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Old 01-11-2018, 06:21 PM
  #16  
ecostellodo
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At 109K on my clutch. It is a daily driver and I autocross the car.
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Old 01-11-2018, 07:12 PM
  #17  
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Originally Posted by yvesvidal View Post
Just try to do an heel toeing..... and let us know how it works out for your ankle and knee.
There are kits available that will align the pedals to make it a lot easier.

Yves
I've found it to be very easy to heal-toe. What are you doing to hurt your ankle and knee!?
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Old 01-12-2018, 12:06 PM
  #18  
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Originally Posted by cosm3os View Post
I've found it to be very easy to heal-toe. What are you doing to hurt your ankle and knee!?
Obviously, I must not be the only one who has troubles heel-toeing with a 997.1, since Rennline developed a specific feature for the 997.1. Take a look at this thread: https://rennlist.com/forums/997-foru...gas-pedal.html

Yves
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Old 01-12-2018, 01:56 PM
  #19  
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That alittle different than your original suggestion that you need to rearrange the pedal box!
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Old 01-13-2018, 01:32 PM
  #20  
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Wow. A lot of high mile clutches on here. I’m bummed mine crapped out so soon. I think SF roads and a steep driveway where I have to feather it in reverse so as not to scrape contributed. I rev match but also using engine braking on downshifts, typically at an off ramp. How much impact do you think this has?

I've got my appointment next Wednesday to replace the clutch. My Indy is letting me do the work myself. I figure I will do the prelim work and call the experts in to help with tranny drop and install. They’re just charging me for the time used. Amazingly nice of them. i told them I know they have a businesss to run so didn’t want to impose. They were fine with it.

Ive compiled Yves and the OPs instructions together in a 10pg checklist, cross referencing the workshop manual. I noticed they reference different size bolts in a few places.

Ill try to take a bunch of photos and share any tips I get along the way. Should be an adventure.
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Old 01-17-2018, 08:16 PM
  #21  
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Quick update: I replaced my clutch today and the clutch disk and flywheel were fine. I likely had another 20-30k mikes left on the clutch disk and the flywheel should last another 50k miles. However one of the pressure plate fingers had cracked all the way through causing it to bend and the throwout bearing was worn. We replaced the clutch disk, bearing and pressure plate.

My theory is I had the clutch partially depressed when I hit a pothole last week and the jolt cracked a finger.




Cracked finger


Worn throwout bearing above, new bearing below.

Last edited by TheBruce; 01-18-2018 at 01:44 AM.
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Old 01-17-2018, 09:50 PM
  #22  
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Originally Posted by TheBruce View Post
Quick update: I replaced my clutch today and the clutch disk and flywheel were fine. I likely had another 20-30k mikes left on the clutch disk and the flywheel should last another 50k miles. However one of the pressure plate finger had cracked all the way through causing it to bend and the throwout bearing was worn. We replaced the clutch disk, bearing and pressure plate.

My theory is I had the clutch partially depressed when I hit a pothole last week and the jolt cracked a finger.

Cracked finger

Worn throwout bearing
Intersting. I've read of a few pressure plate failures in these cars, same failure mode - broken fingers.

I suspect my throwout bearing is also shot. Car makes a horrible creaking sounds when releasing the clutch, I can hear it when the cars in the garage and its silent. Talked to my indy about it, but we don't want to crack it open until necessary. Did you have any noise with yours?
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Old 01-17-2018, 10:28 PM
  #23  
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Originally Posted by Rampage View Post
Intersting. I've read of a few pressure plate failures in these cars, same failure mode - broken fingers.

I suspect my throwout bearing is also shot. Car makes a horrible creaking sounds when releasing the clutch, I can hear it when the cars in the garage and its silent. Talked to my indy about it, but we don't want to crack it open until necessary. Did you have any noise with yours?
Yes I had the creaking noise as well however it only started last week when everything went to **** so I dont think it was at the throwout bearing. I think it was the broken finger. After seeing it up close I now understand why the clutch pedal feel changed so quickly - and so inconsistently.

I first had a minor vibration in the pedal but the feel of the pedal didn't change and the clutch wasn't slipping. That was the original crack. The next day the pedal got softer and the release point seemed to change. That was the crack getting larger and the finger starting to bend inward. Driving over this morning the release point changed again and was almost down at the floor. That was the finger totally giving way.

What I've learned is the typical symptom of a worn clutch disk is a high release point and slipping. If your pedal becomes very stiff its because you've tempered your pressure plate fingers doing burnouts. If you have a sizable vibration or your engine is throwing misfire codes its typically the dual mass flywheel.

In total I had three areas of failure: the broken finger, a worn throwout bearing, and a broken slave cylinder sleeve. The broken slave cylinder sleeve just transferred more of the vibration into the pedal. It must not have been broken long as the release arm wasn't scratched. We were able to clean it up and reuse it. I think the throwout bearing was likely the least of my problems. It probably would have been fine until the clutch disk wore out.
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Old 01-18-2018, 12:14 AM
  #24  
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@WC11- yes. IMSB and RMS just as insurance while I had the thing cracked open.
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Old 01-18-2018, 09:44 PM
  #25  
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Originally Posted by TheBruce View Post
Yes I had the creaking noise as well however it only started last week when everything went to **** so I dont think it was at the throwout bearing. I think it was the broken finger. After seeing it up close I now understand why the clutch pedal feel changed so quickly - and so inconsistently.

I first had a minor vibration in the pedal but the feel of the pedal didn't change and the clutch wasn't slipping. That was the original crack. The next day the pedal got softer and the release point seemed to change. That was the crack getting larger and the finger starting to bend inward. Driving over this morning the release point changed again and was almost down at the floor. That was the finger totally giving way.

What I've learned is the typical symptom of a worn clutch disk is a high release point and slipping. If your pedal becomes very stiff its because you've tempered your pressure plate fingers doing burnouts. If you have a sizable vibration or your engine is throwing misfire codes its typically the dual mass flywheel.

In total I had three areas of failure: the broken finger, a worn throwout bearing, and a broken slave cylinder sleeve. The broken slave cylinder sleeve just transferred more of the vibration into the pedal. It must not have been broken long as the release arm wasn't scratched. We were able to clean it up and reuse it. I think the throwout bearing was likely the least of my problems. It probably would have been fine until the clutch disk wore out.
Thanks.

Saw your write up in the DIY thread, that's great that you had a local shop willing to do the work with you!
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Old 01-19-2018, 11:13 AM
  #26  
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Originally Posted by Bruce In Philly View Post
My 2000 Boxtser S, I got 197K miles on the clutch when the engine blew and killed the car.. I don;t know how long that would have lasted; I was the original owner.
My 2009 C2S, I got 120K miles on the clutch but I purchased the car with 26K miles on it... so I am either embarrassed or I blame the original owner.... um, I blame the original owner.

Clutch life is all in rev matching (aka heel toeing). I do this all the time and is a source of pride.... it is part of the craft of driving.

Peace
Bruce in Philly
Completely agree. With the same techniques I got over 200,000 miles on the original clutch of my daily driver BMW.
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