Clutch pedal travel excessive |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Clutch pedal travel excessive |
peteinjp |
Apr 10 2023, 06:53 AM
Post
#1
|
Member Group: Members Posts: 201 Joined: 15-July 21 From: Japan Member No.: 25,723 Region Association: None |
Not wanting to put any undue pressure on the TOB I pulled the cable end as far forward as i could while pushing the clutch lever as far back and adjusted the cable with no free play. Tube is good, cable, pressure plate, flywheel etc all have about 30,000kms. Pedal stop is low and yet I have to push the pedal all the way to the floor to keep from grinding in 1st and reverse. I can not pull the pedal back at all as described in the factory manual. It works but barely- the travel is too far even with the cable adjusted with slight pressure on the shift fork lever.
It seems to me there should always be just the slightest play in the cable- no?? Any thoughts? Pete |
peteinjp |
May 4 2023, 03:59 AM
Post
#2
|
Member Group: Members Posts: 201 Joined: 15-July 21 From: Japan Member No.: 25,723 Region Association: None |
Flywheel has a hot spot evident from the front side (non friction.)
Micro cracks in the pressure plate. not sure if the is abnormal. The cracks are very fine: Given the off center heat mark on the flywheel it seems one side was getting hotter than the rest. I wonder if one of the teeth from the flywheel made its way/lodged into the pressure plate assembly throwing it off parallel as it engaged??? RMS leak for sure-not the case. Surprised to see a VR seal in there as it is the least popular on the forums. I'll probably try the elring. It does seem there is a Speedy sleeve in there already: |
porschetub |
May 4 2023, 05:35 PM
Post
#3
|
Advanced Member Group: Members Posts: 4,705 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Flywheel has a hot spot evident from the front side (non friction.) Micro cracks in the pressure plate. not sure if the is abnormal. The cracks are very fine: Given the off center heat mark on the flywheel it seems one side was getting hotter than the rest. I wonder if one of the teeth from the flywheel made its way/lodged into the pressure plate assembly throwing it off parallel as it engaged??? RMS leak for sure-not the case. Surprised to see a VR seal in there as it is the least popular on the forums. I'll probably try the elring. It does seem there is a Speedy sleeve in there already: I was referring to the 4 cyl 914 starter or the 911 one which has a bit more h.p.,both will work. Those pics confirm what I had thought about the clutch being another issue,don't really think the ring gear teeth were the issue as they would most likely get spat out the bellhousing opening on to the road. Looking @ those heat marks and resulting cracks that clutch has been slipping most likely caused by a faulty unit or not fully releasing as per your comment about the peddle having no upward movement and the wear on the pressure plate fingers. I would caution you on the PMS unit as the (pie plate ) 215mm stock unit is pretty light anyway,all good using stock Saches ZF components. Not sure on a replacement flywheel source,you need to research that and be savvy as I seem to remember prices are all over the place as for the clutch kits. VR 911 crank seals are rubbish,fitted one on my motor and it popped in by hand ...way to loose in the case,proper seal needed to be dead blow hammered in and went in nice and level. End of the day sadly all the old bits are toast,but I know this car and it is too nice to not have back on the road. Good luck,cheers. |
Lo-Fi Version | Time is now: 8th June 2024 - 12:45 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |