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Wartsila’s User Group Forums 50 SG Engine 18V50SG “A” Series Cylinder Head Cracking Reply To: 18V50SG “A” Series Cylinder Head Cracking


Hello Dave,

How are you?

In one of five 20V31SG sufered a damage in one cylinder head. Motor was tripped by “Cylinder in CCO mode”

An inspection was performed. a Crack in cylinder head of one cylinder was found. After that, the inspection was deepened and the following issues were found.

– Damage in PCC valve (stem damage)

– Strike in prechamber nozzle

– Damage in piston and cylinder liner

Could you please let me know if your motors continue with these issues about cracks? Did you received any feedback from manufacturer?

Thanks for any feedback