I have both engines, one from an 86 Jetta TD and one in my current 91
ECOdiesel.  THe differences are the inj. pump has a boost enrichment
circuit which pumps more fuel into the engine when under boost pressure,
and the ECOdiesel inj. pump does not.  ECOdiesel puts out 59HP while the
TD puts out 69HP.  They are interchangeable as far as installing them
but I would not use an ECOdiesel in a vanagon.  It is only 7 more HP
than the non-turbo motor.  The purpose of the ECOdiesel was to reduce
emissions by pumping a little more air into the combustion chambers.
There is also a catalytic converter to burn soot before it goes out the
tailpipe.  Overall, the TD is better since it gets nearly 50 MPG and
puts out 10 more HP where the ECOdiesel only gets 42 MPG in the same
driving conditions and route.  I typically get 200-300,000 miles out of
these before it is time to do major overhaul work with synthetic lubes
and diesel fuel modifier additives.  The long blocks are the same with
many interchangeable parts.  The ECOdiesel inj. pump has a fast idle
position on the cold start cable to assist the idle when the AC is on!
It also has a fuel return to the fuel filter before sending excess fuel
back to the tank.  That helps if you are low on fuel and in winter warm
fuel goes to the filter to help warm the cold fuel from the tank.

TEMiller

Jim Felder wrote:

> It's been asked on the diesel list but not answered definitively.
>
> Horsepower difference?
>
> Injector pump is different, I know. But what about the turbo?
>
> What intake and exhaust does it use?
>
> Does the turbo setup require a modified engine mount?
>
> Anyone who can answer any of these questions, I would appreciate it.
> The application is, of course a vanagon.
>
> Jim
>
>