If anyone can please help with the below problem it would be appreciated. On the car I have the harmonic balancer failed and the balance shaft belt snapped. The cam belt was not effected however the cam belt timing marks dont line up anymore. The engine is able to be turned by hand although it is stiff even with the sparkplugs out. It can be rotated through a full 360degrees and there are no loose rockers with the tappet cover taken off.
Should I just retime it with new belts etc, or remove head for inspection. Any and all ideas appreciated.