Your needs are specific when it comes to marine power...like toughness and dependability...fuel efficiency and performance. These are the foundations on which Cummins has built their business in addition to quality service, parts availability and expert technical assistance at ports of call around the world.

Cummins success in the marine market includes over eighty years of experience. Today, with propulsion and auxiliary engines with as much as 2300 horsepower (1716 kW) and as much as 6677 ft-lb of torque (9054 N·m), Cummins powers generating sets and pump units...gill netters and ferries...yachts and tugboats... fishing boats, fire boats, seiners, and crew boats...all over the world.

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CUMMINS MERCRUISER ENGINES  -- INBOARDS & STERNDRIVES

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Cummins 6BT Marine Conversion

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The Dodge Cummins 6BT series is an inline six cylinder diesel built rugged for serious hard work, and used worldwide in truck, marine and industrial applications. It is a low RPM, high torque, and a very reliable engine. Even the 160 HP version produces over 400-ft. lbs of torque. This means your boat can turn a large propeller at slower engine speeds than with gas power for higher cruising speeds, better economy, longer engine life, and more power in heavy seas. In marine application, this engine will weigh approximately 1100 lbs.

Need something different than our standard kit? Our conversion kits can be used in keel cooled, dry exhaust, and other applications. We can supply necessary parts for many different applications. Could you use A raw water pump along with the one for the engine, for bait well etc? Our raw water pump is mounted where the power steering pump mounts on side of engine, and is gear driven. If you need a second pump we can mount on front of engine. Tell us what you need, and we will price out kit to your specs.

Are you tired of paying high prices for marine parts? If any parts are ever needed, belts, hoses and engine parts can be found at your local discount part stores!

Key Benefits

• Low RPM, high torque
• Very reliable engine
• Better economy
• Longer engine life
• Greater power

Material of construction:

• Aftercooler-copper nickel/copper fabricated
• Bell Housing Adapter for SAE#3 Transmission Plate-steel/fabricated
• Engine Mounts-steel/fabricated
• Exhaust Elbow Assembly 4"-fabricated SS
• Exhaust Manifold-steel/fabricated
• Heat Exchanger-copper nickel/copper, fabricated
• Raw Water Pump-cast/brass
• Thermostat Housing-fabricated/SS
• Turbo Air Out Piping -fabricated/steel option for SS
• Water Cooled Turbo Housing-cast iron

READY TO REPOWER?

BEAT THE HIGH COST OF NEW DIESELS WITH A DODGE CUMMINS CONVERSION!
If you can’t justify the high cost of repowering with new diesels, then it’s time to convert a truck engine to a marine engine, with our marine conversion kit. Savings of 40% to 50% can be realized over the cost of a new diesel marine engine! Diesel engines have many advantages as marine power plants, including longer life, better fuel economy, less maintenance and higher reliability. Since diesel fuel has a higher flash point than gasoline, it is also a safer fuel to use. Most of the time, diesel fuel also offers considerable savings at the fuel pump. The Dodge Cummins 6BT series is an inline six cylinder diesel built rugged for serious hard work, and used worldwide in truck, marine and industrial applications. It is a very reliable engine with low RPM and high torque. Even the 160 HP version produces over 400-ft. lbs. of torque. This means your boat can turn a large propeller at slower engine speeds than with gas power for higher cruising speeds, better economy, longer engine life, and more power in heavy seas. In marine application, this engine will weigh approximately 1100 lbs. Need something different than our standard kit? Our conversion kits can be used in keel cooled, dry exhaust, and other applications. We can supply necessary parts for many different applications. Could you use a raw water pump along with the one for the engine, for bait well etc? Our raw water pump is mounted where the power steering pump mounts on side of engine, and is gear driven. If you need a second pump it can be mounted on front of engine. Tell us what you need, and we will price our kit to your specs. Are you tired of paying high prices for marine parts? If any parts were ever needed, belts, hoses and engine parts can be found at your local discount part stores.

Here are some other benefits of converting to our kits:

• Fuel less flammable
• Better fuel economy
• More reliable
• Less maintenance
• Value of boat increases with diesel power
• Possible insurance rate reduction.

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WOULD YOU BE INTERESTED IN A COST-EFFICIENT, LIGHT- WEIGHT MARINE DIESEL?
The Dodge Cummins engines 1989-1997 will range from 160 HP to 215 HP in stock application. The 1989-1993 engines can be brought up to about 200 to 215 HP with adjustments to injector pump and after-cooler installed. If you need more than 215 HP, this can be achieved by reworking the injector pump and replacing injectors. You can also use the 1994-1997 engines with the Big Bosch injector pump, with 160 to 215 HP available from truck depending on year model, HP can be increased. The 1998-2002 24 valve with 235HP out of truck, with more available. The new 2003 dodge truck engine comes stock with 305hp and we plan to have a kit for this engine in 2006. When deciding what HP you would like to have, remember the more stock you leave the engine, the better economy, performance, and reliability you will receive. This relates to any engine, gas or diesel. We have kits that will increase the HP on the 1994-1997 engines to 180, 210, 230, 250 +. The 24 Valve engine can also be increased to over 250 HP. At 250 HP and higher, we recommend an exhaust temperature pyrometer gauge kit. Under certain conditions such as, exhaust restriction or too much prop, it is possible the exhaust temperature would rise too high. If this situation should happen, this kit would let you know so the throttle could be changed to drop temperature until problem was corrected (this potential problem relates to any diesel repower application, not just our application). For customers wanting to use rubber isolator mounts instead of bolting the engine solid, don’t use just any rubber mounts, use mounts designed to carry the weight, engine torque, and prop thrust of these engines. There is not any mechanical reason the Dodge 6BT Cummins will not give good results in a marine application. We have some engines that are going on their fourth year in charter service with no mechanical problems. Our kits are in boats from 25’ to 35’ a 55’ sailboat in Hawaii and recently a 105' sternwheeler.

