Anyone ever see a clutch fail like this?

[Maxhouse97]

Did not expect to see this … material actually not that worn down compared to new, but it separated from the disc. Does this indicate the root cause for the failure?

[Maxhouse97]

Large

[Maxhouse97]

Larger pic

[lemoose]

Mine did partially but not completely

[sapote]

I think it's a bad construction of rivets on the friction material. They should be glued to the metal core like brake pads.

[PetrolM3]

Not the first time I see this though it is rare. Looks worn enough for the rivets to also get scrubbed and let go. I’m assuming the failure is a result of abuse, major slippage and high heat.. not just high mileage. Even if this car has half a million miles, the previous owner needs to learn driving a manual because clearly this clutch wasn’t treated nicely. Plenty of track cars with high miles don’t have clutches looking this way when removed.

[bigjae46]

I'm not sure this would even make it into the top 10...lol

[F1Dryvr]

Thats exactly what mine did, split into two discs and the rivets (or whatever) pulled through, plus a mountain of clutch dust. I still think it was down to not knowing that the SAC needed to be reset before reinstalling. Theres a tool and a procedure to do it, that id never heard about. It failed on track. I suppose now that i think of it it could just be that the clutches(factory) are now 20 plus years old.

[bigjae46]

Thats exactly what mine did, split into two discs and the rivets (or whatever) pulled through, plus a mountain of clutch dust. I still think it was down to not knowing that the SAC needed to be reset before reinstalling. Theres a tool and a procedure to do it, that id never heard about. It failed on track. I suppose now that i think of it it could just be that the clutches(factory) are now 20 plus years old.

I'm pretty sure if the clutch disenages then the SAC is reset. Then it will self-adjust once you start driving it.

If the SAC is not reset, the clutch won't disengage.

[F1Dryvr]

Fair enough, i really dont know how that works, but i saw that procedure and figured i had the failure bc of not having done it. Thats how it usually goes for me! Non issue now w/ tilton in there, very happy with it so far.

[George Hill]

I've seen this type of failure a few times, not sure the root cause though.

Thats exactly what mine did, split into two discs and the rivets (or whatever) pulled through, plus a mountain of clutch dust. I still think it was down to not knowing that the SAC needed to be reset before reinstalling. Theres a tool and a procedure to do it, that id never heard about. It failed on track. I suppose now that i think of it it could just be that the clutches(factory) are now 20 plus years old.

Lots and lots of clutches have gone back in without being reset, I don't believe that to be the cause here.