Very very scary disc damage!!

[brakedust]

Changed my front discs today as I thought they were very badly warped.... Removed the drivers side disc and it looked like this!!!!!!



How scary is that?! lucky I got them changed, anyone seen damage like that before?

[GreenV8S]

The only time I've seen that was on a manky old Sierra where the vanes had almost corroded through (and the disc did eventually collapse. Good job you spotted it in time, could have been very nasty.

[spitfire4v8]

^^^ Ive seen it on an S series (so sierra based brakes as Green has seen too) and the two halfs of the disc had completely separated. scary indeed!

[brakedust]

I think if i had driven for much longer they would have come apart, shocking that they should do that, from the side there wasn't much wear on them! I've replaced them with some solid (rather than bell and disc) discs with cooling holes

[Gazzab]

The non-bell TVR Tuscan S discs arent well thought of. They can crack.

[Jonnie B]

Thinking i might have to change mine soon, out of interest were did you get your new ones from and how much.

John

[brakedust]

Gazzab said:

The non-bell TVR Tuscan S discs arent well thought of. They can crack.

Well these haven't been that great for cracking either, I'll keep an eye on them though

[eddie1980]

I have seen the halfs separate on a XR4x4 Sierra, but the vibration just before it happened was so horrific only insane people would have not changed them. Unfortunately my dad was pretty good at not being sane.

Edited by eddie1980 on Sunday 31st May 23:00

[Boosted LS1]

Judging by the rust on them I'd say they were pretty old. How long should a disc last? They've probably been like that for a while, I agree it's scarey though.

[brakedust]

Boosted LS1 said:

Judging by the rust on them I'd say they were pretty old. How long should a disc last? They've probably been like that for a while, I agree it's scarey though.

Only started to judder a few weeks back, just thought they were warped

[Erich Stahler]

brakedust said:

Changed my front discs today as I thought they were very badly warped.... Removed the drivers side disc and it looked like this!!!!!!



How scary is that?! lucky I got them changed, anyone seen damage like that before?

Cant see the flat faces, are they drilled disks? I know people seem to have this kind of corrosion problem mostly with the drilled variety.

[Gazzab]

Eric - you can just about see that these are the non drilled type.

[itsallyellow]

Mine had done this when i changed them last year. Thought i had a warped disc also.

Mike

[dean_ratpac]

GreenV8S said:

The only time I've seen that was on a manky old Sierra where the vanes had almost corroded through (and the disc did eventually collapse. Good job you spotted it in time, could have been very nasty.

happened on my last set... kinda says the theory they don't warp, they crack.

rears did this too.... best to check fellas

[dean_ratpac]

Brakedust: what are you doing with those bells if you;re going with one piece disks, in desperate need of some!

[brakedust]

dean_ratpac said:

Brakedust: what are you doing with those bells if you;re going with one piece disks, in desperate need of some!

You can borrow them if you want to get some made up fella?