QSB5.9-480 HO Marine Application(s)
 

I am planning on buying a new boat soon. Cummins powered of course!

2x QSB5.9-480 HO engines seems to be an awesome propulsion:
http://www.cmdmarine.com/Products/Re...SB/fr92132.pdf
and (page 18):
http://www.cmdmarine.com/documents/Q...glishHiRes.pdf

Like this one:
http://www.youtube.com/watch?v=FqVMkca4FaA
http://www.youtube.com/watch?v=D4Q-dsTDQgg
http://www.youtube.com/watch?v=uj5Mu...eature=related

Obviously, this engine has a lot in common with our 5.9l RAMs...

I was wondering if they use better components in a 480hp marine engine for reliability (compared to our truck engine)? Like different pistons, etc.

http://www.powerboatmag.com/eliminat...-eagle-xp.html

That exceptional fuel efficiency is largely the product of a pair of new-for-2009 turbocharged diesel engines from Cummins-MerCruiser attached to Mercury Racing NXT1 drives. Dubbed QSB 5.9, the 480-horsepower diesel engine is significantly lighter than the original Cummins 5.9 model, which also developed 480 hp.

“Basically, Cummins took their 5.9-liter truck motor and marinized it,” said Jake Fraleigh, sales manager for Eliminator Boats. “And the drives have a special saltwater protection application on them.

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I guess that explains something... but how can they make it lighter and yet add hp and torque, while remaining reliability?

I just bought a set of 480 QSB marine pistons for my
truck. Supposed to be a better piston.

my truck keeps wanting to go into the ohio river for some reason now [whistle]