It happens to us all but under these circumstances it was a bummer.Acc pedal was stuck under the matt and from a cold start,first time in a few weeks the obvious happend.Like a nob i panicked and didnt turb the ignition off quick enough.Plenty of swarf in the sump,big end shells were the worst.Mains were ok to a certain degree.Possibly they were on there last legs before the over rev,although the engine was smooth and felt strong.Crank is in the machine shop having a full grind.Was thinking about just replacing the bearings but that would be silly so the whole lot is coming apart.Just after advice really on how to clean the whole oil and coolant ways.Just looked in my expansion tank and theres like sand in the base,orange stuff with some fresh swarf mixed in.