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    • Cummins Marine Forum Topics
    • QSB5.9 vs. QSL9

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 4 years ago

      November 19, 2019 at 3:12 pm Hi gurus – I’m comparing two boats right now, and am hoping for some feedback on engines. Both boats displace about 65,000 pounds and are single screw. One has a QSB5.9 330. The other has a QSL9 330. They are both 2007 boats, and each of them has around 2,500 hours of operation. Assuming that the maintenance has been equivalent on both boats (which is not necessarily the case, but indulge me in that assumption for the time being),…

      Started by: Steven Sugarman in: Cummins Marine Engines


      1 Reply
      November 19, 2019 at 6:48 pm The 2 engines should NOT be compared in anyway shape or form.. It would be like comparing a Chevy Silverado 1500 to a HD 3500 trying to move 50 ton’s of concrete from one job site to another… Comparisons below are based on a SEABOARD Proper set-up and maintenance from Day One. The QSB 5.9 is a 2800 RPM 330HP engine with a realistic cruise power in a vessel like this of about 150 hp at on about 2100 RPM .. The engine is a paren…

      Last Post by: Tony Athens posted: 4 years ago

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