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Size Matters: Comparisons Marinediesel Versus the Competition

 

On this site, we have often written about the compact size of the Marinediesel VGT Series, and how our engines will fit into cramped engine compartments when other engines will not. What is the real size difference? See for yourself in the table below!

Manufacturer

Length (mm) Width (mm) Height (mm) Total (m3) % Difference Weight (kg)

Marinediesel

VGT Series

779 825 917 0.589 0%

510

Cummins QSB 6.7

1097 910 857 0.856 + 36.955 %

659

Cummins QSB 5.9

1036 836 831 0.72 + 20.015 %

658

FPT N67

1089 724 786 0.62 + 5.128 %

600

Volvo Penta D6

1037 773 885 0.709 + 18.49 %

699

Yanmar 8LV-370

1133 884 823 0.824 + 33.26 %

435

Yanmar 6LY3 – STP

1071

802

793

0.799

+ 30.259 %

640

Yanmar 6CX-530 1340 886 934 1.11 + 61.33 %

837

 

 

 

Best of 2014 – VGT Series vs Yanmar 6LY3 Series. How do we compare?

 

 

We wish all MarineDiesel customers a happy holiday season. Our factory will close from December 22 through January 5. For the balance of the year, we will be re-running our most popular articles from 2014, based on the number of visitors. We will start new daily articles in the New Year. We hope that you continue to find them interesting.

The VGT Series of marine engines is MarineDiesel’s flagship product. We originally aimed to make the lightest, most powerful, most reliable engine available in the market, and we succeeded where others have not.

So, how does the VGT Series compare to others?

Price:

MarineDiesel VGT: Mid-range

Yanmar 6LY3: Inexpensive to Mid-range

*Price will vary greatly based on many factors, including import duties and dealer markups, but in general

 

Cost of Spares:

MarineDiesel VGT: Mid-range

Yanmar 6LY3: Expensive

 

 

Rating:

MarineDiesel VGT: Commercial / Military Medium to Heavy use

Yanmar 6LY3: Recreational

 

Engine Block:

MarineDiesel VGT: V-8

Yanmar 6LY3: Inline 6

*Inline cylinder arrangements tend to produce higher levels of vibration

 

Weight:

MarineDiesel VGT: 500 kg

Yanmar 6LY3:640 kg

 

Fuel Consumption:

MarineDiesel VGT: Max 220 g / kWh

Yanmar 6LY3: Max 221 g/kWh

 

Curves:

vgt400 fuel

vgt400 curves

 

Yanmar 6LY3 ETP Power, Torque, and Fuel Curves

Yanmar 6LY3 ETP Power, Torque, and Fuel Curves

Engine Comparisons: VGT400

 

 

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.

This article is related to the MarineDiesel VGT 400. 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 4oo 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 400 D6 400 QSB 5.9 6LYA-STP N60-400
Retail Price (Manufacturer’s Suggested Retail Price, online. Prices may vary significantly. Add’l discounts may be avail) € 34,857 € 34,520 € 35,258 € 33,407 € 29,957
BHP 400 400 420 370 400
kW 299 299 313 272 294
RPM 3600 3500 3400 3300 3000
Cyl 8 6 6 6 6
Displacement (l) 6.6 5.5 5.9 5.1 5.9
Bore / Stroke (mm) 103/98 103/110 102/120 106/110 104/132
Maximum Torque Nm 820 980 1231 1010 1060
Time Between Overhaul (hours) 3000 1000 2000 1000 1500
Time Between Maintenance (hours) 100 50 75 50 100
Dry Weight 500 699 658 530 595
Fuel Cons at Top Speed g/kWh 215 214 218 215 215
Power / Weight kW/kg 0.60 0.43 0.48 0.51 0.49
Euros per kW € 116.58 € 115.45 € 112.65 € 122.82 € 101.89
Overhaul Cost (60% of New) € 20,914.20 € 20,712.00 € 21,154.80 € 20,044.20 € 17,974.20
Cost at 10,000 hours (Purchase, Overhauls, and Maintenance) € 104,573 € 241,644 € 141,035 € 233,853 € 149,787
Fuel Cost at 10,000 hours, Fuel EUR 0.80 / Litre (Calculated at 370 hp) €566,887 € 564,250 € 575,086 € 556,952 € 557,407
Total Cost of Ownership 10,000 hours € 671,460 €805,894 € 716,121 € 790,805 € 707,194

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

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

MarineDiesel VGT 400: 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 400: 1,357 X 786 X 920

Cummins QSB 5.9: 1,255 X 836 X 858

Yanmar 6LYA – STP: 1,274 X 819 X 843

FPT N60 400: 1,349 X 843 X 788

 

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 VGT400:

VGT400 torque

VGT400 torque

Volvo Penta D6 400:

vp d6 400 curves

Cummins QSB 5.9 Curves:

cummins qsb 420 curve

Yanmar 6LYA-STP Curves:

yanmar 6lya curves

FTP N60 400 Curves:

FTP N60 curves

 

 

 

Engine Comparisons: VGT350

 

 

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.

