01-06-2009, 06:58 AM
#11
Le Mans Master
I do not recommend it for the track - but I have done it for "seasoned" replacements. They seem to do better then "green" rotors as far as cracking goes.