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[quote user="HR616"]The 7FDL cooling system can be modified to help meet Tier 2 standards, as seen on several modernized GE units.[/quote] Can you help with an example, please? All I have seen is Tier 1+ in locomotives, e.g. NS AC44C6M, the marine V228 engine (marine version of 7FDL9 with Tier 2. But Tier 2 marine allows higher emissions thaon locomotive Tier 2. [quote user="HR616"]The P42s do not have corner posts, as evidenced by several recent accidents. Upgrading the crashworthiness of a monocoque locomotive shell can be very difficult.[/quote] I agree, the corner posts were recommended by the Railroad Safety Advisory Board in a draft paper in 2003. It took some time to find out. Regards, Volker
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