This page is really what urq20v.com is all about.
The stock WX 2.1 liter 10 valve turbo was ok for its time, but really isn't enough anymore.
The 3B 2.2l 20v turbo used in the '91 200 quattro is a much better choice, but could be better.
Finding an ADU 2.2 liter 20 valve turbo engine from an would be nice,
but quite difficult here in the US, so this is my attempt at making one.
In a few hours the 3B is mine.
Here is the block.
For some reason, I never took a picture of the head the day I removed it.
The block cleaned up nice.
Northern European Automotive in Concord NH did the head work and assembled the engine.
I installed all the accessories.
Finally, the engine is installed.