Mercruiser 7.3 Diesel

[Argelia Long]

Everythingabout a Mercury Diesel engine is built for life on the water. Advanced turbocharging and injection technologies are precisely calibrated for marine performance, making easy work of moving large boats. Lightweight designs further boost efficiency so you can venture farther and stay out longer.

There are Mercury Diesel engines available to power an array of boats and propulsion systems, including sterndrives, inboards and Zeus pods. All backed by the Mercury global service network. You decide where to go and what adventure looks like, and Mercury gets you there.

Mercury Diesel engines run clean and run easy, without the harshness or fumes from traditional diesels. They can also deliver up to 50% better fuel efficiency compared to gas engines of the same horsepower.

Mercury SmartCraft digital technologies refine the entire boating experience to ensure every day on the water reaches its full potential. From intelligent gauges and displays to advanced systems that make boat control easy, SmartCraft gives you the power to do more with your time on the water.

Digital Throttle & Shift (DTS) controls deliver silky-smooth shifting and instant throttle response, with zero hesitation. Integrated controls for select SmartCraft technologies make boating even easier.

Intuitive joystick controls provide digital anchoring at the touch of a button and 360 ̊ maneuverability in tight spaces when you need it most. In open water, the Auto Heading and Route features let you lock in your course for simplified control.

VesselView displays transform the helm of the boat into the ultimate command center by linking together the Mercury propulsion system with compatible onboard accessories. You can monitor engine data, control SmartCraft digital technologies, view charts and sonar, and even operate onboard entertainment systems all from one intuitive touchscreen interface.

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Go the Distance

Cummins MerCruiser Diesel offers TDI series engines for use in either inboard or sterndrive applications. I tested twin 350 hp TDI 4.2 350s hooked to Bravo Three XR sterndrives turning 25-inch-pitch XR propsets through 1.81:1 reductions. These were installed in an 11,000-pound Statement Marine 37 carrying 100 gallons of fuel and a crew of six grown men. After computing the fuel burn it was easy to understand why Chris Fertig chose CMD TDI diesels to power this Statement 37 in a bid for the 760-mile endurance test that is the Bermuda Challenge (boatingmag.com/bermudachallenge). These are great numbers.

Our most economical cruising speed occurred at 2,700 rpm. Here the engines delivered 28 mph burning 11 gallons per hour for a net economy of 2.22 miles per gallon. Throttling up to 3,000 rpm, we cut through the water at 35 mph burning 15.2 gallons per hour total for a net economy that still exceeded 2 miles per gallon. As propped, the TDI 4.2 350s turned 4,160 rpm at wide-open throttle, delivering a 51 mph top speed burning 40.8 gallons per hour and an economy of 1.1 miles per gallon.

Key Features

1. Twin turbochargers help deliver plenty of power and torque throughout the rpm band.

2. Common-rail fuel delivery makes for low smoke, low noise and exceptional economy.

3. Compact footprint and a svelte power-to-weight ratio make these great candidates for repower and replacement applications.

When you change your oil, you should also check your oil pump, filter, and the other components of the lubrication system. PowerBoatSupply.com carries replacement MerCruiser oil filters that will help keep your fresh diesel oil clean. Since oil drain screws can wear out and cause a devastating leak, we carry those, too. Of course, the most important product for any oil change is the oil itself.

Your boat gives you a lot, whether you use it for pleasure, sport, or work. Part of the deal is that you have to give something back, which means keeping on top of routine maintenance tasks like oil changes.

Mercruiser Inboard Diesel Engines exemplify the fusion of cutting-edge technology and maritime excellence. Renowned for their exceptional efficiency and impressive torque, these engines are favored by boaters seeking robust performance and fuel economy. The diesel engines are crafted with precision, employing advanced turbocharging and intercooling mechanisms to ensure optimal combustion and power delivery.

CHARLESTON, S.C.--(BUSINESS WIRE)-- Cummins and Mercury Marine will transition from their Cummins MerCruiser Diesel Marine (CMD) joint venture to a strategic supply arrangement between the two companies to more effectively and efficiently serve customers in the global diesel marine market.

Growth in the marine market is strategically important to Mercury Marine and Cummins. Cummins and Mercury Marine will each utilize their respective parent company resources to develop, manufacture, sell, distribute and service diesel engines, drives, pods and related parts, accessories and services.

Cummins will continue to use Mercury Marine drives and control systems in conjunction with its extensive offering of mid-range and heavy-duty marine engines. This move will leverage Cummins' strong global distribution footprint and create additional synergy with other Cummins recreational marine products, including marine generator sets offered under the Cummins Onan brand.

About CMD

Based in Charleston, South Carolina (USA), Cummins MerCruiser Diesel is responsible for designing, manufacturing and providing reliable after-sales support worldwide for diesel marine propulsion products. It offers a broad range of power, with available ratings from 40-715 hp for recreational applications and 150-715 hp for commercial use. Cummins MerCruiser Diesel is a joint venture between Cummins Inc. and Mercury Marine and can be found on the internet at www.cmdmarine.com.

About Cummins

Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems, controls, air handling, filtration, emission solutions and electrical power generation systems. Headquartered in Columbus, Indiana, (USA) Cummins employs approximately 40,000 people worldwide and serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor locations and approximately 6,000 dealer locations. Cummins earned $1.0 billion on sales of $13.2 billion in 2010. Press releases can be found on the Web at www.cummins.com.

Mercury Diesel QSD series engines feature common rail or electronic injection fuel systems to provide increased power-to-weight ratios, cleaner starts and less noise for a superior boating experience.

The QSD line of engines are built lightweight, compact and provide increased power for impressive acceleration, throttle response and quicker planing times. QSD engines are compatible with SmartCraft electronics, SeaCore corrosion protection, Axius and Zeus joystick control systems and Mercury's effortless Digital Throttle & Shift systems.

The Mercury Diesel TDI series provide an automotive-like quality and reliability and are backed by Mercury's ultimate global service network. Exceptional torque at low engine speeds provides excellent acceleration and a reduction in time to plane.Mercury's Volkswagen-based TDI engines are lightweight, compact and lead the industry in horsepower to weight ratio. They utilise clean and modern diesel technology that provides a quiet, smooth ride with virtually no smoke or odors. Plus, the TDI line of engines provide impressive fuel economy, so you can stay on the water longer.

These engines features impressive acceleration and precise throttle response, with enhanced fuel economy delivered by the full-authority electronic engine control. Full specifications may be downloaded by clicking the 'PDF' link.

For more than 45 years the name MerCruiser has meant sterndrive performance. The Alpha One is the most popular sterndrive in the world, whilst the brawny Bravo Series drives are perfectly suited to high-torque diesel applications, whether in a heavy cruiser or a high-performance RIB. Reliable performance means more family fun year after year without missing a beat.

Mercury Diesel TDI engines provide an automotive-like quality and reliability; and have exceptional torque at low engine speeds to provide excellent acceleration and a reduction in time to plane. They are lightweight, compact and lead the industry in horsepower to weight ratio.

The TDI line of engines are built lightweight, compact and provide increased power for impressive acceleration and throttle response and quicker planning times. Mercury Diesel TDI engines are compatible with Mercury's industry-leading systems, including Digital Throttle & Shift (DTS), SmartCraft gauges and controls and SeaCore corrosion protection, Axius joystick control and a full line of drives and props.

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