In my quest to find a new/used cam chain tensioner for my CB550, I ran across a CB650 version. It was practically unused and to all appearances looked identical except for the means of keeping the tensioner - tensed.
My question, which actually does a better job? I notice that while the CB650 tensioner looks the same, it isn't. The tensioner bolt is about 1mm away from where it should line up
![Cry :'(](http://forums.sohc4.net/Smileys/default/cry.gif)
. However that really doesn't present a challenge if a need to retrofit arises.
Ultimately my question is which tensioner actually generally works better? The one for the CB650 has a very simple mechanism, whereas the one for the CB550 has that funky gear system that really doesn't work all that well (in my experience).