Excellent pics, especially the last one - always wondered how "variable nozzles" worked !
 
Wow.. :D
thanks for that :) - only 2 years too late tho.. ;)
(when i was at engineering college doing a nvq in motor vehicle, i did a presentation on turbochargers and how they work... if only id known about VNT turbos... i would have got better marks :) )
 
very interesting.
5 year old thread re-incarnation :D expect a few more as i trawl tdi FAQ's