hmmm maybe you are right Dauntless. I had a Hilux normally aspirated diesel that had a belt fail. It was a huge job, bent valves n all. Years later I had a 300TDi which had a belt failure at 1,500km after replacement by toyot dealer. I had it trucked to BOR on the Sunshine Coast and they fixed it in no time and told me that line...
when it failed I was sure it was a diesel pump failure. A mech stopped to help me and he agreed so we sound it over plenty after replacing the spare lifter pump i always carry for a 300TDi. so it got wound over plenty even after the belt failed. BOR told me that the head and valves were fine. IT ran nicely for a year or more then I sold it on.