KIT CONTENTS

• Aftercooler
• Bell Housing Adapter for SAE#3 Transmission Plate
• Engine Mounts
• Exhaust Elbow Assembly 4"
• Exhaust Manifold
• Heat Exchanger
• Oil Pan Drain
• Raw Water Pump
• Thermostat Housing
• Turbo Air Out Piping
• Turbo Oil Return
• Turbo Oil Supply
• Water Cooled Turbo Housing
• Kit is supplied with all necessary hardware, gaskets and piping necessary for installation of above items, We have tried to furnish everything needed to complete the conversion of the truck to marine use.

ITEMS NEEDED ON ENGINE

When locating an engine from 1989 to 2002 these items listed below need to be on the engine, as they do not come in the kit:
Run solenoid on injector pump 1989-1997
Turbo (see note A in the notes section)
Alternator
Alternator bracket
Alternator belt tensioner (spring loaded tensioner)
Starter (see #B in note section)
Flywheel
Flywheel bell housing (see #B in note section)
Water inlet housing
Engine wiring harness and engine computer on 1998 to 2002 engines
Engine Fan Assembly (It is better to use the front pulley assembly on truck engine. Just remove fan from assembly. Engines can come with different diameter crankshaft pulleys, This is why we do not furnish belt in kit, Correct belt length can be purchased at local part store.

ITEMS NOT NEEDED

Truck Exhaust manifold
Truck Transmission cooler
Alternator belt
Vacuum, Steering pump assembly
Air intake connection

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NOTE SECTION

A A water-cooled exhaust turbo housing comes in kit. The truck turbo is removed from the truck exhaust housing side and installed into water-cooled exhaust housing provided in kit. With this set up you will have the boost to increase the HP to the 250-260 HP Range. If you have to have more HP than this we can give you credit for water-cooled turbo Housing in kit and you can purchase a complete water cooled turbo assembly for 300HP or higher to have needed boost pressure for more HP.
In trucks through 1999 the turbo installed on the truck was the model HX35 which will fit the water cooled housing. In 2000-2001 trucks with the automatic transmission came with a model HY35 turbo and the water cooled turbo housing does not fit these turbo's. In 2002, trucks with the automatic transmission went back to the HX35 turbo assembly. A turbo from an engine 1999 and prior will need to be found if you are planning to use engines with the HY35 turbo.
B Our kit fits the 1994 - 2001 flywheel housing and starter. If customer wants to use the 1989 - 1993 engine, he will need to locate a starter and flywheel housing for the 1994 - 2001 engine to put on the earlier engine. Some of the 2002 standard transmission Flywheel's have a larger clutch surface than the ring gear, this is easily remedied by taking the flywheel to a machine shop and having it turned to the same diameter as the ring gear or locating a flywheel for the 98-2001 engine.
C On V-Drive Transmissions the oil drain may need to be relocated. Some customers have either: gone to a shallow sump oil pan, had the sump modified, or turned the oil pan with the sump toward the front of the engine (the oil pan will bolt on either way) when this is done the pick up tube from the screen will need to be shortened.

REPOWERING TIPS

Below are a few steps that will help you achieve the best performance, reliability, and satisfaction with a repower application. This relates to any repower application not just this application.
Use transmission rated for your application.
Try to keep engine room temperature within about 30 degrees of outside temp. The cooler the air going into engine, the better the performance.
Prop boat for max RPM with full load.
Check exhaust temperature at rated speed and load. This will let you know if you are propped right and exhaust size is correct.

Engine Dimensions with Conversion Kit

Length----39" from front pulley to face of bell housing
Length----50" from front crankshaft pulley to turbo piping (over all length)
Width-----with turbo after-cooler-----31 ½"
Front engine mounts ¾" slot width-----17" min. to 28" max.
Rear engine mounts ¾" slot width------23" min. to 27" max.
Center of front mount to center of rear mount----32"
Center of front crankshaft to top of highest point of engine---21 ½"
Highest point of engine to bottom of front engine mounts----25"

WARRANTY

The exhaust manifolds have a one-year warranty. The water-cooled turbo housing has a six- month warranty. The Sherwood raw water pump has a six-month warranty (excluding a worn impeller). The heat exchanger, after-cooler, water-cooled SS exhaust elbow, and all brackets carry a one-year warranty.

TERMS:

Kit price for 1989-2002 Dodge/Cummins engine at stock Hp is currently $5700.00
A 50% deposit is required. Upon receipt of deposit, we will inform you of the anticipated delivery based on parts availability. If the delivery schedule does not meet your time requirements, your deposit will be refunded. Balance is due before shipment.
We would be happy to quote on complete marinized engine with or without gear just let us know what we can do to help.

Yes, we do supply H&S with the water cooled manifolds and etc for this conversion, that being said we do indeed recommend the kit.
A little self serving, we know, but it is a good, relatively inexpensive kit.

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