I'm led to believe that incorrect gaskets were fitted to some vehicles and as Ford doesn't know which ones were affected, (difficult to believe that) so
all gaskets are being replaced with the correct ones, these engines produce a lot of power and as they are turbocharged the compression ratio is a significant factor. They are capable of running at overboost pressures for a while, if this has been done a lot and the engine has got very hot, ie, at track days and the like, there has been an issue with either the head gasket leaking, or the engine getting so hot that the head has warped.
Displacement: 138 cu in, 2261 cc
Maximum torque: 440Nm (350 lb-ft @ 3200 rpm)
Maximum power: 257kW (350 hp @ 6000 rpm)
Already aftermarket providers are claiming outputs of 294 kW and 560 Nm of torque, not something that I'm ever likely to do!
I heard from a friend today that they knew of at least one in Canberra was leaking around number 2 cylinder, but I don't know if the head was replaced.