Fellas... oem/napa rotors... how "heat checked" is too much? When to trash?
05-09-2007, 07:15 PM
#1
Team Owner
Thread Starter
Member Since: Mar 2001
Location: Virginia Beach
Posts: 25,889
Likes: 0
Received 5 Likes
on
5 Posts
CI 3-5-6-7-8 Veteran
Fellas... oem/napa rotors... how "heat checked" is too much? When to trash?
Installing some fresh calipers right now... I have one set of new napas, one set w/ one VIR HPDE on them, and another w/ 2.
The set w/ 2 has visible heat chracks in the disc surface, while the others do not (of course the new ones don't).
Are they trash?
Common sense says go ahead and install the new ones for this year, then keep the better set as backups and trash the heat checked ones.
How far do you go? The checking doesn't go to the edge of the rotor yet. Any good metric?
The set w/ 2 has visible heat chracks in the disc surface, while the others do not (of course the new ones don't).
Are they trash?
Common sense says go ahead and install the new ones for this year, then keep the better set as backups and trash the heat checked ones.
How far do you go? The checking doesn't go to the edge of the rotor yet. Any good metric?
05-09-2007, 08:32 PM
#3
Le Mans Master
I asked the same question about a month ago:
http://forums.corvetteforum.com/show....php?t=1673518
Understand that I mainly autocross with just one or two DEs a year. My rotors have been as heat checked as in your 2nd photo for two years with no real change.
HTH, and have a good one,
Mike
http://forums.corvetteforum.com/show....php?t=1673518
Understand that I mainly autocross with just one or two DEs a year. My rotors have been as heat checked as in your 2nd photo for two years with no real change.
HTH, and have a good one,
Mike
05-09-2007, 09:43 PM
#5
Safety Car
Member Since: Nov 2000
Location: Shenandoah Valley Virginia
Posts: 4,549
Likes: 0
Received 27 Likes
on
24 Posts
The rotor in the second picture has plenty of life in it. I would run it at least a couple of more days before trashing. Visually check it after each run group session. If you feel concerned, save them for spares and use new. At $30.00 each it is not a big investment in new.
05-09-2007, 09:49 PM
#7
Team Owner
run them till they look like dry mud in the desert
They look good for a few days as long as your driving not me . They are fine for a few days. Check after they cool when you come in and roll the car so crack isn't hidden behind the spoke. Better taking picture in bright light outside so they is no flash
They look good for a few days as long as your driving not me . They are fine for a few days. Check after they cool when you come in and roll the car so crack isn't hidden behind the spoke. Better taking picture in bright light outside so they is no flash
05-09-2007, 11:36 PM
#8
Team Owner
Thread Starter
Member Since: Mar 2001
Location: Virginia Beach
Posts: 25,889
Likes: 0
Received 5 Likes
on
5 Posts
CI 3-5-6-7-8 Veteran
Thanks... I'm installing the brand new ones then keeping the one full set of spares, then these as my secondary front spares.
I had the brakes fully off anyway... dumb not to put the freshest ones on the car.
I'll be running Carbotech XP12/XP10's vs. the Wilwood H's I had before so they should last longer.
I had the brakes fully off anyway... dumb not to put the freshest ones on the car.
I'll be running Carbotech XP12/XP10's vs. the Wilwood H's I had before so they should last longer.
05-10-2007, 07:04 AM
#9
Team Owner
Member Since: Sep 2003
Location: Raleigh / Rolesville NC
Posts: 43,084
Likes: 0
Received 25 Likes
on
25 Posts
Brian I would run those one more weekend. But then again I always keep a spare set too.
But if you are changing those, make these your spare rotors. After all they are seasoned
But if you are changing those, make these your spare rotors. After all they are seasoned
05-10-2007, 10:17 AM
#10
Team Owner
Thread Starter
Member Since: Mar 2001
Location: Virginia Beach
Posts: 25,889
Likes: 0
Received 5 Likes
on
5 Posts
CI 3-5-6-7-8 Veteran
So that make one full spare set and one more set of spare fronts... should be good to go for awhile
05-10-2007, 12:20 PM
#11
Race Director
I run mine till they crack the whole way through, I'd barely even call those cracks, they're more like grains or somethin....when you crack a rotor you'll know it, hell I still drove the car around normally on the street for 20-30 miles with a pulled back last week before I had time to swap them.....I just wouldn't track a cracked rotor but its driveable in a jam.
