any have the same experiance as me..well i installed a new clutch, new master cylinder, new slave cylinder, in my 95 integra and now when i drive my car for about 10-15 mins, my clutch pedal get pretty stiff? causing a grinding/rubbing sounds, sounds like when i press on the clutch pedal master cylinder is putting to much pressure to the salve cylinder onto thepressure plate and disk then grinding/rubbing against the flywheel. but my morning starts and drives my clutch feels normal and drives normal..it only gets stiff after driving for awhile.. .anyone knows or aware if this problem.. ?..please let me know..

 

Did you properly lubricate the release bearing???

 

I think your clutch pedal needs to be adjusted higher. The same thing happened to me when I adjusted it too low. When I set it back everything was fine.