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The New
Cummins 4B 3.3-M
65 HP @ 2600 RPM |
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CUMMINS MARINE POWER
- 4B 3.3M
65 HP @ 2600 RPM |
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Atlantic Diesels is proud to offer the "Newly
Marinized Cummins 4B 3.3-M" Diesel Engine.
This rugged engine
package is designed with the serious boater in mind.
The max 65 hp is achieved at just 2600 RPM. At an
amazingly low 1800 RPM this engine delivers almost
55 HP. Ideal for those long cruises.
The low engine speed
contributes to the high torque and durability of the
engine. Lower engine speed
also equals lower fuel consumption, lower noise
level, lower operating cost and longer life! |
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In keeping this unit easy to
maintain and operate some key features are:
1. Mani-Cooler: The engine utilizes the
highly proven and efficient one-piece combination
heat exchanger, water-cooled exhaust manifold and
header tank assembly. This greatly reduces the
amount of plumbing on the engine as well as reducing
the potential for coolant leaks. Cleaning and
disassembly of this unit requires no more than a
screwdriver. Remove the non-corrosive neoprene end
caps and simply pull out the tube bundle.
2. Jabsco raw water pump: Gear driven and
flanged-mounted off the front timing cover, creating
reliability and ease of accessibility for servicing.
With durability in mind this pump utilizes not one
but 2 sealed bearings. |
3.
High Output Balmar with HD 11/16th inch Drive Belt:
The fresh water circulating pump and standard 60 amp
alternator are driven by a heavy-duty 11/16th inch belt. (Typically an engine of this size uses
a smaller 3/8" - 1/2" belt.) The single HD 11/16th
inch belt enables the use of a high-output
alternator, without the headache and expense of
converting to double pulleys and double belts. When
ordering the engine a Balmar high output alternator
can be specified and delivered with it already
installed and connected. Standard options include
the latest Balmar model 6-Series 70 amp and 100 amp. Connected to the state of the
art fully programmable multistage regulator type
614. Alarms sensors can be supplied for high
battery and alternator temp. These automatically
reduce the output of the alternator to allow
cooling.
4. Double Crankshaft
Pulley: For driving other accessories such as a
refrigeration compressor, a double groove crankshaft
pulley is an available option.
5. Electric Fuel Pump: The injector pump has
a built-in transfer pump. For added reliability a
back-up electric fuel transfer pump is fitted.
6. Deluxe instrument panel: Oil pressure
Gauge, Water Temp Gauge, Voltmeter, Tachometer
incorporating LED Hour meter, Key Switch and spare
momentary switch for accessory use. Alarm
System Indicating High Water Temperature and Low Oil
Pressure warning. Engine Shut Down via key switch to
avoid the installation of manual pull cable. 10 , 15
and 20 foot extension harnesses available.
7. Transmission Selection:
A rugged engine deserves a rugged transmission! For
this we strongly recommend the PRM 260. This top of
the line, hydraulically operated gear, will run
continuously in either direction (your propeller
rotation preference). A lock-up "get you home"
feature is standard. Other features include external
oil pump and control valve, and a split casing with
cast iron construction. It is available with a 3.50
inch Offset drop or parallel output. Other popular
transmission options include the Hurth HBW 250 and
the Borg Warner Velvet Drive 71 or 72 series. A
standard SAE #4 bell housing is used for simplifying
the attachment of any commonly used marine gear. We
would be happy to discuss fitting your existing
transmission if desired.
8. Oil and filter changes:
Easy, a hand oil change pump is fitted as standard.
Fuel and oil filters are both spin-on type. Change
intervals are recommended at 500 hrs. fuel and 250
hrs. oil. |
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Installation Dimensions -
Cummins 4B 3.3-M |
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CUMMINS 4B 3.3-M ~ SPECIFICATIONS |
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GENERAL ENGINE
DATA |
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Engine Model:
4B3.3-M |
Rating
Type: Intermittent |
| Rated Engine Power: 65 bhp
(48.5kw) |
Rated
Engine Speed:
2600 RPM |
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High Idle Speed Range (No Load):
2850 RPM |
Idle
Speed: 800
RPM |
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Engine Torque:
131.3 ft.lb (179 Nm) |
Brake
Mean Effective Pressure: 99.5
psi (687 kPa) |
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Piston Speed:
1963 ft/min (9.9 m/sec) |
Average
Noise Level: 94
dBA @ 1M |
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Firing Order:
1 - 3 - 4 - 2 |
Number
of Cylinders: Four |
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Configuration:
