Welcome to the SR20 Community Forum - The Dash.
Register
SR20 forum logo

Thread: Sprung vs Unsprung clutches

+ Reply To Thread
Posts: 31-40 of 60
2009-06-14 19:45:56
#31
Sprung vs. Unsprung

Which is better, depends on usage. For any performance application I always recommend un-sprung. Would you want a one piece hammer or a three piece hammer connected by springs? If you want something fail safe then unsprung is the way to go. The reason why there are springs in the hub is not to prevent chatter. Chatter is a engagement property and is mostly dictated by the friction material used. The springs in the clutch disc prevent crank vibrations (piston engines have jerky rotational motion due to combustion) from entering the transmission. This is the principal behind sprung hubs. In practice I have yet to see any ill effects of running un-sprung hubs. I've taken apart a few transmissions and have not noticed anything unusual. It's not like I've opened up a tranny and say look Bob, this is what happens when you run a unsprung disc. I just haven't found any signs of bad effects. Now if you want your tranny to last 200-300k miles then I would choose to run a sprung disc. If not the lighter un-sprung disc is my choice.


Source
2009-06-14 20:13:41
#32
I've had both on my swift I would say sprung ... Unsprung is harsh and hell and rough on the tranny
2009-06-15 11:18:50
#33
The only problem here is that whatever disk someone has in there car they will say is the best. I had my car sense 1994 and used many different clutches. They both work good and could handle alot of power once built properly. Just don't buy a cheap clutch and you should be happy with whatever you choose. I myself like the sprung better but that's just me.
2009-06-15 14:04:24
#34
I have an ACT sprung 6 puck and a HD pp. All in all if I want to let the clutch out and be easy on it I can. BUT if I want to rev it up a little and get on it that baby grabs very well. Sometimes I spin the tires on the streets just by accident and I get those looks like wtf, but it has always been great in hard driving conditions as well as down shifting.
2009-06-15 22:40:20
#35
I don't require an unsprung clutch, and maybe it is more inconvenient at times but it was on the car when I got it and now I love how tight and short it feels and wouldn't want to go back to a normal clutch.
2009-07-12 21:43:32
#36
So this sintered iron, solid hub clutch that I bought is smoothe. It is a little bit noisy when it warms up. Sounds like I am crushing baby mice when I let the clutch out. Sqweeek lol. But it isn't really loud. Boy does it hold power so far though. The warmer it gets the harder it grabs!

I was expecting it to be very harsh, but other than the noise and the high temp grab, the thing feels completely stock.

So for those who are scared to run without springs, dont be. I would be more scared of a spring popping out than the harsh engagement of an unsprung hub. This thing is like butter, doesn't chatter, and just has a bit of noise. Now THAT is a compromise I can live with!
2009-07-12 22:00:03
#37
I may have to go with the setup you went with at some point Coheed. I have the ACT Xtreme PP and 6 puck unsprung disc. If I try to smooth shift sometimes the entire car shakes from the chatter. I like the instant grab though. I don't have too much trouble with starting and stopping (other than a really stiff pedal).
2009-07-12 22:23:39
#38
^^ thats what im going to buy tomorrow monday, the clutch i have right now is done. doesnt grab at all after 3k rpm.
2009-07-12 22:53:02
#39
My Clutchnet Sprung clutch is just about as my previous clutch. It does slip at below 5mph and is a little jerky into first gear, but gears after can go by unnoticed. I did install the Fidanza 10lb flywheel at the same time.
2009-07-12 22:54:37
#40
dude! VADIM! did you see the video? 10psi! not shabby!
+ Reply To Thread
  • [Type to search users.]
  • Quick Reply
    Thread Information
    There are currently ? users browsing this thread. (? members & ? guests)
    StubUserName

    Back to top