Hi,
well there are a few things I don´t like about the TD4 "Puma"
- not enough torque
- to high revs
- fuel efficiency (even though I am currently an average of 0.6l/100km lower than what was specified for a new Defender with the 2.4l engine)
I was never a friend of small engines either and the way manufacturers are downsizing isn´t what´s needed in an off road capable truck if you also want to tow a trailer.
Sometime last summer I had put that plan of swapping the engine on the back burner as I could´t get hold of a factory new FORD 3.2 Tdci and the other engine I had in mind wasn´t anywhere near market introduction (which it still isn´t, sadly, even though the prototypes ran great).
Then I trailered the Porsche 911 Safari of Eric Brandenburg all the way from Hamburg to the Nador (Morocco) and back for the Africa Eco Race 2012 and kept cursing at that bloody 2.4l Puma.
I have now found two pretty good engines that´ll nicely fit the Defender and am now working down the list to see if all the parts I need are available and at what cost.
For the project it´s also important that the engine, apart from having more more power and torque, can take some abuse and will match modern emission standards.