qsm 11 long term

[joe seaverns]

I have a MIKelson Nomad with QSM11s .We run @1200-1300 rpm 95% of the time . which is 5 gal/hr and 91/2 -10 kts.

Does it hurt to run this way most of the time? Should I run higher from time to time? It is a displacement hull so more rpms does not yield much more speed,

thanks

Joe

Topic

[Tony Athens]

Low Speed Running of High HP per liter Marine Diesels

The answer is in the link below and it has not changed, although it should be updated to say “as the the max HP per liter has gone up quite a bit since I wrote this with the new electronic engines , IMO, low speed running to add longevity to an engines life is even more advantageous” -Trust me, your QSM11’s love it…————- Seeing 30,000 + hours over a 10 year year period on QSL9s & QSB 5.9’s is a proven fact with a head never pulled of an injector changed..QSL’s run at 5-7 GPH and QSB’s running at 3-5 GPH at cruise.

Low Speed Running & “Break-In” of Marine Diesels

Tony

[Author]

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