Okay so a few days ago I was out driving my 2001 s2000, which I just replaced the engine with a 03 f20c with fewer miles. Put a brand new oem clutch in as well. But as I was driving the clutch pedal got stiffer and started to kind of stick down. It always comes back up, but it hesitates a little. I figured it would be the master or slave cylinder so I replaced both. But of course it's till doing it. I went out driving tonight and decided to do a hole shot. As soon as I did the clutch started working fine for about 2 minutes then went back to being hard and hesitating. Doesn't slip and shifts easily as well. (Yes I bled the clutch extremely well) Thoughts?

 

s2ki.com or google. Very little traffic here

 

Try putting Urea grease on the contact points of the clutch fork and bearing. Also where the fork pivots. I believe there is an old bulletin for this problem. Had the same problem with an 01 a while back and it fixed the problem.