A new crankshaft design was incorporated to achieve the longer
stroke and provide increased bearing areas, with new bearing technology
addressing the larger bearing loads. Modified cylinder liners sought
good control over temperatures at all points, and the piston/ring
designs were also changed to minimize lube oil consumption and
cylinder wear. The cylinder head design and material specification
was refined to allow a small rise in the maximum combustion pressure
and to handle the greater combustion air throughput from the upgraded
turbocharging system. A new fuel injection system provided both an
increase in capacity and a higher injection pressure.