Hi. Im planning to replace DMFW with Aasco LWFW on my 996tt. I have a Sachs performance clutch with solid disc in stock. Anyone running LWFW with solid disc? How is it?
Read somewhere the spring disc is "recommended".

 

I have a racing Sachs clutch with lighten flywheel. It's awesome but your going to get alot of chatter at idle.

 

So is there any help to this chatter with spring equipped clutch disk or is it waste of money?

 

im running clutchmaster with LWFW - if you dont mind the chatter ---

 

Oh that clutch masters tore my flywheel up and lasted for 10,000 miles. Tough to drive in traffic and a big waste of money. Clutch masters is good but not on a Porsche.

 

I have the SACHS Race Engineering kit (I guess it is called the SACHS 2.5 kit, right?) with the AASCO LWFW on my car. Some chatter but not really annoying. Engagement is high, so I installed a clutch stop from RSS to get rid of a lot of pedal travel.

Not sure if there is a spring disc available. Did not see one in the SACHS catalog.

 

how's RSS? and did you disconnect the switch from the clutch?

 

The RSS clutch stop works great. Yes, you need to remove the wire under the dash when using a clutch stop.

 

You DO NOT want to run a solid disc with a LWFW. It will be very noisy and hard on the transmission as there is nothing to absorb the engine pulses and they will be transmitted directly to the gearbox.

Get the OEM 964RS LWFW and combine it with the OEM 4.0 GT3RS sprung clutch disc. It's a very quiet combo. If you want the lightest FW possible, get the OEM 996Cup version. It's the same as the 964RS one except they machined a little more material from it. The chatter is barely audible due to the spring design of the 4.0 disc. Engagement is perfect, smooth and right in the middle of pedal travel. It's all factory stuff. No guesswork, no headaches..

 

Thanks for your wisdom, decided to go with new DMFW anyway so I can use the solid disc Sachs 2.5 kit I already have.

 

+1 on the chatter with LWFW & springless disc. John, any idea how much torque will that RS's disc stand with decent PP?

 

Still considering LWFW. Thinking of Aasco + 4.0RS disc. I reckon it's compatible with Sachs Performance ....764 PP and throwout bearing?

 

When installing parts make sure that you have correct parts. There's difference in throwout bearing's ID (between Sachs and OEM) and you also must change the guide tube from turbo's short to RS's long one. Quoting here myself from another forum. I was left trackside at Nürburgring while the clutch pedal floored and stayed there.

Bonkers. There's nothing broken. Just the release bearing's guide tube is a turbo's short one instead of RS's long. I forgot to change that back in spring 2010. That added to Sachs release bearing with 34mm ID ( tube is 31.8mm OD and Porsche OEM release bearing 32mm ID ) there was enough space for release bearing to move away from the reach of clutch release lever. Bumby Nordschleife could have something to do with that too.
Guide tube will be changed as well as the release bearing as precautionary action. New bearings to release fork's shaft will be installed too.

 

Installing the longer guide tube only holds true when going 4.0 GT3 RS disk and 964 LWFW correct?


On a normal Sachs 2.5 clutch (764 PP setup, DMFW, unsprung disk) there is no need to change the guide tube, the OEM turbo guide tube is fine, correct?

 

I have the 764PP/4.0disc/964RS LWFW combo. Been tracking this for 2 years without any issues whatsoever Pete. My engine torque peaks at +670ft/lb at 4000rpm..

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