Kup, which section would muffler mod questions go in? What about 2 stroke theory, or bar oil, or plug problems, or 2 stroke mix ratios, or chain filing, or bar choices, or cleaning plastic, or removing sap, or dawg size, or file choice, or chain discussions, or cookie cutting, or making curly fries, or saw cases, or ways to carry your saw on your vehicle, what about carb tuning or replacing a venturi and probably another thousand things...........do you propose all those to get broken down into cc size for posting? Then what happens when you do a search, will the search function be split by cc's, what happens if people post in the wrong cc forum?
I don't think splitting by cc's is workable, practical or even smart. I hear you on the clutter, but I think you should endeavor to persevere a little more rather than worry about changing it. I think ultimately you would end up with more to read with that split, and I think the overwhelming majority would be reading both anyway. Just my .02 but I do see your point. If everybody made a point to police up the OT stuff it would be much less cluttered.
But don't hold your breath waiting on that!