The Cummins QSM11 Marine Engine Story
Time for some QSM11 education. As you read thru the below, always associate or think thisāItās 20 HP per gallon per hourāexample = burn 17.5 GPH = 350 HP that is being asked from the engine – and that is … Read More
āMarine Ageā the REAL age of a Marine Diesel Engine
Iāve been reading diesel engine ownerās manuals for over 2 decades and between the last three boats Iāve had, and the 100ās that I have worked on, this term never came up? Did I miss something? I think I coined … Read More
Propellers Move Boats, Engines Just Turn Them
Let’s remove the “serious math” …from of all the papers written on vessel movement and try to simplify the way a boat really moves forward and how that is directly related to fuel burn and MPG, and then explain it … Read More
Continuous Duty – A Different Perspective
When looking through engine literature and talking with sales people, often times the term “continuous duty” is brought up to help make a point or even sell one product over another. Here’s my perspective on the subject. Let’s take all … Read More
Understanding Low Power Troubleshooting
How engine loading and propellers interact with vessel performance When troubleshooting a LOW POWER symptom, or a low RPM issue on any high performance marine diesel that uses mechanical fuel injection (meaning NO Electronics, or a true diesel that can … Read More
Propping a Cummins Mechanical Diesel Engine
Mechanical engines, due to the nature of the mechanical, non-isochronous governors, must be propped solely on the attainable engine speed at full throttle, steady state conditions. Unlike electronic engines governors which have a precise, predetermined, and consistent governor set point; mechanical engines … Read More
Which Way Does My Engine Turn?
One will find that much of the confusion in the marine industry as to Right Hand / CW, or Left Hand/CCW rotation may have its roots based on the early definitions used by the Detroit Diesel Corporation (from just before … Read More
