Hey guys, sorry for the delay. I had to take a time out and finish the basement. Happy wife= happy life.
I've been working on a couple items on the side and will report on those soon...biggest one being a nice wiring how-to for other swappers of the electronically-controlled tdis.
The first year of the electronic motors was the 1z or ahu engine code in the 1996-1997 Passat and carried through to the 1997-1999 Jetta. The motor I used (ALH engine code) is by far the most common tdi out there and was used in the Golf, Jetta, Beetle from 1999.5-2003 (avoid the 1998 Beetles with the very early version of this motor).
In the mid 90's the only vw diesels around were in Canada and were non-electronic idi turbo diesels (TD, not TDI) with 1.9L displacement...engine code AAZ. This is likely the motor John used in his 95. Great motor and easy to swap due to lack of wiring BUT it also isn't going to have the economy or power of a true tdi due to the lack of the electronically-controled injection pump.
From the late 70's through to the early 90's the vw diesels were all idi motors with either 1.5L (very early) or 1.6L displacement. Later years they turbocharged them for a little more power but the majority of them were naturally aspirated with ~50hp...you gotta remember these motors were moving around 2000-2500lb cars.
I put together a
nice chart to list out all the US tdi offerings.