Hi All
Some further info fot you
The engines are used for propulsion in a twin installation running on a 15/40 grade lube oil.
The piston failures are melting of the crown followed by disintegration.I believe that some pistons have been found with cracks on the crown.
The organisation that i work operates these marine engines and is suffering from piston failures at around 1150 hrs total running time.I believe that the problem has not yet been resolved or fully investigated.They are rated at 860 hp at 2300 rpm for this installation
Have any of you out there...