The d24T has the same bolt pattern as 5 and 6 cyl Audi engines (VAG) but different from the VW 4 cyl engines. The 1.9 can be made to fit the bellhousing of the 6 cylinder car (probably ZF transmission) but an adaptor plate will be needed.
Someone on the Turbobrick forum has put a 1.9 tdi into a 745 wagon but I believe it started life as a gas engine so the adaptor would be for a AW transmission probably.
If the 1.9 engine has ever been mated to a ZF 4hp22 transmission (maybe a Passat or some kind of Seat) then the bellhousing from that application could be swapped. It might be worth swapping the torque converter, valve body and the governor also as this would convert the Volvo wagon to have the best gearchanges etc for the 1.9 engine.
All the ZF 4hp22 transmissions are basically the same mechanically. The valve block and governor and torque converters make them adapt to different applications.
It would be less work to convert the D24T to D24TIC and keep the rest as is.
If you put a 1.9 tdi engine in, unless you convert the IP to mechanical you have to contend with the VW immobilizer system which means swapping the ECU and Dashboard also. This means you cant chip the engine and power would be about the same as the D24T.
Buy a nice more modern Eurodiesel car that are so easy to find there!!
good luck,
Steve
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