Hello everyone. Over the past few months, I've been finishing rebuilding my 1980 KL250A3. Bored out .020", cleaned up all electrical connections, and a bunch of other little stuff. The issue that I'd like to address and get some input on in this thread is the clutch. It was slipping at high RPMs and topping out at about 65mph. I took the clutch cover off, mic'd everything, and decided that everything was in spec. I did notice that the clutch plates felt rather hard, metal-like almost. I'm no experienced pro by any means when it comes to clutches, let alone motorcycles, but it seemed to me that the plates were supposed to be more quark-y. So, going out on a limb, I replaced the friction plates, and the metal plates just for the hell of it. Fixed the slipping, but did absolutely nothing for the lack of top speed. So, I cleaned out the rack and push rod thinga ma jig, greased it up real nice, and reassembled it, making sure everything was functioning smoothly and properly.
I guess my question here is, what other problems could cause this lack of top speed. Is there even a lack in top speed? Are my expectations too high for this bike? I'm a rather thin guy, 135 lbs and 5'11", I wouldn't think that would be enough weight to reduce the top speed to 65.
I'm assuming that my expectations are just too high, and that this is just how a 250 of this age performs. I would think that this bike should be able to pop a wheelie without much trouble though, and it takes most of its power in 1st gear just to pop the front tire off the ground for a brief moment. Now, I couldn't care less about riding wheelies all over town, it just seems to me that a 250 should have no problems doing this. Again, probably just my expectations, but any input would be appreciated.
Thanks!