Note on the EMD turbos, I meant to say that the turbo and roots blower provided air flow to get the exhaust out of the engine.


Credit links:
YouTube:
A look back railroading in Binghamton, NY 1994 Part 7 final-Jay Winn
   • A look back  railroading in Binghamto...  

Conrail in the 1990's Vol 17-Jay Winn
   • Conrail in the 1990's Vol 17  
A bad day in Utica- Jay Winn
   • A bad day in Utica  
Remembering Conrail Part 102 Utica, NY May 1999 - Jay Winn
   • Remembering Conrail  Part 102     Uti...  
Remembering Conrail Part 95 Utica, NY December 1998 - Jay Winn
   • Remembering Conrail  Part 95   Utica,...  

Combined Turbo Supercharger? 2-Stroke EMD Ship Engine- Fix&Forget
   • Combined Turbo Supercharger? 2-Stroke...  

Image links:
BN SDP40 Keon McGarvey
https://commons.wikimedia.org/wiki/Ca...
https://creativecommons.org/licenses/...

CSX SD40-3 Dan CC BY-SA 2.0
https://commons.wikimedia.org/wiki/Ca...