Several days back on another forum someone mentioned that UP is having at least 3 SD60Ms re-engined with the 12-cylinder 710ECO, making them SD32ECOs, which would essentially be “SD59Ms”. A 16-710G SD60M is a strange choice for a 12-710ECO. I would have expected SD40-2s to be more suitable for this rebuild since they’re already in the 3,000hp range, and a SD60M would be losing 600hp too. I wonder what UP would do with these locos? A wide cab SD60M isn’t exactly the best choice for local and yard service. I guess UP would use these 12-710ECO SD60Ms on the mainline. Maybe EMD should come out with a 16-710ECO if the goal is to rebuild 20 yr old 60-series locos.
Lyon_WonderSeveral days back on another forum someone mentioned that UP is having at least 3 SD60Ms re-engined with the 12-cylinder 710ECO, making them SD32ECOs, which would essentially be “SD59Ms”. A 16-710G SD60M is a strange choice for a 12-710ECO. I would have expected SD40-2s to be more suitable for this rebuild since they’re already in the 3,000hp range, and a SD60M would be losing 600hp too. I wonder what UP would do with these locos? A wide cab SD60M isn’t exactly the best choice for local and yard service. I guess UP would use these 12-710ECO SD60Ms on the mainline. Maybe EMD should come out with a 16-710ECO if the goal is to rebuild 20 yr old 60-series locos.
EMD already builds a 16-710ECO, its called a SD70M-2. The SD60s are ready to be downgraded to lesser services, with tightening emissions requirements the choices are to upgrade the diesel engine used in them, or scrap them. The UP is going to see if the upgrade will produce enough savings to justify the expense of upgrading them, if not they will be scrapped. The reason for going with the 3000hp 12-710ECO rather than the 16-cyl version is related to the greater cooling capacity needed to meet the tighter emissions standards. The existing radiator size is large enough for the 12-cylinder version, although it has to be reworked to create a split system. To go with a 16 cylinder engine would require the installation of large flared radiators like the SD70M-2 has.
8 UP SD60M's are currently at London or enroute for rebuilding.
Bryan Jones
In a similiar vein,I also read recently that UP is having some retired SD50's rebuilt by Progress Rail with 3500HP CAT prime movers. These are also intended for road service.
"I Often Dream of Trains"-From the Album of the Same Name by Robyn Hitchcock
carnej1 In a similiar vein,I also read recently that UP is having some retired SD50's rebuilt by Progress Rail with 3500HP CAT prime movers. These are also intended for road service.
well, thats only partially correct. UP is recieving 5 model PR30C's from Progress Rail under a 1 year lease/test period. These units are rebuilt from SD40-2's and are powered by 3005hp CAT diesels.
NS is recieving 3 model PR43C's, rated at 4100hp. These units are powered by 2 CAT diesels, a 700hp C-18 and a 3400hp C-175. These are rebuilt from SD50's and the first 2 units are already on the property with the 3rd being completed at the Progress Rail facility in Mayfield,KY.
beaulieuLyon_WonderSeveral days back on another forum someone mentioned that UP is having at least 3 SD60Ms re-engined with the 12-cylinder 710ECO, making them SD32ECOs, which would essentially be “SD59Ms”. A 16-710G SD60M is a strange choice for a 12-710ECO. I would have expected SD40-2s to be more suitable for this rebuild since they’re already in the 3,000hp range, and a SD60M would be losing 600hp too. I wonder what UP would do with these locos? A wide cab SD60M isn’t exactly the best choice for local and yard service. I guess UP would use these 12-710ECO SD60Ms on the mainline. Maybe EMD should come out with a 16-710ECO if the goal is to rebuild 20 yr old 60-series locos. EMD already builds a 16-710ECO, its called a SD70M-2. The SD60s are ready to be downgraded to lesser services, with tightening emissions requirements the choices are to upgrade the diesel engine used in them, or scrap them. The UP is going to see if the upgrade will produce enough savings to justify the expense of upgrading them, if not they will be scrapped. The reason for going with the 3000hp 12-710ECO rather than the 16-cyl version is related to the greater cooling capacity needed to meet the tighter emissions standards. The existing radiator size is large enough for the 12-cylinder version, although it has to be reworked to create a split system. To go with a 16 cylinder engine would require the installation of large flared radiators like the SD70M-2 has.
Last year EMD had EMDX 9501, one of the early SD60MACs, rebuilt to SD70ACe standards, including flared radiators and relocating the dynamic brakes behind the radiators. NS's CAT-engined SD50 rebuilds have flared radiators too, though not as large as EMD's.
Lyon_WonderLast year EMD had EMDX 9501, one of the early SD60MACs, rebuilt to SD70ACe standards, including flared radiators and relocating the dynamic brakes behind the radiators. NS's CAT-engined SD50 rebuilds have flared radiators too, though not as large as EMD's.
But the rebuild of EMD 9501 was not as a locomotive, but rather as an engine test bed. It wasn't economic to rebuild 9501 sixteen years ago, it certainly wouldn't be now. The alternator is connected to the dynamic brake grids as a load test apparatus.
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