450SL bent valves
Even though the chain is new I suppose it could have been stretched during the first cam siezure episode. In this repair I am changing the tensioner as it clearly is not doing the job. If chain appears loose with new tensioner I can assume a stretched chain?? None of the guide rails were damaged either time. Perhaps that points to some other fault. Is it possible for the cam to sieze at one of the bearings and not show any visiable sign of that during dissassembly and inspection? During original rebuild the oil duct in head was cleaned, rodded out and washed with solvents.