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ACT solid street disk. Minimal feedback on the web. Anyone?

Scott Y

Well-known member
Joined
May 8, 2001
Messages
482
Location
Lakewood, Colorado, USA
I am contemplating a 2900 w/solid street disk. I ran a 2600 + organic disk for over 2 years of 12sec passes plus thousands of street miles. It was a great clutch, but I want to be able to shift faster at over 7K or NLTS to post some low 12s, and I thought that this combo may work for me. No twins, no pucks, I drive my 5 year old daughter around in the car, sometimes it's even the snowmobile (our only awd car).
I need a Jacks Transmission and a clutch this year, just gotta save some more pennies.
 

464/2K

Well-known member
Joined
Oct 21, 2003
Messages
4,671
Location
Denver,Co
I'm going to be running the same setup (2900+unsprung 4puck). Well see how well it hold up.
 

Brianawd

Well-known member
Joined
Apr 18, 2005
Messages
2,117
Location
Portland OR,
Quote:
I want to be able to shift faster at over 7K or NLTS to post some low 12s



Good luck with that. You will be lucky if you can shift at any thing past 6,500rpm and not have the clutch drag.







Run as faraway from ACT as you can.
 
Last edited:

Scott Y

Well-known member
Joined
May 8, 2001
Messages
482
Location
Lakewood, Colorado, USA
I've had great luck with the 2600, I could hotlap for 5 or 6 runs for a few test-n-tunes per year plus street playing and it worked like an absolute champ. It shifted pretty well at 7K, but I found a couple of tenths by shifting at 7500 and that's where I found the shifting fighting me. I discovered this at the end of a few years of faithful service, with the clutch fork slowly moving towards the driver's side of the bellhousing in relation to the slave cylinder.

I have no problem getting another ACT clutch, just thought the solid street disk might be lighter than the sprung version and help a bit at higher rpm.
 

464/2K

Well-known member
Joined
Oct 21, 2003
Messages
4,671
Location
Denver,Co
Scott see my thread a few topics down.... That is one of the many reasons why to steer clear. You most likely have an old style act which is why it has held up.
 

1badgvr4

Well-known member
Joined
Jul 2, 2006
Messages
1,242
Location
georgia
Why do people think twin discs are hard to drive? with a 2g slave its nicer to drive than my old 2900 setup by far.
 
Last edited:

belize1334

Well-known member
Joined
Nov 18, 2003
Messages
3,316
Location
Bozeman, MT
An unsprung puck will not drive differently from a sprung puck. What it will do is communicate more driveline noise and will also contribute to faster wear of the transmission input shaft splines. The main reason to prefer unsprung is that ACT disks have a habit of popping springs which will cost you some down-time and the cost of a new disk.
 

donniekak

Well-known member
Joined
Jan 1, 2009
Messages
748
Location
surprise az
Not only do the sprung act's pop springs, but i have an unsprung act disk in my garage that stripped the splines off the disk. ACT=garbage
 
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