02-02-2021, 02:20 PM | #1 |
ITCRNRS
Drives: 2018 ZL1 1LE Join Date: Jun 2012
Location: Wichita KS
Posts: 1,575
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ZL1 1LE Front Brake Rotor Turn vs. Replace
I need to address my warped front brake rotors before this season starts, I am hoping to have more air flow to the front brakes with the addition of the SS 1LE larger track brake ducts that I installed at the end of last season (after my rotors were already warped).
How many guys have turned or machined their front rotors and had good results. My only worry is the reduced rotor thickness causing it to warp again, or just replaced them with OEM rotors or aftermarket? Ideally I would just put new rotor rings on the factory hats and call it a day but that doesn't look to be a option. Thanks.
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2018 ZL1 1LE Ordered 6/29/17 Built 11/6/17 Delivered 12/7/17, Summit White, PDR, NAV, https://www.youtube.com/c/tylerpotter
SOLD: 2014 Summit White 1LE 2SS/RS, Recaros, NPP, NAV, KONI Yellow's SOLD: 2012 Black 2LT/RS, Fully 1LE swapped, Brembo swap |
02-02-2021, 04:11 PM | #2 |
Drives: 2017 SS 1LE Join Date: Jan 2018
Location: Southern NH
Posts: 138
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Actually warped and not pad deposits? Highly doubt they're actually warped. If they're still over min thickness then yeah you can turn them and they'll be fine.
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02-02-2021, 05:01 PM | #3 |
Drives: 2022 1SS 1LE A10 BCD WCT+PDR Join Date: Mar 2008
Location: Johnstown, PA
Posts: 3,200
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Pretty sure they just have uneven pad transfer as samr350 said. Do they look like there is uneven deposits? Blotchy, inconsistent color?
I’ve used this on various rotors and it works. You’ll have to remove the rotors. It’s worth the try, if it is uneven transfer layer then this will get you back down to a fresh rotor surface. But you’ll have to solve the overheating that is causing the poor transfer. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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02-02-2021, 06:05 PM | #4 |
Drives: 2018 ZLE Join Date: Jul 2014
Location: Ontario, Canada
Posts: 580
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Do you mean base SS track deflectors?
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02-02-2021, 06:43 PM | #5 |
Drives: 2022 1SS 1LE A10 BCD WCT+PDR Join Date: Mar 2008
Location: Johnstown, PA
Posts: 3,200
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I agree, the SS (non 1LE) deflectors are bigger than the SS 1LE deflectors.
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2022 1SS 1LE A10 BCD WCT+PDR2014 1SS 1LE NPP RECARO SIM-SOLD1995 Z28 M6 GSC PGM-SOLD1975 NOVA COUPE 300HP 350 TH350 FLASH RED-SOLD
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02-03-2021, 08:53 AM | #6 |
Drives: 2019 ZLE Join Date: Jul 2020
Location: Dallas
Posts: 136
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buy my used set of Hawk dtc70, install and run for a few days on the street and your rotors will be squeaky clean. Reinstall your OEM pad and bed them in. Problemo solved.
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02-03-2021, 10:50 AM | #7 |
ITCRNRS
Drives: 2018 ZL1 1LE Join Date: Jun 2012
Location: Wichita KS
Posts: 1,575
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I have this big tupperware that drags on the ground during braking now.
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2018 ZL1 1LE Ordered 6/29/17 Built 11/6/17 Delivered 12/7/17, Summit White, PDR, NAV, https://www.youtube.com/c/tylerpotter
SOLD: 2014 Summit White 1LE 2SS/RS, Recaros, NPP, NAV, KONI Yellow's SOLD: 2012 Black 2LT/RS, Fully 1LE swapped, Brembo swap |
02-03-2021, 10:52 AM | #8 |
ITCRNRS
Drives: 2018 ZL1 1LE Join Date: Jun 2012
Location: Wichita KS
Posts: 1,575
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I guess I was under the impression that pad deposit vibration would only start to show itself once the rotors were warm or hot vs. a normal warped rotor would vibrate right off the bat cold?
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2018 ZL1 1LE Ordered 6/29/17 Built 11/6/17 Delivered 12/7/17, Summit White, PDR, NAV, https://www.youtube.com/c/tylerpotter
SOLD: 2014 Summit White 1LE 2SS/RS, Recaros, NPP, NAV, KONI Yellow's SOLD: 2012 Black 2LT/RS, Fully 1LE swapped, Brembo swap |
02-03-2021, 10:52 AM | #9 | |
ITCRNRS
Drives: 2018 ZL1 1LE Join Date: Jun 2012
Location: Wichita KS
Posts: 1,575
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Quote:
__________________
2018 ZL1 1LE Ordered 6/29/17 Built 11/6/17 Delivered 12/7/17, Summit White, PDR, NAV, https://www.youtube.com/c/tylerpotter
SOLD: 2014 Summit White 1LE 2SS/RS, Recaros, NPP, NAV, KONI Yellow's SOLD: 2012 Black 2LT/RS, Fully 1LE swapped, Brembo swap |
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02-03-2021, 11:46 AM | #10 |
Drives: 2019 ZLE Join Date: Jul 2020
Location: Dallas
Posts: 136
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in my experience, once you have pad deposits, it doesn't matter if they are hot or cold. End a track day with deposits and vibration, let the car sit and completely cool down, then drive off - the vibration will still exist. You have to get the deposit off the rotors. If you are using OEM, it will be very difficult to do that without some intervention. Either take off the rotors and clean them by hand, or put on a more aggressive pad and let them slowly scrape off the deposit. A track pad is very aggressive when cold and will clean the rotor quickly. And no scrubbing or removing the rotor.
This is my process 1. Start with clean rotors and use OEM pads for street use. 2. Day or so before a track event I put in track pads. A couple days worth of street driving will clean off all the OEM pad material 3. Bed track pads. 4. Tear it up at the track 5. Keep track pads on for a couple days after an event. When they are cold, they will self clean the rotor of any deposits 6. Swap back to OEM. Bed if you want to. I don't 7. Next track event - repeat. |
02-03-2021, 11:51 AM | #11 |
Drives: 2019 ZLE Join Date: Jul 2020
Location: Dallas
Posts: 136
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If you are committed to using OEM pads for both street and track I see two options
1. clean rotors by hand after every event 2. Insert an aggressive pad, drive a couple days, return to OEM. Think of the aggressive set of pads as a tool. Couple hundred bucks and it will last you a lifetime. And in a pinch, you could use them for a track day. Or a back-up set of pads if your OEM are shot. |
02-03-2021, 11:59 AM | #12 | |
Drives: 2022 1SS 1LE A10 BCD WCT+PDR Join Date: Mar 2008
Location: Johnstown, PA
Posts: 3,200
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Quote:
I use the course grit hone.
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02-03-2021, 12:01 PM | #13 |
Drives: 2022 1SS 1LE A10 BCD WCT+PDR Join Date: Mar 2008
Location: Johnstown, PA
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I wonder if this depends on the severity of the unevenness. Do your rotors have the blotchy spots on them?
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02-03-2021, 12:02 PM | #14 |
Drives: 2022 1SS 1LE A10 BCD WCT+PDR Join Date: Mar 2008
Location: Johnstown, PA
Posts: 3,200
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2022 1SS 1LE A10 BCD WCT+PDR2014 1SS 1LE NPP RECARO SIM-SOLD1995 Z28 M6 GSC PGM-SOLD1975 NOVA COUPE 300HP 350 TH350 FLASH RED-SOLD
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