This article is related to the MarineDiesel VGT 350. 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 350 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 350 D6 370 QSB 5.9 6LYA-STP N60-400
Retail Price (Manufacturer’s Suggested Retail Price, online. Prices may vary significantly. Add’l discounts may be avail) € 30,450 € 29,985 € 31,694 € 31,361 € 28,964
BHP 350 370 350 370 370
kW 261 272 261 272 272
RPM 3600 3500 2800 3300 3000
Cyl 8 6 6 6 6
Displacement (l) 6.6 5.5 5.9 5.1 5.9
Bore / Stroke (mm) 103/98 103/110 102/120 106/110 104/132
Maximum Torque Nm 820 980 1231 1010 1060
Time Between Overhaul (hours) 3000 1000 2000 1000 1500
Time Between Maintenance (hours) 100 50 75 50 100
Dry Weight 500 677 612 530 595
Fuel Cons at Top Speed g/kWh 215 216 219 215 225
Power / Weight kW/kg 0.52 0.40 0.43 0.51 0.46
Euros per kW € 116.67 € 110.24 € 121.43 € 115.30 € 106.49
Overhaul Cost (60% of New) € 18,270.00 € 17,991.00 € 19,016.40 € 18,816.60 € 17,378.40
Cost at 10,000 hours (Purchase, Overhauls, and Maintenance) € 91,352 € 209,899 € 126,779 € 219,531 € 144,822
Fuel Cost at 10,000 hours, Fuel EUR 0.80 / Litre (Calculated at 350 hp) € 534,429 € 532,898 € 544,371 €530,430 € 555,101
Total Cost of Ownership 10,000 hours € 625,781 € 747,797 € 671,150 € 749,961 € 699,923

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

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

MarineDiesel VGT 350: 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 370: 1,439 X 754 X 885

Cummins QSB 5.9: 1,255 X 836 X 858

Yanmar 6LYA – STP: 1,274 X 819 X 843

FPT N60 370: 1,349 X 843 X 788

 

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 VGT350:

vgt350 curves 1014

Volvo Penta D6 370:

d6 370 curves

Cummins QSB 5.9 355:

cummins qsb 355

Yanmar 6LYA-STP:

yanmar 6lya curves

FTP N60 370 (A2):

FTP N60 curves

 

 

Engine Comparisons: VGT450

 

 

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.

This article is related to the MarineDiesel VGT 450. 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 450 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 450 D6 435 QSB 5.9 6CXBM-GT N67 450
Retail Price (Manufacturer’s Suggested Retail Price, online. Prices may vary significantly. Add’l discounts may be avail) € 35,557 € 57,976 € 35,258 € 52,679 € 33,803
BHP 450 435 420 464 450
kW 336 320 313 341 331
RPM 3600 3500 3400 2700 3000
Cyl 8 6 6 6 6
Displacement (l) 6.6 5.5 5.9 7.4 6.7
Bore / Stroke (mm) 103/98 103/110 102/120 106/110 104/132
Maximum Torque Nm 980 1040 1231 1280 1500
Time Between Overhaul (hours) 3000 1000 2000 1000 1500
Time Between Maintenance (hours) 100 50 75 50 100
Dry Weight 510 699 658 856 650
Fuel Cons at Top Speed g/kWh 220 208 218 227 215.5
Power / Weight kW/kg 0.66 0.46 0.48 0.40 0.51
Euros per kW € 105.82 € 181.18 € 112.65 € 154.48 € 102.12
Overhaul Cost (60% of New) € 21,334.20 € 34,785.60 € 21,154.80 € 31,607.40 € 20,281.80
Cost at 10,000 hours (Purchase, Overhauls, and Maintenance) € 106,673 € 405,836 € 141,035 € 368,757 € 169,017
Fuel Cost at 10,000 hours, Fuel EUR 0.80 / Litre (Calculated at 420 hp) € 657,943 € 615,441 € 649,848 € 670,190 € 634,895
Total Cost of Ownership 10,000 hours € 763,943 € 1,021,277 € 790,882 € 1,038,947 € 803,912

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

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

MarineDiesel VGT 450: 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 6CXBM-GT: 1,390 X 901 X 989

FPT N67 450: 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 VGT450:

VGT450 curves 100714

Volvo Penta D6 435:

d6 pwr torque

Cummins QSB 5.9 420:

cummins qsb 420 curve

Yanmar 6CXBM-GT Curves:

yanmar 6cxbm curve

FPT N67 450 Curves:

FPT N67 450 curve

 

 

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

 

 

 

 

 

 

 

 

 

 

Who competes with MarineDiesel? Why should you care?

