IMO, I'd stay stock. Since we're looking at a lot of stop and go pedal moves, plus I bet the fork and ball were never shot with anti-seize every now and then, I'd change out:
1. Clutch Friction
2. Pressure Plate
3. Throw-out Bearing
4.Fork (lube anti-seize)
5. Ball (lube ^ on assy)
6. Flywheel* (*shop manual?)
If you have the $$, then a new flywheel. Shave the flywheel surface to save money? Remember that the plate is machined thinner*, which means the hydraulic (piston) throw is going to create a lower pedal feel? When the clutch wears out this time, the gears will grind and shifting will drag when finding neutral.
Don't know if the shop manual offers a wear limit where no machining is required because of the performance tolerances, or there is some sort of leeway?
Personally, I see the clutch parts as a 6 piece assembly to replace as "one single unit"... but hey, that's just me. The above was more for the rattled out high milers.
As for the chatter, Jerrysoc, I can't see how a 30K clutch would go out that soon? My "chatter" thoughts fall in the line of; Miss-matched rear wheel-to-engine rpm clutch release? Now, if you can simply release the clutch pedal without your foot on the throttle and the chatter is still there... then for sure, the friction my have cooked?
My thinking for this friction chatter is someone... (e.g.), who "holds the pedal in", and doesn't think to keep the friction plate cooler, by letting the heat dissipate thru the clutch assembly?
Do you find neutral at a light, or hold the clutch pedal in, waiting for green in 1st gear? Do you slip the clutch (friction = higher heat) in traffic? Do you (then) push the pedal in and coast up to the car in front of you? Or, do you leave plenty of room, so you can fully release the clutch pedal to get as much heat dissipation off the friction? Can't blame the car when only a few owners experience chatter? No offence.
Krnlpnc, how's about I snow you with an "odd vibration" explanation rather than brushing it off by saying its, "normal?"
You have "harmonics" spinning. Think of the clothes drying from the spin cycle. Can you remember how the whole machine sakes when the spin starts, and the vibration when the spin is over and coming down in rpm? With a heavy steel flywheel, the vibration is buffeted. Using an aluminum flywheel, that vibration overrides the harmonics, because the aluminum is so light. Sound logical?
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