Yes, you will need to modify the sump to take the turbo oil-feed return line (SB@Brickwerks does a kit of parts I think)..
If its not a pickup the injection pump will stick up about an inch more than the current one, into the engine lid, just box it in.
Put a new needle bearing in the crank for the input shaft spigot.
You will have to decide whether to keep the exisiting manifold and turbo or get one off a JX... the exhaust too would be useful.
Good info in previous threads if you do a search and some in the Wiki too
Will a Passat 1.9td fit in my bus?
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1.9TD Syncro Doka / Syncro Kastenwagen / 16" Kombi Camper
Syncronaut No. 1
Goto the Wiki (top left blue bottom) and look for this in THE main menu
T25 Alternative Engine
There isn't a complete article on this conversion, but some info on bits 'n pieces and things to do look at TDi and Golf Petrol too
But in the archives here must be a fairly complete run-down - the main choice is whether to use the close-coupled AAZ turbo (and fabricate an exhaust) or use the JX (1.6TD) and the std diesel TD exhaust system.
If you get a good AAZ you have a good engine for a T25 - Full Stop!
T25 Alternative Engine
There isn't a complete article on this conversion, but some info on bits 'n pieces and things to do look at TDi and Golf Petrol too
But in the archives here must be a fairly complete run-down - the main choice is whether to use the close-coupled AAZ turbo (and fabricate an exhaust) or use the JX (1.6TD) and the std diesel TD exhaust system.
If you get a good AAZ you have a good engine for a T25 - Full Stop!
The 80-90 Tech Wikipedia Your 1st port of call

1.9TD Syncro Doka / Syncro Kastenwagen / 16" Kombi Camper
Syncronaut No. 1
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- the main choice is whether to use the close-coupled AAZ turbo (and fabricate an exhaust) or use the JX (1.6TD) and the std diesel TD exhaust system.
Harry does this mean i could remove the existing turbo and exhaust manifold that bolts on to the head and then refit to the aaz .I have a M11 1.6td golf engine fitted in the van that is running fine after a head gasket change and spigot bush oil seals replaced.But smokey on start clears when hot.Sorry if i have hijacked your reply but it is a learning curve for me.I noticed when i removed the cylinder head there was just four bolts that screwed into the turbo manifold this enabled to lift of the cylinder head.I am considering to replace the engine for a AAZ.
Harry does this mean i could remove the existing turbo and exhaust manifold that bolts on to the head and then refit to the aaz .I have a M11 1.6td golf engine fitted in the van that is running fine after a head gasket change and spigot bush oil seals replaced.But smokey on start clears when hot.Sorry if i have hijacked your reply but it is a learning curve for me.I noticed when i removed the cylinder head there was just four bolts that screwed into the turbo manifold this enabled to lift of the cylinder head.I am considering to replace the engine for a AAZ.
Smokey when starting which clears is common, can be turbo seals or valve guide seals if its blue smoke or glo plugs if black smoke with less easy starting.
I haven't seen close up the 'close coupled' solution, if that is the right word for it, but as I said wll try to find time to trawl the archives. The JX solution has four bolts too, very expensive ones (£13 each)...
I will try to get someone else who knows the alternative arrangement better than me to post, perhaps we need some photos to illustrate the two arrangements
I haven't seen close up the 'close coupled' solution, if that is the right word for it, but as I said wll try to find time to trawl the archives. The JX solution has four bolts too, very expensive ones (£13 each)...
I will try to get someone else who knows the alternative arrangement better than me to post, perhaps we need some photos to illustrate the two arrangements
The 80-90 Tech Wikipedia Your 1st port of call

1.9TD Syncro Doka / Syncro Kastenwagen / 16" Kombi Camper
Syncronaut No. 1