Was looking at the inards of 2yr old blown 1.7 today, it had a crack through No3 piston, the cause was something as simple as the shaft which operates the waste gate on the turbo had seized up resulting in the turbo over boosting the engine and blowing a piston. Then found out that another dealer had had two more with the same problem. Anyone who has tried this engine knows it is a great performer for its displacement and had tremendous torque, but seeing as its a modified Isuzu unit I suspect that the turbo was designed to operate in a relatively dry engine bay in a car. Now it finds itself in a damp salt laden atmosphere so this problem has arisen on three engines in this area alone, I know several forum members have recently bought these so I would suggest a periodic check of the shaft where it goes into the waste gate housing and a little lubrication wouldn't go amiss, not sure what to suggest as this bit gets very hot and ordinary oil will probably make a lot of smoke. But a little maintainance here could save a costly engine rebuild.