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I've got a 2008 997 C4 w/ 56k miles on it. It was cold this morning (30 degrees F) and I noticed clutch slip for the first time since I bought the car in higher gears under full throttle. The clutch pedal feels very mushy and lost alot of its spring on the return. I stopped by my local shop and he confirmed its the clutch.
The car is my daily driver but I do autocross about once a month and intend to track in the future. I told myself I'd get the light weight flywheel when its time to replace the clutch, and so it seems that time has come. I'm not adverse to the extra noise of the LWFW, but I've heard that you shouldn't do this mod on a C4. I see sharkwerks has a C4 project car with the LWFW so I assume it worked out, but who knows.
Aside from the flywheel obviously I need a clutch. I've been looking at the Sachs stage 2.5 performance clutch kit, and it seems like a good option. I've also heard that the BBI clutch slave cylinder is an upgrade that would be helpful for clutch performance and feel.
-Anyone have any experience with a LWFW on a C4?
-Anyone have any experience with the Sach's stage 2.5 kit on a C4?
-Any other clutch kit recommendations?
-Anyone have any experience with replacing the clutch slave cylinder?
Note: I'm going to get my IMS bearing inspected but if its not leaking I think I'm going to pass, seeing how I have 56k miles on it with no issues. Perhaps its past the infant mortality stage?
I have a 2007 C2S manual with about 132K on the odometer. A low oil pressure light has started to show up at idle after the car is warmed up. It seems as if the light is gradually coming on more frequently. The pressure gage on the dash reads around 0.5 bar when the light comes on. When the car is cold the starting pressure is around five bar and is about 3 bar at 3000rpm. As it warms up the pressure drops to about 2 bar at 3000rpm. I always run 0-40W Mobil 1 and change the oil every 5K miles. With the engine off and turning the key one click the pressure gage rises to about 0.1-0.2 bar.
Can anyone help me diagnose this issue? Would be a sensor or something mechanical?
2006 C2S, All highway driving. From past experience with my cars, I know that I am gentle on my clutch/trani. 108,000 miles on original clutch. Pedal travel is still 2.5-3.0 inches from floor to start of engagement. I do not think that pedal effort has increased. Am I on borrowed time?
Thanks in advance.
By Steve Mongrain
Aircraft engine Tech, currently replacing the clutch on my AutoX 1999 996 C2, first time tackling a clutch/ IMS job.
While the clutch & Pressure plate are worn out, I inspected the flywheel, based on Porsche's TSB 911 8/02 1360, & found it to be a bit worn, but serviceable. Common knowledge suggest to replace the flywheel every second clutch change or every 100K miles.
Considering the high price of the flywheel, is it Worth it to replace it right now or I can expect it to last until the next clutch change?