 

 

No doubt about it… The diesel engine market is highly competitive.

How are MarineDiesel engines different than those manufactured by our competitors?

How do we distinguish ourselves?

First off, we prefer to let our products speak for themselves. This article in no way is intended to speak badly about our competition. In fact, we are often the first to recommend a competing product if one of our products is not a good match to a customer’s project. In other words, if a competitor makes a product that is better suited to a particular vessel, we will recommend it over our own.

There are many factors that go into the decision as to which engine to choose. Every company does at least one thing very, very well. MarineDiesel tends to focus our products on one particular market segment: Small, high performance vessels. Though the competitors listed below all produce engines that may compete, some are better suited than others. Sometimes, price is the only determinant, and that is fine. We understand the marine business, and sometimes there are unrealistic demands made, or sacrifices made in the name of price. We are neither the cheapest in the market, nor the most expensive. We do, however, believe that we deliver the greatest value engines to our market segment. Every engine maker in the world has market segments or geographical regions where they have a distinct advantage.

In general, MarineDiesel competes closely with the four manufacturers listed below. Why should you care? As stated above, we believe that our products stand on their own merit. So we are even willing to tell you who our competitors are… Check them out and judge for yourself:

1. Volvo Penta: Volvo Penta makes very good quality engines, no doubt about it. They are also a very large company that can be somewhat inflexible when it comes to customization or highly specialized applications. Featuring a fairly robust service network, Volvo Penta is often very competitive in the leisure or recreational markets. This is how the vast majority of their engines are rated and they perform well in that market. We compete with the D6 and D9 series.

2. Yanmar: Yanmar make very reliable six cylinder engines, and they have a very good, well deserved, reputation in the recreational engine market. Though their service network is neither as large as some of the others, they tend to provide very good sales and service. Like Volvo Penta, customization can be difficult, and their engines are very seldom rated for any use other than recreational.

3. Cummins: Cummins has a long and storied history, and their extensive sales and service network is known for good service. Their current QSB 5.9 series competes very closely with MarineDiesel. This is the only competitor that can rate engines as anything other than recreational use. They are often very competitive in price and often are willing to customize.

4. FPT: FPT is the current incarnation of Iveco, and we are competing with them more and more often. Their service network is not as robust, with large regions of the world excluded. Their N70 model competes with our engines on some projects, and they are often a very competitive price.

So, how do we distinguish ourselves in a very crowded market?

  1. We manufacture the only V configuration engine in this market. All of the rest are inline six cylinder engines, whereas ours are all V-8.
  2. We manufacture the lightest marine engines in the market, with highest power to weight ratio.
  3. We manufacture the smallest (in terms of physical size) engines in the market.
  4. We are the only engine that is NEVER rated for simple recreational use. Medium commercial is our lowest rating.
  5. We are the only company in the market that can easily, and quickly, customize an engine, from rating to color of its’ paint. Being a much smaller company often carries advantages.

So, which engine is right for you? It really depends on your application and how the engine will be used. MarineDiesel’s customers appreciate our flexibility, performance, and having an option.

 

 

 

 

VGT Series vs Yanmar 6LY3 Series – How do we compare?

 

 

The VGT Series of marine engines is MarineDiesel’s flagship product. We originally aimed to make the lightest, most powerful, most reliable engine available in the market, and we succeeded where others have not.

So, how does the VGT Series compare to others?

Price:

MarineDiesel VGT: Mid-range

Yanmar 6LY3: Inexpensive to Mid-range

*Price will vary greatly based on many factors, including import duties and dealer markups, but in general

 

Cost of Spares:

MarineDiesel VGT: Mid-range

Yanmar 6LY3: Expensive

 

 

Rating:

MarineDiesel VGT: Commercial / Military Medium to Heavy use

Yanmar 6LY3: Recreational

 

Engine Block:

MarineDiesel VGT: V-8

Yanmar 6LY3: Inline 6

*Inline cylinder arrangements tend to produce higher levels of vibration

 

Weight:

MarineDiesel VGT: 500 kg

Yanmar 6LY3:640 kg

 

Fuel Consumption:

MarineDiesel VGT: Max 220 g / kWh

Yanmar 6LY3: Max 221 g/kWh

 

Curves:

MD VGT 450 Power and Torque Curves

MD VGT 450 Power and Torque Curves

MD VGT450 Fuel Curve

MD VGT450 Fuel Curve

Yanmar 6LY3 ETP Power, Torque, and Fuel Curves

Yanmar 6LY3 ETP Power, Torque, and Fuel Curves