Firstly, clutch is fine and I've just had master and slave cylinder changed. However, I am wondering if anyone else has this? If I drive cruising, on the hightway, let’s say 3K rpm and if I depress the clutch whilst still softly on the throttle, I can feel slight (very, very slight vibration nearly unperceivable but it’s there) in the first ½ inch of clutch travel of the pedal. If I depress the clutch with no throttle there is no vibration. It’s like a little bit of a tranny vibration feeding back onto the pedal when on gas. Normal? Anyone felt this?

 

I feel it when I am getting on it around WOT and high rpms... Not sure on lower rpms.

 

yep... I feel it too... always have... between 3500 and 5000 rpm. i just had the clutch slave and accumulator replaced... still have it.

 

I had this exact same issue and wrote it up sometime back. I had several indies as well as a Porsche dealership and other P car guys drive it....almost universal consensus was that it is the fingers on the pressure plate that create a slight but high frequency vibration as you barely depress the clutch....you feel it in the ball of your foot...almost like a buzz. It drove me nuts....then I finally wore out my clutch about three weeks after I got the UMW flash and went to the beefier Sachs GT2 setup and I dont' have the vibration any more. Although it seems hard to accept....because any vibration is usually cause for concern....but it's normal for some cars. The vibration had nothing to do with the clutch going out...it was the increased power from the flash with 34K miles on the clock that did it...

 

Tell us more about Sachs GT2 setup performance/clutch feel/cost versus stock. Have you kept master and slave cylinders?

 

Since I've dealt with UMW for most of my upgrades, I also went to Kevin for the clutch upgrade. When he initially flashed my TT, he suggested that I also upgrade the clutch....but in my inimitable wisdom, I figured the suggestion wasn't warranted because my clutch was working just fine, and I didn't need to spend more money. Well it did work just fine for about three weeks, and I'm not a hard launcher or tracker....but the flash generated more power than the stock clutch could handle....so I went to Kevin's upgrade which he recommended in the first place. (This could be a good place to digress to a discussion on how modding your car can end up voiding a warranty, but that's going on in another forum). In answer to your question, earlier I replaced the accumulator when the clutch pedal began to get stiffer...but I kept the original slave in place, even tho guys will recommend you change out both. I didn't change out anything when I upgraded the clutch. I've not heard of any reason to do so unless perhaps you're tracking the car and want fresh parts as well as the usual "since you're in there" logic. My car is strictly a DD and street car...that I like to push at a periodic DE day or some time in the twisties.

There's not much to tell you about because it's the standard GT2 clutch plate combined with a refurbished dual mass flywheel. I opted to go to the refurbished dual mass flywheel to save a bit of money. Kevin recommeded the lightweight flywheel, but I chose to save a few $$$ and keep the dual mass setup. If you need more specifics, I guess I'd simply refer you to Kevin or any other vendor of your choice for your Sachs upgrade....but the "buzz" is gone, which truthfully could have been related to a throwout bearing or just like most of the guys said...those fingers on the pressure plate. I would say that unless your car is manifesting other idiosyncracies, like slipping clutch, burning smell, grinding noise, or increased vibration....I'd leave it alone...but it did bug me to no end. I think that P car guys have a tendency to panic the moment something slightly out of the ordinary comes up.....sort of like wanting brain surgery because we get a head ache.

 

Thanks mate. And I agree with your last statement. :-). That's whay I check here (great forum) and then leave at alone and say that's the way it is - sod it. . Thanks again. When clutch needs replacing I will consider your setup.