Re: cbr 900RR SC33 clicking or tapping noise
I would suggest it is most likely a metal part, or around a metal part... the fact that it becomes more pronounced when the engine is warm indicates that once the metal expands from the heat it is allowing the tapping. Unfortunately that also means there a lot of things it could be from lifters, valves, bearings..... Your mains look just like car crank bearings in that they sit in a grooved slot and are slotted together. They are held in place by one little tab, if that tab breaks off your bearing spins and widens the channel it sits in. This will allow the bearing to start moving and eventually will fracture/rip apart probably fragging the whole engine. Could also be true of a rod bearing. Without ripping the whole engine apart and simply rebuilding it finding the problem is hit or miss trial and error...
/**Serenity**\ 2002 Honda CBR954RR Fireblade
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