New Chain and Sprockets

Posted by TwoWheelThom on Sep 30, 2008; 10:03pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/New-Chain-and-Sprockets-tp458168.html

I've been having a little trouble picking a new chain and sprockets on my cb750.  Its a 1979 limited edition 10th anniversary frame with the 1977 sohc engine, which reads cb750E.  The current sprockets are 18 teeth on the front and 48 on the back.  I figure that the sprockets would be stock for the 1977 model, but when i look them up, i find that the stock sprockets are:
1977 cb750F: 14-43 teeth
1977 cb750K: 15-41 teeth.  So i checked the 1979 and found
1979 cb750F: 15-38 teeth
1979 cb750K: 15-38
1979 cb750L: 15-38.  So i guess i havent been running stock sprockets, and i really like the way the bike has been running so i dont know how changing to stock sprockets would affect that.  Could someone advise me on the right sprockets to get for this bike and what the change in performance might be?  As far as the chain goes, i've found it to be a 630 but does anyone recommend a specific chain, or if i should get an o-ring or what else.  I dont race but i ride medium hard so i dont need a real expensive one but i dont want a cheap chain either.

Thanks a lot, i really appreciate any help!