Come to think of it didnt they have an issue with conrods coming through the block too?
IIRC, that was the D23 ... but ... the D40 has plenty of other "maladies" to make a similar impression on your wallet - like timing chains failing ....
The new NP300, being mainly ren@ult is somewhat worse... allegedly
If you CBA, have a nosy on the tube of u for the videos from West Yorkshire Engine Services - the list of problems, and their causes make for pretty scary watching