Hi all, just wondering if anybody else has seen an AP Racing clutch do this before. I'm not running any serious power only about 300 but i thought they were rated a lot higher than that.

 

An eBay copy perhaps?

 

Only ever seen exedy copies on ebay plus ive had it for 2 years and got it with the lightened flywheel too {exedy stamp with apracing stamp on pressure plate)????????????

 

cant you glue it back on, its snapped clean hasnt it

 

I am not gonna rise to what must be a joke

 

wow never seen that before in the process of buying a helix clutch wont be buying it of the bay though !

 

What the hell did you do to it?

Few things I can think of:

5th gear+full throttle+6000rpm+side step clutch. (well, someone had to say it ).

Gearbox locked up at 6000rpm or at 60mph (bits of the diff are still on the M5 somewhere ).

Uneven pressure caused by some problem with the release/alignment, so the disc is at an angle to the cover plate when engaging/disengaging which has caused the straps sheer off due to fatigue.

Someone when fitting the engine/gearbox mated them at an extreme angle and bent/fractured the drive straps, which over time would fail from fatigue (the bits that sheared).

Or its a Fake.

 

oh damn

 

Nope none of the above!!! The only thing I can think of was I parked car over snow for a couple of hours and when I got in and drove it off it was slightly jerky. Got steadily worse over the next days driving (wasn't gunning it) Pulled away from lights normally and it just went

NONE OF IT MAKES SENSE TO ME!!!!!!!!!!!!!

 

pretty sure daz davies has done this to an ap or two

 

Erm. A release fault (i.e worn spigot bush/bearing) would not instantly kill it...if its been flexing the drive plates/straps over say, six month it'll eventually say "I've had enough" and it'll fail at any random point when you pull away.

Same goes for it being damaged during installation.

The drive plates/straps which connect the friction material to the centre of the clutch disc are barely 1mm thick, they are fine for rotational (torsional) stress but they don't like being unevenly or excessively flexed in a lateral direction and will fatigue over time leading to an eventual failure.

Also a fake would use poor quality steel not up to the job, and not be tolerant to heat cycling.

 

Seen that quite a few times on AP clutches tbh

 

^ Have seen more than a few occasions of an AP clutch having ripped it's centre out:


(full post: https://www.scoobynet.com/showpost.p...53&postcount=1)

 

Exedy Racing Organic is the most reliable and cost effective IMHO for up to 400bhp