In-Line |
Aspiration:
Natural |
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Bore:
3.74
in. (95 mm) |
Stroke:
4.53
in. (115 mm) |
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Displacement:
3.3 L
(199 in.³
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Cycle:
4
Stroke |
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Compression Ratio:
18.8:1 |
Direction
of Rotation Viewed at Flywheel End: CCW |
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Total Weight - Dry - Less Gear:
554 lbs. |
Total
Weight - Dry - Including PRM Gear: 660
lbs. |
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Total Weight Dry Including Hurth HBW 250 Gear:
594 lbs. |
Total
Weight - Wet - Including PRM Gear: 700
lbs. |
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4B
3.3-M ~ FUEL SYSTEM |
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Pump Type: Zexel
VE |
Injectors:
Zexel |
| Max Fuel
Consumption @ Rated RPM: 3.43 GPH (12.99 L/hr) |
Approx. Fuel
Flow to Pump @ Max RPM:
6.7 GPH (25.4 L/hr) |
| Lift
Pump Type (USCG Approved): Electric |
Lift
Pump - Lift Capacity: 6
Ft. (2.1 M) |
| Lift Pump
Flow Rate:26
GPH (98.4 LPH) @ 3.5 psi* (24.1 kPa) |
Fuel Supply
Line Restriction (Max): 3.0
in Hg. (76.2 mm Hg.) |
| Fuel
Return Line Restriction (Max): 15
in. Hg. (381 mm Hg.) |
Fuel
Supply Line Size (Min): 1/4
in. (6.4 mm) ID |
| Fuel Rerurn
Line Size (Min): 1/4
in. (6.4 mm) ID |
Fuel Filter
Change Interval: 500
Hours |
| Heat
Rejection to Fuel: 28
BTU/Min. (0.5 kW) |
Governor
Droop: 9% |
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Normal operating pressure 3.5 psi, minimum 2.5, maximum
shutoff 4 psi |
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4B
3.3-M ~ EXHAUST SYSTEM |
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| Maximum
Exhaust Back Pressure: 3.0
in. Hg. (75 mm Hg.) |
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Exhaust
Gas Flow: 324
CFM (153 L/sec) |
| Maximum
Allowable Static Bending Moment @ Exhaust MFD Flange : 14.8
lb.ft. (20 N-m) |
| Exhaust
Gas Temperature: 1117° F (603°
C) |
| Minimum
Rise Sea Water Line to Exhaust Outlet:
12 in. (304.8 mm) |
| Recommended
Minimum Exhaust Pipe Size: Outlet
2.5 in. (63.5 mm) OD |
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4B
3.3-M ~ INTAKE AIR SYSTEM |
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| Intake
Air Flow: 119
CFM (56 L/sec) |
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Intake
Manifold Pressure: -0.3
in. Hg. (-8 mm Hg) |
| Maximum
Engine Compartment Air Temperature: 140°
F (60° C) |
| Maximum
Air Temperature at Engine Inlet: 122° F (52°
C) |
| Minimum
Cross Section of Air Duct / Engine:
37 sq. in. (233 sq. mm) |
| Heat
Rejection to Ambient: 950
BTU / min (16.7 kW) |
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4B
3.3-M ~ LUBRICATION SYSTEM |
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| Recommended
Lube Oil: SAE
15W40, API CH4 |
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Oil
Pressure at Idle Speed - Minimum: 31.2
psi (215 kPa) |
| Oil
Pressure at Normal Operating Range: 68
psi (469 kPa) |
| Maximum
Allowable Oil Temperature: 248° F (120°
C) |
| Oil
Pan Capacity:
1.9 Gal US (7.0 L) |
| Total
System Capacity:
1.914 Gal US (7.5 L) |
| Maximum
Operation Angularity of Oil Pan:
Front Up- 35° Front Down-
35° Side to Side- 35° |
| Low
Oil Pressure Switch Setting:
15 psi (103 kPa) |
| Lube
Oil Filter Change Interval: 250
Hours |
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4B
3.3-M ~ COOLING SYSTEM |
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| Coolant
Capacity - Engine Only: 1.2
Gal US (4.5L) |
| Coolant
Capacity - Engine & Heat Exchanger:
2.9 Gal US (11L) |
| Maximum
External Pressure Loss in Cooling System:
5.0 psi (35 kPa) |
| Standard
Thermostat (modulating) Range:
180 - 203° F (82 - 95° C) |
| Maximum
Coolant Temperature:
212° F (100° C) |
| Pressure Cap
Setting at Sea Level:
7 psi (48 kPa) |
| Fresh
Water Flow:
34.9 GPH (132.3 LPH) |
| Minimum
Coolant Makeup Capacity:
2.4 Qts. US (2.2 Litre) |
| Minimum
Raw Water Pump Inlet Plumbing Diameter:
1.25" (32 mm) |
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Minimum
Raw Water Pump Inlet Restriction: 5
in. Hg. (127 mm Hg.) |
| Maximum
Raw Water Pump Initial Suction Lift: 6
ft. (2.1 M) |
| Maximum
Raw Water Pump Flow:
36.2 GPM (137
LPM)* * With 1.25" Inlet on
Pump |
| Heat
Rejection to Coolant:
1610 BTU / min. (28.3 kW) |
| High
Water Temperature Switch Setting (VDO):
205° F (96° C) |
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4B
3.3-M ~ ELECTRICAL SYSTEM |
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Minimum
Recommended Battery Capacity - Cold Soak @ 0° F (-18°
C):
550 CCA |
| Reserve
Capacity Minutes:
135 |
| Maximum
Allowable Resistance of Starting Circuit:
0012 Ohms |
| Starter
Motor:
Nippondenso 12V |
| Alternator:
Nippondenso 12V, 60 Amp |
| Fuel
Solenoid Type:
Energize to Run |
| Fuel
Solenoid Current:
1.7 Amps |
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