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04-11-2014, 09:07 AM
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#1 |
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Registered User
Join Date: Apr 2012
Location: Covington, GA
Posts: 386
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Groved brake rotors - how to tell factory groves from just worn out?
I had a bit of noise from my right front wheel, so I took a look at the brake, and sure enough, there's a grove about 1/4" wide and 1/4" deep worn into the rotor. I figured it was shot and it's time to order new front rotors, but then I saw on the forum that some OEM rotors had groves from the factory. Any tips for how to tell if this is the case here, or if it's just wear and tear on the rotor?
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Matt Cramer 1972 Chevy C10 - 4.8 swap, long bed, and maybe one dent free body panel somewhere - SOLD 4.8 LS build thread |
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04-11-2014, 09:41 AM
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#2 |
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Registered User
Join Date: Dec 2009
Location: Atlanta, Ga.
Posts: 1,050
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Re: Groved brake rotors - how to tell factory groves from just worn out?
My 68 has that groove in them, I think there is a min. thickness that you check, but i'm not sure what it is.
Maybe some one will post what it is?
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I don't think we get smarter as we get older. We just run out of Stupid things to do. |
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04-11-2014, 10:26 AM
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#3 |
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Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: Groved brake rotors - how to tell factory groves from just worn out?
The factory groove should be a V groove, not flat bottom groove. The idea was that when the rotor was turned for smoothness and trueness, if a line was still there, the rotor was good. No line one or the other side, the rotor was scrapped.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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04-11-2014, 10:32 AM
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#4 |
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Senior Member
 
Join Date: Nov 2001
Location: Rapid City, SD
Posts: 2,281
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Re: Groved brake rotors - how to tell factory groves from just worn out?
Can you post a pic of the rotor?
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My Trucks: 1967 Chevrolet Short Wide Box 327 TH350 9" w/3.90 gears paint will be White - Current Project 1967 Chevrolet Custom LWB 283 TH400 3.73 Posi, no-AC, no-PS, no-PB, bench-seat, small-window - mostly orig driver 1967 Chevrolet CST LWB originally a 327 TH400 3.73 Posi AC PS PB, had Buddy Buckets, Small Window - parts truck 1967 Chevrolet CST LWB, 283 MT 3.73 had Buddy Buckets, Panoramic Window - parts truck 2001 Chevrolet 3500 2WD Crew Cab Dually 8.1L Allison White |
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04-11-2014, 01:34 PM
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#5 | |
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Registered User
Join Date: Apr 2012
Location: Covington, GA
Posts: 386
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Re: Groved brake rotors - how to tell factory groves from just worn out?
Quote:
Just realized my misspelling in the title. No, there's no apple trees growing out of the rotors. 
__________________
Matt Cramer 1972 Chevy C10 - 4.8 swap, long bed, and maybe one dent free body panel somewhere - SOLD 4.8 LS build thread |
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