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Volvo Penta D8-450 Engine

General Technical Data

Engine Specifications

Engine Model ............... Volvo Penta D8-450
Engine Type ............... 4-stroke inline 6-cylinder direct injection liquid-cooled diesel
Number of Cylinders ............... 6
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 4.33 (110.0)
Engine Stroke, in (mm) ............... 5.31 (135.0)
Displacement, cu.in (L) ............... 469.7 (7.7)
Rated Engine Power, hp (kW) ............... 450 (331)
Rated Engine Speed, rpm ............... 2700
Peak Torque ............... 1464 Nm (1080 lb-ft) at 1510 rpm
Idle Speed ............... 600-700 rpm
Aspiration Type ............... Twin-entry turbo with charge air cooler and supercharger
Compression Ratio ............... 16.5:1
Firing Order ............... 1-5-3-6-2-4
Cylinder Block Type ............... Cast iron ladder frame
Cylinder Head Type ............... Cast iron single piece
Camshaft Configuration ............... Double overhead camshafts
Valves Per Cylinder ............... 4
Lubrication System ............... Full-pressure with piston cooling
Oil Pump Type ............... Gear-driven
Oil Filter Type ............... Full-flow spin-on and bypass combination
Cooling System ............... Liquid-cooled heat exchanger or keel cooling
Water Pump Type ............... Gear-driven centrifugal seawater and coolant pumps
Air Cleaner Type ............... Washable dry element with silencer
Emission Compliance ............... US EPA Tier 3, IMO NOx Tier II
Starting System ............... Electric starter motor
Electrical System ............... 24V with 12V conversion option
Alternator Capacity ............... 24V at 80A or 12V at 115A

Fuel System

Fuel Injection Type ............... High-pressure common-rail
Injection System Control ............... Electronic Vessel Control
Maximum Injection Pressure ............... 2000 bar (29007 psi)
Injection Strategy ............... Multi-injection pre main and post
Fuel Feed Pump Type ............... Gear-driven mechanical lift pump
Fuel Filter Type ............... Primary water separator and secondary fine filter
Fuel Grade Requirements ............... ASTM D975 1-D or 2-D, EN 590, JIS KK 2204
Specific Fuel Consumption at Rated Power ............... 219 g/kWh (0.355 lb/hph)
Fuel Supply Pipe Connection ............... High-pressure steel lines
Fuel Return Pipe Connection ............... Low-pressure overflow circuit
Governor Type ............... Electronic engine management system
Maximum Fuel Inlet Restriction ............... 10 kPa (1.45 psi)
Maximum Fuel Return Restriction ............... 20 kPa (2.90 psi)
Fuel Density Standard Calibration ............... 840 g/L at 15 deg C (60 deg F)
Low Heating Value Standard Calibration ............... 42700 kJ/kg
Alternative Fuel Support ............... Hydrotreated Vegetable Oil
Leak Detection System ............... Electronic double-wall sensor ready

Dimensions and Weight

Engine Length, in (mm) ............... 59.1 (1500)
Engine Width, in (mm) ............... 35.8 (910)
Engine Height, in (mm) ............... 39.4 (1000)
Dry Weight (Bobtail), lbs (kg) ............... 1852 (840)
Wet Weight (Bobtail), lbs (kg) ............... 1984 (900)

Maintenance Data

Service Information

Minimum Compression Pressure, psi (kPa) ............... 348 (2400)
Oil Pressure at Idle Speed, psi (kPa) ............... 23.2 (160)
Oil Pressure at Operating Speed, psi (kPa) ............... 39.2-87.0 (270-600)
Maximum Oil Temperature, F (C) ............... 257 (125)
Thermostat Opening Temperature, F (C) ............... 185 (85)
Thermostat Fully Open Temperature, F (C) ............... 203 (95)
Inlet Valve Clearance, Cold, in (mm) ............... 0.0157 (0.400)
Exhaust Valve Clearance, Cold, in (mm) ............... 0.0197 (0.500)

