Triumph Bonneville T140v, 1977
This was my sludge trap....Mmm I was hoping to avoid splitting the cases but maybe that was wishful thinking as I don’t have any history on the bike.
Engine was clean, crank on standard bearings and bores +40 thou. Can't be entirely sure of the mileage, but it is not excessive. The bike has sat in a shed for thirty years.
Whilst in there you could also check that you have the later type timing side main bearing.