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I recently purchased this very fine, virtually new looking 1982 Honda CB900 Special with appx 20k miles from 'careful' original owner. Due to the pristine cond. I 'assumed' that the oil level would be o.k (alright, so I 'assumed' too much)...after noise started, I checked the oil... it wasn't 'OK' (1.3 qts low)... Long story short... I 'think' I may have burnt a bearing, but I'm not a mechanic...there's a noise coming from what sounds like the upper area of engine...sounds like the noise an old electric hand drill that's shot makes, if you've ever heard that noise...only happens when it's warmed up and actually being driven. Doesn't seem to do it when idling or revving in neutral. If you KNOW where/what it is, that would be helpful. Thanks!

I dont even understand you choice of wording 'sounds like the noise an old electric hand drill that's shot makes'. If it is really from the top end and has a ticking sound it is probably your valves, but for the bad news. Low oil in that bike is a very bad thing usually you will wear out the cam and head. This is like a high pitch whine. First check your cam chain adjustment then go from there. Trust me you dont want to have to pull that top end if you dont have to.

...would low oil affect cam chain adjustment?...If it's the cam/head (bad news) mentioned, what would I need to do? With appreciation.........g.