Some talk about sprung vs unsprung

[sikkk240]

Sprung -
this is basically a stock disc.
http://img68.imageshack.us/img68/6104/sprungclutchea7.jpg

Unsprung -
now this is a 6 puck.. unlike the other one.
http://img366.imageshack.us/img366/1269/unsprungrb8.jpg

Which is better, depends on usage. For any performance application I would say un-sprung. 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. The springs in the clutch disc prevent crank vibrations from entering the transmission.
Its not that the unprung is harsh on your tranny or motor, I have taken out a few tranny's and noticed nothing unusual about an unsprung.
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.

[I rewrote clutch101 stuff.]

If anyone has anything to add on, please do. And if im completely wrong, please tell me, and delete this thread.

Thanks =]

-Kenny

[sikkk240]

Also, here is a little more information on clutch discs and some more stuff.

http://www.turbomagazine.com/tech/0407tur_clutch_tech_basics/index.html

[sikkk240]

bump to the top, if anyone wants to add on please do. Id like to know more if anyone does.

[breakindrifts]

Yeah you're completely wrong ...

Run a sprung clutch.
Unsprung clutch IS harsh as hell on the gearbox. Not good for just ANY "performance application" wtf..
It's overkill to run unsprung with 240 trans unless you have a 500+ hp drag car or some shit.

[TheWolf]

nope. The answer is sprung clutches are there to soften the engagement and minimize the shock loads to the drive line between gear shifts. Crank harmonics are not effected as that is the job of the flywheel and pulley/damper. Second if the springs were to operate in such a manner they would need to be slightly loaded and the engine would have to be at a constant torque output which isn't the case.

[sikkk240]

Alright cool, thanks guys...
the reason it says Unsprung for performance.. i was talking about HIGH HP and HIGH TQ numbers.. i should have clarified that more.. sorry.