https://www.common-motor.com/honda-360
One of the few weak points on the Honda CB360 / CL360 / CJ360 engine is the center cam bearing in the cylinder head. We have seen a number of engines out there where the center cam bearing has failed. While a repair is still in the works for damaged cylinder heads (don't toss your old cylinder head yet...), we explain why the failure occurs and how to prevent it from happening to engine in your Honda CB360 / CL360 / CJ360. We've had great success with these simple modifications so that your 360 engine lives a long healthy life. If you cam is damaged it can be repaired.
Honda Bond Gasket Sealer: https://www.common-motor.com/Honda-Bond4
Honda CB360 / CL360 / CJ360 Camshaft Repair: https://www.common-motor.com/Honda-CB350-CB360-CB450-CB500T-CB550-Rebuilt-Camshaft-Rocker-Arms