whakiewes

I don't post much over here, so I thought I would change it up a little. My next task on the 968 is the clutch/flywheel. I am looking for something capable of 400wtq, so most options are out. I was curious what the 968 Turbo RS's used for their clutches? I have aquired several hodgepodge parts to give a try, such as a 951 flywheel and clutch setup (I know it won't bolt on, but I would like to use a machined down 951 flywheel), 964 clutch, 930 clutch, and a few other random PP and disks. Anyone know whether the Turbo RS's used the dual mass, or were they on a single mass? Parts available through OEM?

Thanks,

Wes

RajDatta

The 968 turbo RS used a 951 clutch setup. You are heading in the right direction. They used a 951 style clutch bell housing and the torque tube was what was unique. It had the length of a 951 torque tube but the bell housing mating area for the tranaxle was similar to a 968's. That said, a 951 torque tube is a direct bolt on.
So essentially, everything is pretty much available except the torque tube.
Raj

whakiewes

Okay, so they just used a standard 240mm 951 clutch setup. I am probably going to go with a KEP Stg. 1 PP and a ceramic disc most likely. I also have a 951 torque tube setup and bell housing. I was trying to not go to that though so that I could do a clutch job without dropping the transmission by keeping the 968 bell housing.

What is the lightest most guys are running? I was going to machine my 951 flywheel to 8lbs? The Fidanza is 14lbs, but honestly thats not that terribly light for the $400 price tag.

Wes

RajDatta

I think they use a 930 based pressure plate. I have the original turbo S parts but the turbo RS could be puck based disk.
Raj

whakiewes

Raj,

Thanks for the replies. I am going with a 930 pressure plate, most likely a 6-puck ceramic disc, 8lb 951 machined flywheel, and stainless clutch lines. This should hold anything I am hoping for in the near future. I just want to do the clutch once, and only once for a long time. While I won't be pushing that much power right now, to save the hassle of doing it more than once I will struggle with a bear of a clutch.

Wes

sparky

Raj

is it important to use 951 torque tube & clutch?
what's wrong with retaining the stock 968 torque tube ?

Sparky

RajDatta

With a 968 torque tube, you would have to deal with the troublesome Fidanza flywheel. There are new options with 9meister now making replica's of the origional 1 piece Porsche motrosports flywheel. That would be your other option. You will get a lot of transaxle noise from removing the DMF. I went with a 968 turboS or similar to a 951 route because of options that are available and knowing that these setups can handle a LOT of power.
Raj

sparky

Raj - thanks, now me comprehende ... food for thought ...

dynatech

Sorry guy's but i bit off topic here,

Sparky,
what this I hear about you getting third in the SAPC championship, well done old chap, I've been watching your lap times, you cant possibly get more consistent than that,

sparky

Scott ... you are alive after all
yes finally some respectable times. But even more pleasing, I pulled a 1.21.61 in the white car last weekend at MSCA sprint ... yeeha! That's nearly 1.5 secs quicker than the red one!

so when will you be in Adelaide next?

sparky
MY02 Boxster S (sold)
MY94 968CS (red)
MY94 968CS (white M030 - soon to be turbo)

sparky

Raj

Another Q - clearly single mass flywheel is the best choice, but I might need to do things a little cheaper / easier ... so in yur opinion is the stock 968 dual mass flywheel strong enough for the 968 Turbo torque & power ?

sparky
MY02 Boxster S (sold)
MY94 968CS (red)
MY94 968CS (white M030 - soon to be turbo)

RajDatta

Yes, my previous setup was run this way for 8 years. They machined the dual mass flywheel and added the 951 pickups because they wanted to run 951 electronics with two rensors for speed and reference. Not sure what teh threshold for power is though.
The DMF is still good even though I no longer run it. I think teh DMF's are used in the newer turbo variants as well.
Raj

Jason Judd

I have the DMF in my 968 turbo variant, and run about RWHP of 325HP and TQ of 389 lb/ft.

I haven't had any problems, but you may be interested in more power than that.

Just a data point, though.

Jason

RajDatta

Thanks Jason, so there you go. It can handle a LOT of torque to the rear wheels. You should be fine.
Regards.
Raj

whakiewes

Jason,

Thanks for the information. I am more concerned with the lightweight factor more than the actual torque capacity. there are DMF's on BMW's with nearly 1000hp now. I am looking for function though when I tear everything apart. I think I am going to go with a machined 8lb 951 flywheel. That will be a significant advantage over the 20lb+ 968 DMF.

Wes