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Post by Mark R. on Jul 30, 2014 1:21:01 GMT -5
Simple question .... what prime mover did the RS-18u have in it ?
Mark.
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Post by mandealco on Jul 30, 2014 3:59:47 GMT -5
Hi Mark
They had a V-12 251 prime mover, same as in the RS-11. There were no significant changes, if any, to the prime movers when CPR rebuilt the RS-18s in the 1980s.
Cheers
Steve
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Post by emd16645 on Jul 30, 2014 3:59:55 GMT -5
The RS18s were built with a 12 cylinder 251B prime mover. I can find no evidence that the RS18u rebuild program specifically replaced the prime mover.
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Post by tjmfishing on Jul 30, 2014 6:05:54 GMT -5
They never replaced the prime mover, however they rebuilt the block itself, but never changed it in any significant way.
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Post by iomalley on Jul 30, 2014 8:53:09 GMT -5
CP (and CN in the HR616s) toyed with different injectors in their big Ms to vary the HP, but I think everything was returned to normal in the end. I had heard that CP even changed the injectors in some RS18us briefly to test 2000hp output, but I can't verify this. The HR-412 had more HP from the V12, so its not a stretch to ask more of the block...
The RS18us had a 'dash 2' style electrical system with removeable solid state electrical 'cards' and a rudementary troubleshooting interface, and Steve, Taylor and Chris are correct with the engine type.
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