Wierd Clutch - S2000 Forums

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Wierd Clutch

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Old 04-15-2018, 05:16 PM
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Wierd Clutch

Ok never seen a problem like this in a hydraulic clutch. When the clutch is cold it works great. plesent pedal feel, nice engaugement point ... But ! When it warms up pedal force goes up, engaugement point varies, pedal travel is reduced, can depress it all the way but sometimes has a thump at the bottom. Still shifts and drives but very irritating.
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Old 04-15-2018, 05:26 PM
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Oh yea. New pilot bearing, clutch disk, pressure plate, throwout bearing, flywheel, slave cylinder, hose and master cylinder. all stock.
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Old 04-15-2018, 07:57 PM
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Did you install all the new stuff? This sounds like something with the slave or master cylinder, but that's hard to diagnose from the internet.
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Old 04-15-2018, 09:47 PM
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yes I installed everything. Im not new at this and it's not even my first S2K clutch. I don't think its a bleading problem because these thing almost blead theselves. Any body thinking quadrent issues ?
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Old 04-16-2018, 06:01 AM
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I'd bleed it just to rule that out.
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Old 04-17-2018, 10:26 AM
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If I bleed it any more it will need a transfusion but ok its only brake fluid.
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Old 04-17-2018, 08:12 PM
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I have the EXACT same issue.
Last year end of season it started getting real bad.
As of now this is what I've replaced (all new parts):
Clutch/pressure plate/throw out bearing (cleaned up trans input shafts and collar that the throw out bearing rides on thoroughly and greased)
Light flywheel
Clutch master and slave cylinder
Flex line with SS braided.
Due to weather I was only able to get it to work do an alignment and drive it back home BUT by the time I was home I could feel it starting to stiffen up again

To add more info if I remove and reinstall slave cylinder it goes back to normal for a bit then right back to feeling like garbage.
Only thing left to replace is the throw out fork and the transmission

Last edited by Toyonda002; 04-17-2018 at 08:18 PM. Reason: Adding more info
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Old 04-18-2018, 07:11 PM
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I keep thinking slave cylinder with this issue.....are the bolts aligned properly?

Another idea....did you grease the spindle that the throwout bearing glides across?
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Old 04-18-2018, 07:48 PM
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Originally Posted by Jim21680 View Post
I keep thinking slave cylinder with this issue.....are the bolts aligned properly?

Another idea....did you grease the spindle that the throwout bearing glides across?
Yes and yes if you're asking me lol
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Old 04-22-2018, 01:44 AM
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Yes and yes. Molydisulfide on the nose. Also put a 0.050 shim behind the flywheel to center up the fork. To me its not a deal breaker its just irritating.
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Old 04-22-2018, 01:48 AM
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Cleaned and greased the Thrans nose. I did that too.
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Old 04-22-2018, 01:54 AM
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Stiff pedel and short throw kind of say to big a master cylinder. Do I have the right size ? 7/8
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Old 04-22-2018, 02:00 AM
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Plus as Toyonda says it starts good but goes downhill.
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Old 07-28-2018, 11:09 PM
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Ok I got it. The throwout bearing guide had wear. The real root cause is the moly grease. Check out the specs on the polyurea grease that Honda recomends its very eye opening. the wear on the guide combined with the incorrect lube rapidly wears out the ID of the throwout bearing. Mine resulted in catastropic bearing failure by driving the snapring off the bearing carrage.
I recomend removeing the guide from the front of the transmission ( three 6mm bolts ) and cleaning and inspecting it. If there is any wear at all replace it. Its only about $65 and a day away from the dealer.
My clutch is smooth as silk now. Yay !
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Old 07-28-2018, 11:17 PM
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Oh yea. I also replaced the fork. It looked fine but the socket for the slave ball was 0.065" deaper than it should have been. That explains the 0.050" flywheel shim. Hundred bucks and a day from the dealer.
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Old 07-30-2018, 04:30 AM
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Originally Posted by AP1Dave View Post
Oh yea. I also replaced the fork. It looked fine but the socket for the slave ball was 0.065" deaper than it should have been. That explains the 0.050" flywheel shim. Hundred bucks and a day from the dealer.

Thanks a lot for the update. I guess I'll be looking into getting these parts now
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Old 07-31-2018, 07:04 AM
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Originally Posted by Toyonda002 View Post
Thanks a lot for the update. I guess I'll be looking into getting these parts now
Just ordered the release bearing guide... Back ordered until november lol greaaaat
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Old 08-01-2018, 06:48 AM
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Originally Posted by Toyonda002 View Post
Just ordered the release bearing guide... Back ordered until november lol greaaaat
UGH!
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Old 08-19-2018, 03:47 PM
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FIXED
Thanks a ton for this thread. My guide came in way earlier than expected so I jacked my S up on stands in my garage and went to town. Surprisingly I had the transmission out and back in all in a day. Here's a couple pics of the old and new guide for those interested.

I'll post a couple more pictures of the transmission re+re on my "new to the forum" thread.

THANKS AGAIN
If you could feel the divot this old worn out guide had you would be amazed it ran at all!
Old vs new
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Old 08-19-2018, 04:58 PM
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lubericabt???

Dave
I was planning on using Moly Gr anti seize (500,000 psi 600F) for everything (McMCr 1279K31) as it has been working pretty well on the dog (better than PBR) . What did you use?
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Old 08-20-2018, 08:04 AM
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Originally Posted by Toyonda002 View Post
FIXED
Thanks a ton for this thread. My guide came in way earlier than expected so I jacked my S up on stands in my garage and went to town. Surprisingly I had the transmission out and back in all in a day. Here's a couple pics of the old and new guide for those interested.

I'll post a couple more pictures of the transmission re+re on my "new to the forum" thread.

THANKS AGAIN
If you could feel the divot this old worn out guide had you would be amazed it ran at all!
Old vs new
Not too shabby!
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Old 09-15-2018, 05:33 PM
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Round trip in a day is really good Toyonda002. My record is 7 hours but thats because my daughter did most of the work while I kept track of the beer supply. Nice pictures too. Thanks.
In reguards to First Bills question the 600 deg looks ok from a temp standpoint the high solids anti seize may reduce clutch "feel". Maybe. Also the Urea base grease decreases "washout" by getting thicker above a set tempature.
As far as dog butt maintence goes I really don't know because I don't have one in the show. Just to be on the safe side I have increased the Pacifico consumption while maintaining the current PBR levals. Seems to be working.
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