CamaroUK

I've just taken delivery of a complete LS1 rear axle as I intend on doing the LT1 to LS1 rear brake swap, I was only counting on the mounting hardware assuming I'd have to get new rotors and pads but I was quite chuffed to find all the pads and rotors were almost brand new.
I don't know the donor cars history but it was a 2001 LS1 A4 and is currently in a salvage yard, the car has had a fair bit taken off and what with the way the scrap cars get shoved about with forklifts etc. it was difficult to see the original damage. I only had a few pics of the car to go by.

On closer inspection I found this worrying sight around the E-brake drum section of the rotor:
(the cracked section is actually leaning outwards)





Is this number any indication of the manufacturer of the rotor, aftermarket or otherwise?



I'm going to buy a replacement rotor, but I was wondering if anyone has seen anything like this before happen to a nearly new rotor? Its as if the parking brake cracked it.

SparkyJJO

iTrader: (11)

It's seen better days. I wouldn't fret it, it possibly could have gotten damaged from whatever accident it was in, or by the crew moving stuff around, or who knows what. Just get new rotors and move on. I'd never use the rotors that came on a junkyard axle anyway, usually too much rust and crap and unknowns with them (warpage, cracks like that, etc).

There is no way the parking brake can apply enough force to bust the rotor.

why87

More than likely rust from sitting in the 'yard

Stippy17

iTrader: (5)

Replacement rotors aren't expensive. Just replace both when you swap the axle into your car. No reason to skimp on them after taking the time and money to do the swap. I always replace items like that after they have sat in a junkyard.

To answer your question the rotor either cracked in the accident, or the yard dropped the axle assembly hard. No big deal either way.

HumanNipple

iTrader: (2)

Just grab some ACDelco's on Amazon, they were only like $40 each.