by Jamshid
you do realize a new prime mover with all the associated electronics and accessories costs on the order of 3/4 to a million dollars...I think Maximum 500000 $ is more correct for a new medium speed diesel engine rated around 3250 hp and if the power held the same the accessories will suffice. (no need to change them)
When repowering take places in overhaul schedule the existing diesel engine overhaul cost could be subtracted. (so the total extra money to be invested on a overhauled locomotive with new diesel engine will be less than 400000$ in compare with an overhauled loco with its own old diesel engine. The repowered engine will be virtually as economic as a brand new locomotive (with about 2.5 million $ price) and will be trackworthy for extra 10 to 15 years in comparing with those which have old engines)
High speed diesel engines are preferred now, because with the same thermal efficiency and power their price are about half of medium speed ones and mid-age repowering is justified for them. (After 15 years of operation repowering with in hand new engines is prescribed!)
Due to these facts the price of second hand locomotives are so low! Because they are not economical at all but for some regional or second class railroads.
But just for fun I tell you there is somewhere that still produces locomotives with 645E3 engines in Turkey, follow the link! (As Allen writes GRIN )
In turkish but specifications can be found out easily:
http://www.me.metu.edu.tr/~ergin/TCDD/DE33000/
In english: (TCDD roster)
http://www.trainsofturkey.com/modern_eng_overw.htm
New GT26CW photo:
http://www.trainsofturkey.com/diesel/DE ... msas_l.jpg