Macce
New member
I have a new to me Nord Star 28 /D6-330DPH, which I bought last August. I had about 1,5 moths time to use it before winterizing it. It is year model 2010.
All good, but maths as comes to consumption, do not sum up. With half tank and some gear on, it tops 35,5 - 36 kn, which is as it should. At 2500 rpm.the speed is around 22,5 kn. Test reviews tell lowest planin speed consumption being in 1.3 - 1,4 l/nm range. Now, my measured average consumption was almost 1,8 l/nm, that even involves parts driving in displacement speeds. I was avoiding hanging in semi-planing speeds, mostly planing in 2500 -2700 rpm range, and when slow, always in the range of 1000-1300 rpm. With 1200 rpm or so, it should take no more than one litre /nm.
With my previous boats I was easily able to meet the reported test consumption rates. This time rpms match for both cruising and top speed, but the consumption is selveral 10% higher than tested by the magazines. Interestingly, I found two other owners reporting online exactly the same cruising fuel flow figures, 1,8 l/nm
Anyone here with the same engine and similar boat/speed range, what figures do you get? Or, can the (playsibly) elevated fluel consumption be a symptom of something odd hapening in the engine? Acceleration is good, no smoke, no vibrations. My previous boat, with D4 260 took around 1,1 l/nm average, similar top speed of 35 - 36 kn.
All good, but maths as comes to consumption, do not sum up. With half tank and some gear on, it tops 35,5 - 36 kn, which is as it should. At 2500 rpm.the speed is around 22,5 kn. Test reviews tell lowest planin speed consumption being in 1.3 - 1,4 l/nm range. Now, my measured average consumption was almost 1,8 l/nm, that even involves parts driving in displacement speeds. I was avoiding hanging in semi-planing speeds, mostly planing in 2500 -2700 rpm range, and when slow, always in the range of 1000-1300 rpm. With 1200 rpm or so, it should take no more than one litre /nm.
With my previous boats I was easily able to meet the reported test consumption rates. This time rpms match for both cruising and top speed, but the consumption is selveral 10% higher than tested by the magazines. Interestingly, I found two other owners reporting online exactly the same cruising fuel flow figures, 1,8 l/nm
Anyone here with the same engine and similar boat/speed range, what figures do you get? Or, can the (playsibly) elevated fluel consumption be a symptom of something odd hapening in the engine? Acceleration is good, no smoke, no vibrations. My previous boat, with D4 260 took around 1,1 l/nm average, similar top speed of 35 - 36 kn.
