07-10-2015, 04:34 AM
(07-10-2015, 03:34 AM)Toddman_imp Wrote: I think you are hearing the cam drive train. Since these bikes are not water cooled, you will hear noises that you've never heard. I think the "whining" that's talked about is that cool, old style whistle that is so endearing to these inline fours. My KZs all did it and personally, I like it.
Exactly, without the water jacket surrounding, and muffling, the mechanicals you will hear much more of the normal sounds going on inside the engine.