I have no idea how this happend. I donot launch my car at all, since it still has n/a tranny and rear end. The clutch disintegrated in the highway and I was only at 18psi... BTW this is on a t70... BTW I was in fourth.

 

is it a race clutch ?.. and u drive it daily?... and u say u dont launch ur car? if this is all true its because u drove a race clutch lightly on the street ... well chew one to peices in a couple months

 

No, I dont launch the car because of the rear end and tranny. It was an old school bronze clutch with ACT pressure plate... The clutch is old, but has less than 1000 miles on it...

 

maby the pressure plate was to much for it ... and on the highway the eningne creates alot of cyntrifical force on the disc .... could have caused it to just poof under stress

 

I have no idea, but it definately wasnt from having 2 much torque... Im using a sprung setup now... and organic. The bronze wore the hell outta my flywheel.

 

Hmmm...you sure it's an ACT?
The disc doesn't look like an ACT disc with all those slots cut into it?


-Ted

 

The PP was act. not the clutch... the clutch was a bronze one that I bought for 200.

 

OUCH!!!!!! $200.00.......

 

wow, thats a neat break.....

the worst I ever had was all of the friction material being torn from the clutch disc and ending up as either motlen red stuff blowing down the road behind me....or twisted chunks of metal/rivets laying in the bellhousing during disassembly...

were the rivets sheard right in half or is there enough left to tell? because that would be nuts. I would think they would have had to have been somewhat loose in there, slowly getting strechted before they ripped off like that...

any driveability issues right before it blew? shuddering during engagment?slippage?

 

do you have a warranty? for $200 you better.

 

Yea, the rivets were sheered right off. The holes for the rivets were stretched out a bit. And no, there were no symptoms before hand. The car drove fine and everything... Once I was in fourth I WOT and when I shifted to 5th I got this really loud clunk.

 

well if your gonna have premature failure itll happen in one of those two gears...being the tallest gears.....

thats defienetly wierd....might it have been a mis-marked part perhaps...you say the PP is ACT and the friction plate is something else were they new? if not I would say whomever you purchased them from thought they had something they didn't because that friction plate is obvisouly not built to withstand much above stock HP levels

 

WEll, the clutch was chosen by me. I switched because I hated the way those organic clutches smelled after a few highway runs. I never have had a really "serious" clutch set in there, because I hate the rattle and the heavy *** clutch pedal. And if the PP wasnt up to the task, all I woulda had was slippage.

 

true true

perhaps the friction plate wasn't up to snuff as far as holding capacity, becuase your PP MUST have been in order to hold the outer edge in place while the input shaft ripped the center off of it.

Long and the short of it - beats me how it failed.....maybe one of Martha Stewart's seatshops put that baby together

 

From the looks of it, it appears to be a parts defect. A properly constructed disk should never sheer the rivets like that. Now for the sake of clarity, lets review the components of a clutch system. What most people call the pressure plate is actually 3 major components. The stamping is called the Cover. Inside the cover are the Spring. The spring pushes on the Pressure Plate. Sandwiched between the pressure plate and the flywheel is the clutch Disk.

Andrew

 

Who made the clutch disc?
I would call it a PIECE OF ****.


-Ted

 

Well, I agree with you...

 

Sounds like an abrubt change of speed on the clutches part, which sounds pretty simple to me. WOT in 4th, quick shift into 5th before the rpms drop, clutch having to do the matching when it's probably already heated up from the 4th run, makes sense to me.

 

I wasnt using the clutch pedal... but my guess, is that the clutch was a POS and it was its time to go... Thanks for the input..

 

So you just drove 5th on home with no clutch pedal?

 

probably rev matched his way back....must've had fun at red lights eh?

edit: wait wait wait - had a brain fart, wouldn't have gone ANYWHERE with that clutch disk in there....she would have coasted to a clanking stop several hundred yards ahead of whereever that POS blew

 

could it have been because he was at WOT and 18PSI of boost? I mean even in 4th thats quite a bit of power going through even an upgraded N/A clutch isn't it?

 

well, I would believe it's the fact that he was WOT in 4th and hard shifted into 5th with no clutch usage at all, if that's the case it's pretty obvious why it broke.

 

heh... come on, think about how fast he mustve been going.. it doesnt say he really rolled out 4th, but WOT -> speedshift 5th... its implied.

 

Actually, I rolled through 6 blocks on the express way.. The car was un driveable. I had to tow it back. And I didnt speed shift to 5th, since I have to wait till the revs go down a bit in order for it to slide into 5th.. But yes, 18lbs is abit more 400hp...