I have an '89 KX250 that I got a few years ago but have not ridden it much. I recently picked up another one that was dissasembled about 10 years ago due to a broken 4th gear on the output shaft. I plan to rebuild the motor. All the parts have been sitting in a garage so they are in good shape but need cleaned up a bit. My question is this: In inspecting the plated bore, what am I looking for? The texture of it is a little rough due to a very light dusting of rust, mainly from just sitting around. Should I get one of the Wiseco brushes and clean it up or what's the best thing to do? In my initial measurements (with inside mic), it appears to be within specs. I just don't want to get a ton of money in this thing as it will just be a playbike.
Thanks,
Steve
Tulsa