Act 6-puck disc failure!

[MonoTalonAwd]

I've read about Act clutch disc failures on the forums but they were mostly the street disc springs popping out. About a month ago, I helped a friend to change the trans on his 92 Talon Tsi Awd and replaced the shot stock disc with a new Act 6-puck I had laying around. It was assembled with the stock pressure plate. Everything was fine afterwards except one week later, the disc seperated from the hub! :confused:

http://memimage.cardomain.net/member_images/9/web/861000-861999/861910_3.jpg
http://memimage.cardomain.net/member_images/9/web/861000-861999/861910_4.jpg
http://memimage.cardomain.net/member_images/9/web/861000-861999/861910_5.jpg

How is that possible? Seems like the rivets all let go at the same time! This was on a mostly stock dsm; intake/exhaust, 14b at 17psi.

[BOOSTERchair]

could it have something to do with the pressure plate? i dont think that 6 pucks are ment to be ran on stock pp.

chris

[MonoTalonAwd]

could it have something to do with the pressure plate? i dont think that 6 pucks are ment to be ran on stock pp.

chris

It's possible, but I assume the only "real" difference between a stock pp, an Act 2100 and 2600 pp is the clamping force. So, theorically, the stock pp would've been less harsh on the 6-puck disc.

[J J]

could it have something to do with the pressure plate? i dont think that 6 pucks are ment to be ran on stock pp.

chris


I'm running the stock PP with the 6 puck. 3 trannies and 2 engines later and still on the same clutch.

This is a great bang for the $ clutch. Paid $75 for the 6 puck from bushur and $12 for newish PP from the junkyard.

[MonoTalonAwd]

I'm running the stock PP with the 6 puck. 3 trannies and 2 engines later and still on the same clutch.

So from your experience, it's a bulletproof disc. That's what I always thought! That everything around (trans, axles, motor mounts...) would take a serious beating but the 6-puck would still be in one piece after all!

When I think about it... that's the disc I was going to put in my car! Hopefully, I didn't! :D

[OddRob]

was there any other damage? Did it happen while launching? I've been running a 6-puck for years with no issues.

[MonoTalonAwd]

was there any other damage? Did it happen while launching? I've been running a 6-puck for years with no issues.

No other damage! He was cruising in fourth (just regular driving) and then when he shifted in fifth, that's when he lost all forward momentum. At first, he thought it was the trans (another time) and had it towed to his house. After disassembly, the disc was still in the center but pieces of metal rivets were scattered inside the bellhousing. It's like if the rivets have been grinded down from rubbing on something, but what?! :confused:

You can see better quality pictures by going here:

http://www.cardomain.com/ride/861910

[Mitsuturbo]

I know a guy who was running 9's and never had that happen to the EXACT SAME kind of disc. He was getting to the point they'd slip, and he went to a 3 puck, but NEVER did the hub separate.

[MonoTalonAwd]

Seeing how the disc failed so rapidly (within a week!) and the modest amount of hp's my friend's Talon is pushing, I must conclude that the disc was a faulty unit that managed to pass inspection at Act.

Like I see, some high HP's Dsm's run the exact same disc without any troubles at all!

If you look carefully in the third pic, you can see that the eight holes where the rivets were attached aren't so round anymore! It's like if the hub was able to move back and forth in relation to the disc. Eventually, that caused the metal rivets to snap.

[slugsgomoo]

did you have all the little alignment deals in the block when you put the car back together? Since the DSM only has a few bolts that connect the engine & transmission, it uses some studs (that bolts go through) to help line up the transmission.

Most clutch failures of this type (and causing the same failure with a street disc) come from the engine & transmission being a tiny bit out of alignment.

There is a big discussion about this on tuners, I haven't looked it up on NABR for additional info.

[MonoTalonAwd]

did you have all the little alignment deals in the block when you put the car back together? Since the DSM only has a few bolts that connect the engine & transmission, it uses some studs (that bolts go through) to help line up the transmission.

Yes, we made sure every alignment pins were in there. But maybe the trans we swapped in was at fault. My friend's Talon is now running with the old one.