Volvo Penta D2-55F 55HP Marine Diesel Engine

Technical description:

Engine block and head
- Cylinder block and cylinder head manufactured from high grade cast iron. Crankcase features a rigid tunnel block design.
- Chrome molybdenum forged crankshaft, statically and dynamically balanced with integral counterweights. Pistons are cast from high silicon aluminum, are heat treated and fitted with two cast iron, chromium faced compression rings and a single oil ring.
- Replaceable, hardened valve seats
- Elastic coupling on flywheel

Engine mounting
- Tuned front and rear cushion-type rubber mounts. Adjustable.

Lubrication system
- Spin-on full flow oil filter
- Separate oil scavenger pipe
- Closed circuit crankcase ventilation
- One top and one side oil filling position

Fuel system

- Flange mounted, cam driven in-line injection pump
- Feed pump with hand primer
- Spin-on type fine fuel filter
- Auxiliary stop button on engine

Exhaust system
- Freshwater cooled exhaust manifold and seawater cooled exhaust elbow

Cooling system
- Freshwater cooling system governed by  thermostat
- Tubular heat exchanger with integral expansion tank
- Easily accessible sea water pump and impeller

Electrical system
- 12V corrosion-protected electrical system
- 115A marine alternator
- 24V alternator as option
- Charging regulator with electronic sensor for voltage drop compensation
- Glow plugs for excellent cold starting
- Electric starter motor (2.0 kW output)
- Electrical stop
- Extension cable harness with plug-in connection available in various lengths

EVC instruments
- Start/stop panel
- Tachometer with alarms and engine hour counter Options:
- Separate instruments for: – Fuel level – Temperature – Voltage
- LCD display with multi sensor
- NMEA interface presenting engine data on chart plotters

Choice of transmissions:

HS25A Hydraulic – drop center with 8° down angled output shaft. Trolling valve kit available.
Ratio 2,3:1/2,3:1 (RH/LH) and  2,71:1/2,71:1 (RH/LH).

MS25A Mechanical – drop center with 8° down angled output shaft.
Ratio 2.23:1/2.74:1 (RH/LH) and  2.74:1/2.74:1 (RH/LH).

MS25L Mechanical – drop center with straight output shaft.
Ratio 2.27:1/2.10:1 (RH/LH) and   2.74:1/2.72:1 (RH/LH).

S-drive 130S and 130SR for reverse installation of engine. Ratio 2.19:1.


Specifications:

Engine designation : D2-55
Crankshaft power, kW (hp) : 41 (55)
Propeller shaft power, kW (hp) : 39 (53)
Engine speed, rpm : 2700–3000
Displacement, l (in3) : 2.2 (134.2)
Number of cylinders : 4
Bore/stroke, mm (in.) : 84/100 (3.31/3.94)
Compression ratio : 23.3:1
Dry weight with reverse gear HS25A/MS25, kg (lb) : 249/243 (549/536)
Dry weight with saildrive 130S/SR, kg (lb) : 253 (558)
Emission compliance : BSO, EU RCD Stage II, US EPA Tier 3
Rating : R5


Package includes:

- Volvo Penta D2-55 engine 55 HP
- Gearbox: MS25A / MS25L / HS25A
- Exhaust System
- Instrument panel: including start stop button panel and rpm gauge with internal LCD display.
- Engine control
- 7mtr wiring harnesses
- Engine oil and coolant
- Mounts
- Cable ends and connection brackets
- Service Kit