Condor Man

Hi Guys,

Currently I have 4,000kms on my RS and the Clutch seems to be on the way out which is strange to me.

Regarding hard driving, I have done 2 tracks days and one hill climb event which entailed around 8 hard starts.

Is this normal??

997gt3north

From previous high HP cars and plenty of gt3 trackdays, IMO you did it entirely with the hard starts - glazing the friction disk. The gt3 doesn't have enough TQ to prematurely damage the friction disk and pressure plate even with regular trackdays unless you are absolutely the most brutal brutal H/T downshifter - and even then unless your 2 trackdays were One Lap of Americas it still isn't likely. To do repeated drag launches with a street heavy, rear engined gt3, you are going to need both a friction disk and a pressure plate from one of the 600-700hp TT kits. If you want to continue with this activity, you may want to try the first step of resurfacing your current PP but upgrading the FD to one that can hold better. When you look at the OE FD, and compare it to an upgraded TT FD it will be very obvious for your application what needs beefed up.

Condor Man

I thought that it may have been from the hard starts as I started to notice the clutch wear just after the Hillclimb.

911SLOW

2000klm 15+ hard launches and so far everything is peachy.. we 'll see as I already broke an RSR pressure plate..

jenk12m

i put a 997 gt2 pressure plate in my old .1 gt3

kyrocks

Depends what you mean by "clutch seems on its way out"...

The 997.2 GT3/RS clutch friction/engagement point changes to a much higher position after broken in. Do you feel it slip on hill starts or hard WOT acceleration in 3-4th gear or is it just a higher engagment point? Higher point is normal. Slippage is not.

997gt3north

Having seen a few friction disks and pressure plates in my days (including the gt3), if you want to know what it looks like, click on the link below and look at a SPEC Stage 1 friction disk - this is exactly what the OE disk looks like. This type of disk is used in many VW / Audi / Porsche cars in the 250hp to 350tq range - i.e. the gt3. The difference between 250hp and 400hp cars (not tq) usually almost always is an upgraded Pressure Plate that would have 50% more clamping force - but the friction disk often remains the same to keep it streetable (i.e. non-jerky engagement).

When you move beyond these (Stage 1 / Stage 1.5) setups (lets say Stage 1= GT3, Stage 1.5=TT with increase Pressure Plate force) you then have to decide what you need the car to do. If as you described, you want to drop the clutch, you are going to need a beefier PP and almost certainly a stage 2 type friction disk - so it can handle the heat. It is maybe possible, as I stated initially that the GT3 PP is enough but that you just need a Stage 2 type friction disk to handle the heat / fight the glazing issue. If you weren't a launcher / clutch dropper, but just had a 500hp 4.0 liter GT3, then a 997TT PP with the OE GT3 friction disk would be sufficient.

I suspect that just upgrading the friction disk is sufficient, but since you have to pull the tranny (labor $$$), the safest bet is to go with the TT PP and upgrade to a Stage 2 type FD.

http://www.specclutch.com/products

Condor Man

I don't have any slip. The clutch is just very firm now and the friction point is way up to the top of the pedal.

kyrocks

That sounds normal on the current GT3/RS.

Condor Man

That's really interesting, I can't same that this has made driving a pleasure.