Heat Cracks in rotors

Calcanuck · 03-09-2019, 01:55 PM

How bad do these heat cracks look? Rotors are 33.25mm thick. Trying to determine if I should replace them or maybe have them lightly turned.

They are the 6 piston brembo's.

Thanks

Alpha1BC · 03-09-2019, 02:22 PM

Looks like pictures weren't attached?

Calcanuck · 03-09-2019, 03:26 PM

Quote:

Originally Posted by Alpha1BC

Looks like pictures weren't attached?

Oops. Uploaded now

Stephen12ZL1 · 03-09-2019, 03:57 PM

not bad...keep on going with those for a while.

2010REDSS · 03-09-2019, 07:07 PM

Quote:

Originally Posted by Stephen12ZL1

not bad...keep on going with those for a while.

Yep.....not bad at all.

Just some heat checking at this point...watch for true "cracks" and particularly anything that starts making its way to the outside edge.

I'd only turn them if they appear to be giving you any pulsation or shudder like they are warped.

Calcanuck · 03-09-2019, 09:49 PM

Quote:

Originally Posted by 2010REDSS

Yep.....not bad at all.

Just some heat checking at this point...watch for true "cracks" and particularly anything that starts making its way to the outside edge.

I'd only turn them if they appear to be giving you any pulsation or shudder like they are warped.

Thanks for the info!

carguy55 · 03-11-2019, 05:36 PM

Not too bad yet. My OEM 1LE rotors looked about the same after 7 track day. Replacement thickness is 32mm or if you get larger cracks or they go to the edge. By the way I saw a big difference in price between the slotted 6 piston kit rotors and the OEM 1LE rotors. The other option is the slotted DBA 5000 rings but you have to transfer the hat which is no big deal.

2010REDSS · 03-12-2019, 09:37 AM

Or....there is always this option....

I'll have some more details on the AP Racing Brakes kits in a new thread, after I get them on the track for a more thorough review vs. OEM. Later in March at Road Atlanta!

Ryephile · 03-12-2019, 10:01 AM

Quote:

Originally Posted by Calcanuck

How bad do these heat cracks look? Rotors are 33.25mm thick. Trying to determine if I should replace them or maybe have them lightly turned.

They are the 6 piston brembo's.

Thanks

They're fine, and you have plenty of life left in them. The rule of thumb is heat checking is normal and acceptable until you can catch a fingernail on the cracks. Then it's time to replace.

NickyRacerBoy · 03-12-2019, 09:33 PM

Quote:

Originally Posted by 2010REDSS

Or....there is always this option....

I'll have some more details on the AP Racing Brakes kits in a new thread, after I get them on the track for a more thorough review vs. OEM. Later in March at Road Atlanta!

Yummy!!!! Love AP

Jimbeau11 · 03-13-2019, 01:48 PM

That's just heat checking. Run 'em til they crack.

TrackClub · 03-13-2019, 02:23 PM

Ditto Norm's and Jim's comments. Well maybe stop just before they crack

NB Love APs too, but frankly OEMs are a great - top shelf - product for the money. But if somebody has a phat wallet then AP Enduros are the way too go. Their Sprint size kits dont offer much in a way of an upgrade imo.

NickyRacerBoy · 03-15-2019, 08:16 AM

Just FYI...looks like very few DBA rings in the states! Wont be till June before new batches arrive.

TrackClub · 03-15-2019, 09:32 AM

Quote:

Originally Posted by NickyRacerBoy

Just FYI...looks like very few DBA rings in the states! Wont be till June before new batches arrive.

Proly because of ongoing USA vs China trade discussions.

03-09-2019, 01:55 PM	#1
Calcanuck Drives: 2017 Hyper Blue 2SS Join Date: Mar 2017 Location: East Bay, California Posts: 173	Heat Cracks in rotors How bad do these heat cracks look? Rotors are 33.25mm thick. Trying to determine if I should replace them or maybe have them lightly turned. They are the 6 piston brembo's. Thanks Attached Images __________________ Hyper Blue 2SS, 6MT, NPP, 6 piston Brembo, 1LE suspensions upgrade, ZL1 Seats, Wheels & Tires Last edited by Calcanuck; 03-09-2019 at 03:25 PM.

03-09-2019, 02:22 PM	#2
Alpha1BC Drives: 2017 1SS 1LE Join Date: Jun 2016 Location: Detroit, MI Posts: 1,001	Looks like pictures weren't attached? __________________ 2017 SS 1LE.

03-09-2019, 03:57 PM	#4
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,808	not bad...keep on going with those for a while. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

03-12-2019, 09:37 AM	#8
2010REDSS Drives: 2018 ZL1 1LE Join Date: Feb 2009 Location: Bettendorf, Iowa Posts: 617	Or....there is always this option.... I'll have some more details on the AP Racing Brakes kits in a new thread, after I get them on the track for a more thorough review vs. OEM. Later in March at Road Atlanta! Attached Images __________________ 2018 ZL1 1LE "RAZECAR" 2016 2SS Convertible "NOTOPSS" (Sold) 2015 Z/28 #306 "ITZFAST" 2010 2SS Coupe "FASSTER" (Sold) 2002 SS/RS "02FASST" (Sold) 2007 Factory Five Racing GTM "REDBLUR" (Sold) "There are two kinds of cars. Red....and everything else!"

03-11-2019, 05:36 PM	#7
carguy55 Drives: 2018 1SS 1LE Join Date: Feb 2017 Location: Austin, Texas Posts: 1,488 View My Garage	Not too bad yet. My OEM 1LE rotors looked about the same after 7 track day. Replacement thickness is 32mm or if you get larger cracks or they go to the edge. By the way I saw a big difference in price between the slotted 6 piston kit rotors and the OEM 1LE rotors. The other option is the slotted DBA 5000 rings but you have to transfer the hat which is no big deal.

03-13-2019, 01:48 PM	#11
Jimbeau11 Drives: '18 Black SS 1LE; '01 Corvette Z06 Join Date: Nov 2018 Location: Lehigh Valley, PA Posts: 119	That's just heat checking. Run 'em til they crack.

03-13-2019, 02:23 PM	#12
TrackClub Drives: 2020 SS 1LE (previous: 2017 SS 1LE) Join Date: Mar 2012 Location: Canada, eh! Posts: 5,091	Ditto Norm's and Jim's comments. Well maybe stop just before they crack NB Love APs too, but frankly OEMs are a great - top shelf - product for the money. But if somebody has a phat wallet then AP Enduros are the way too go. Their Sprint size kits dont offer much in a way of an upgrade imo.

03-15-2019, 08:16 AM	#13
NickyRacerBoy Drives: 1LE Join Date: Sep 2017 Location: East Coast Posts: 1,473	Just FYI...looks like very few DBA rings in the states! Wont be till June before new batches arrive.

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