Glowing Red Hot Brake Rotors - JeepForum.com

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post #1 of 41 Old 04-19-2011, 04:28 PM Thread Starter
02OlllllllOTJ
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Glowing Red Hot Brake Rotors

i was leaving giant eagle in the pooring rain today and my jeep started to pull left. luckily i only live about a mile away so i just drove it home with a firm grip on the wheel. i pulled in my drive and check out the front end and my drivers side brake rotor is glowing red hot and smoking because of the rain. not to mention that nasty burning brake smell filled the air. im asuming that this is a froze caliper. my buddy told me to also check for a collapsed brake line. cant really do much of inspecting due to the rain. im really just curious if you think this has destroyed my rotor and pads? i just replaced the pads less then a year ago with ebc yellow stuff pads and centric rotors and i cant really afford to replace the pads and rotors again. im guessing they are mostly warped to hell and the pads are glazed over. anyone have this happen and have sucess with just replacing the caliper?


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post #2 of 41 Old 04-19-2011, 05:25 PM Thread Starter
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bump before it gets pushed on page 2

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post #3 of 41 Old 04-19-2011, 05:28 PM
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If you had it glowing red, you will need to replace the pads and rotor. Definatly sounds like a frozen caliper or collapsed brake line. I would replace both together to be sure, and so you only end up having to bleed the system once.

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post #4 of 41 Old 04-19-2011, 05:31 PM
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^ For reference I make my rotors glow red hot on my car fairly regularly, every track day plus on some hard canyon roads sometimes even. Nothing wrong with that. Rotors are always fine.

I had my rotors glow red on my jeep because the caliper was froze for god knows what reason. I kept the rotor and kept the pads too.

The rotor was warped for a few days and straightened out as I braked very hard doing some hard break tests hoping it might magically straighten and it did.
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post #5 of 41 Old 04-19-2011, 05:38 PM
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Maybe there too thin, rotors shouldn't be glowing red regularly.

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post #6 of 41 Old 04-19-2011, 05:40 PM
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Quote:
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Maybe there too thin, rotors shouldn't be glowing red regularly.
Ehh it's prettttty common on the race track. Have a look at professional racing, they're all glowing commonly all the time from corner to corner.

Edit> Ferrari FXX (suped up Ferrari Enzo, the fastest car Ferrari has to date) http://www.teamspeed.com/forums/attachments/supercars/36446d1257538982-glowing-rotors-thread-sick-pics-finalis-20081108-201838.jpg

They don't glow the whole way around the track but they glow in some areas pretty hot. It's fine and dandy I get a little brake fade but it's not bad even when it's glowing. For daily driving they'd never glow of course. I'm just saying that glow doesn't instantly mean the rotor is ruined.

Here's what I drive. (Honda S2000) http://20832.com/images/desktop/Dubai_Maeder_1280x1024.jpg
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post #7 of 41 Old 04-19-2011, 05:40 PM
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I'd replace them, but you could always just drive around and see if it feels abnormal. Inspect of course, too.

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post #8 of 41 Old 04-19-2011, 05:44 PM Thread Starter
02OlllllllOTJ
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i guess i will just replace the calipers for now. if the rotor is warped ill replace it after i know for sure.

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post #9 of 41 Old 04-19-2011, 05:46 PM
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^ Are you sure you can't fix the caliper? Mine were fixable. Mine didn't stay frozen I was able to free them up and they're fine as far as I can feel now.
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post #10 of 41 Old 04-19-2011, 06:12 PM Thread Starter
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it may be fixable but they are fairly cheap so i think i will just replace both. do the unit bearings too

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post #11 of 41 Old 04-19-2011, 09:08 PM
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When you replace your brake pads, did you grease the calipers bolts? If the calipers can't slide freely on the bolts, they won't release from the rotor, hence hot rotors.
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post #12 of 41 Old 04-19-2011, 09:28 PM
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Quote:
Originally Posted by 05TurboS2K View Post
^ For reference I make my rotors glow red hot on my car fairly regularly, every track day plus on some hard canyon roads sometimes even. Nothing wrong with that. Rotors are always fine.

I had my rotors glow red on my jeep because the caliper was froze for god knows what reason. I kept the rotor and kept the pads too.

The rotor was warped for a few days and straightened out as I braked very hard doing some hard break tests hoping it might magically straighten and it did.
A track day is different than what has happened here. At the track, the rotor has time to properly cool through airflow in the vents. The OP drove his jeep with the caliper locked up or other problem, got the rotor red hot and parked it. The lack of the proper cooling cycle like this will cause blueing and glazing of the rotor. This creates hard spots on the rotor which will not create the proper friction to stop the vehicle correctly. It would be an extremely good idea for him to replace the rotor and pads to retain full stopping ability.

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post #13 of 41 Old 04-20-2011, 01:12 AM
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maybe u can use magic to straighten out your rotors if there warped, seems like it worked fine for 05turbos2k?

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post #14 of 41 Old 04-20-2011, 01:31 AM
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Brake rotors don't actually get crooked when they get warped.

Magic didn't straighten then, I would be willing to wager it was pad buildup on the 05turbos2k's rotor the whole time that made it feel warped.
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post #15 of 41 Old 04-20-2011, 08:20 AM
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