Ken, there are a few differences between the turbo and n.a. 1.9
engines.  The rod bearings/journals are wider on the turbo and the
cranks and rods are different.  The piston pins are larger diameter on
the turbo with a larger compression distance to make a stronger piston
at high boost/temps.
-Dana-

Ken Hunter wrote:
>
  About a
> week after I got my engine I got a call from the guy in Ruidoso who had
> pulled his motor and was bringing it back to our FLAPS in Albuquereque for
> warranty inspection. Turns out he had a broken #1 piston and trashed
> cylinder. They gave him a new motor and since he moved I don't know if he had
> any more problems. Scott Foss weighs in on this list sometimes since he moved
> but we haven't heard from him yet on this topic.
> I have collected most of the parts for the conversion except for the EGT
> gauge which I consider essential. I am even considering running ECO diesel
> style without the fuel enrichment aneroid for less stress on the motor. The
> 1.9NA at 5000-6000' altitude is not what I hoped it would be. As for the oil
> drain in the block vs the oil pan, maybe VW did this on the block to save $$?
> I thought there was a Vanagon oil pan that had the oil return boss cast in?
>
> Ken Hunter
> 82 Westy 1.9D
> 84 Jetta 1.5D
> 89 Mitsubishi van 2.4gas