Engine Comparisons: VGT500

 

 

This week, we will be highlighting several of our engine models and be comparing them with others that are in the market. Our engines stand on their own merits. All data on other engines is available online. Comparisons are based on closest models / ratings for each manufacturer.

We start with our flagship product: The MarineDiesel VGT 500. Using the Duramax 6.6L as a base, we have created the lightest, smallest, and most powerful marine engine in the market today. Ideally suited for small, very fast craft, the VGT 500 delivers the high performance standards that simply leave other engines lacking.

Figures are based on commercial rating, when possible (Some manufacturers only have one rating, others have multiple ratings.)

Some specifications:

Engine Comparison MarineDiesel Volvo Cummins Yanmar Iveco / FPT
Engine Model VGT500 D6 435 QSB 5.9 6LY3-ETP N67 560
Retail Price (Manufacturer’s Suggested Retail Price, online. Prices may vary significantly. Add’l discounts may be avail) € 41,552 € 57,976 € 44,144 € 41,905 €40,929* (UK Only, Sale Price)
BHP 500 435 472 480 500
kW 373 320 352 353 368
RPM 3600 3500 3400 3300 3000
Cyl 8 6 6 6 6
Displacement (l) 6.6 5.5 5.9 5.8 6.7
Bore / Stroke (mm) 103/98 103/110 102/120 106/110 104/132
Maximum Torque Nm 1130 1040 1278 1280 1500
Time Between Overhaul (hours) 2500 1000 2000 1000 1500
Time Between Maintenance (hours) 100 50 75 50 100
Dry Weight 510 699 612 640 650
Fuel Cons at Top Speed g/kWh 230 208 232 228 215.5
Power / Weight kW/kg 0.73 0.46 0.58 0.55 0.57
Euros per kW € 111.40 € 181.18 € 125.41 € 118.71 € 111.22
Overhaul Cost (60% of New) € 24,931.20 € 34,785.60 € 26,486.40 € 25,143.00 € 24,557.40
Cost at 10,000 hours (Purchase, Overhauls, and Maintenance) € 141,279 € 405,836 € 176,579 € 293,339 € 204,647
Fuel Cost at 10,000 hours, Fuel EUR 0.80 / Litre (Calculated at 435 hp) € 710,476 € 633,905 €733,728 € 696,830 €656,761
Total Cost of Ownership 10,000 hours € 851,755 € 1,039,741 € 910,310 € 990,169 € 861,408

So, engine weights are listed in the table above. What about engine size?

(L) X (W) X (H), in mm

MarineDiesel VGT 500: 779 X 825 X 973 (Note: MarineDiesel engines always allow for remote location of some components, such as the grid cooler, filters, or starter motor. Dimensions, particularly height, can often be reduced considerably or shifted around to a great extent.)

Volvo Penta D6 435: 1,456 X 753 X 897

Cummins QSB 5.9: 1,255 X 836 X 858

Yanmar 6LY3 – ETP: 1,458 X 801 X 793

FPT N67 560: 1,063 X 843 X 766

 

Curves:

When comparing power, and especially torque, curves, you need to keep in mind how the vessel will be used. All engine manufacturers rate their engines differently, many times with several different ratings under a single model. Others, like MarineDiesel, can change the ECU and engine programming to suit a vessel’s mission. The curves below are the most common ratings, but when reviewing, attention must be given that these curves can be different or altered due to rating.

MarineDiesel VGT 500:

Volvo Penta D6 435:

d6 pwr torque

Cummins QSB 5.9 472:

qsb power torque

Yanmar 6LY3-ETP:

yanmar 6ly3etp curves

FPT N67 560:

n67 560 curves