CB900 motor rebuild

 A friends 1980 CB900C is in for some work. The motor was making some bad noise on the top end and she leaked just a tad bit more than your average 30+ year old engine. So the top end came off finding the front cam chain tensioner spring had gave way without causing any serious damage. And since it was apart new rings have gone in. All new gaskets, valve seals, fork rebuild, crossover tubes on the carbs and some other small stuff is being taken care of.  She is also getting a fresh paint job and some polishing on the motor.