Engine Oil and Coolant

Engine Oil Type .................. SAE 10W-30, SAE 15W-40, VDS-4.5
API Service Classifications ......................... CK-4, CJ-4, CI-4
Engine Oil Capacity with Filters, qt (L) ............... 30.6 (29.0)
Engine Oil Capacity, Minimum, qt (L) ............... 23.2 (22.0)
Cooling System Capacity, gal (L) ............... 9.2 (35.0)

Service Intervals

Change engine oil ............... Every 250 hours
Replace oil filter ............... Every 250 hours
Replace fuel filter ............... Every 250 hours
Service air filter ............... Every 200 hours
Replace air filter ............... Every 500 hours
Change coolant ............... Every 4000 hours
Valve-lash adjustment ............... Every 1000 hours
Replace pump impeller ............... Every 500 hours
Check fuel system ............... Every 1500 hours
Compression test ............... Every 1500 hours
Belt inspection ............... Every 250 hours

Service Specifications

Cylinder Bore Inside Diameter, in (mm) ............... 4.3307-4.3315 (110.000-110.020)
Cylinder Bore Out of Round Limit, in (mm) ............... 0.0004 (0.010)
Cylinder Bore Taper Limit, in (mm) ............... 0.0004 (0.010)
Cylinder Height Above Block Face, in (mm) ............... 0.0012-0.0028 (0.030-0.070)
Main Bearing Bore Inside Diameter, in (mm) ............... 3.5433-3.5441 (90.000-90.022)
Connecting Rod Small End Bushing I.D, in (mm) ............... 1.5756-1.5764 (40.020-40.040)
Main Bearing Journal Diameter, in (mm) ............... 3.3461-3.3469 (84.992-85.013)
Main Bearing Shell Clearance, in (mm) ............... 0.0015-0.0035 (0.040-0.090)
Crankshaft Axial End Play, in (mm) ............... 0.0039-0.0118 (0.100-0.300)
Connecting Rod Journal Diameter, in (mm) ............... 2.7556-2.7563 (69.992-70.011)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0015-0.0031 (0.040-0.080)
Connecting Rod Axial Side Clearance, in (mm) ............... 0.0059-0.0118 (0.150-0.300)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0027-0.0039 (0.070-0.100)
Piston Pin Outer Diameter, in (mm) ............... 1.5744-1.5748 (39.990-40.000)
Piston Pin to Small End Bushing Clearance, in (mm) ............... 0.0008-0.0020 (0.020-0.050)
Top Piston Ring End Gap, in (mm) ............... 0.0118-0.0177 (0.300-0.450)
Second Ring End Gap, in (mm) ............... 0.0197-0.0276 (0.500-0.700)
Oil Ring End Gap, in (mm) ............... 0.0098-0.0197 (0.250-0.500)
Top Ring Side Clearance, in (mm) ............... 0.0020-0.0035 (0.050-0.090)
Second Ring Side Clearance, in (mm) ............... 0.0016-0.0031 (0.040-0.080)
Oil Ring Side Clearance, in (mm) ............... 0.0012-0.0028 (0.030-0.070)
Cylinder Head Surface Flatness, in (mm) ............... 0.0020 (0.050)
Inlet Valve Head Diameter, in (mm) ............... 1.496 (38.0)
Exhaust Valve Head Diameter, in (mm) ............... 1.378 (35.0)
Inlet Valve Stem to Guide Clearance, in (mm) ............... 0.0012-0.0024 (0.030-0.060)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0020-0.0031 (0.050-0.080)
Inlet Valve Margin, Minimum, in (mm) ............... 0.039 (1.0)
Exhaust Valve Margin, Minimum, in (mm) ............... 0.039 (1.0)
Inlet Valve Seat Angle, deg ............... 30
Exhaust Valve Seat Angle, deg ............... 45
Inlet Valve Depth Below Head Face, in (mm) ............... 0.0275-0.0394 (0.700-1.000)
Exhaust Valve Depth Below Head Face, in (mm) ............... 0.0354-0.0472 (0.900-1.200)
Valve Spring Free Length, in (mm) ............... 2.165 (55.0)
Camshaft Journal Diameter, in (mm) ............... 1.9681-1.9689 (49.991-50.012)
Camshaft Bearing Clearance, in (mm) ............... 0.0019-0.0035 (0.050-0.090)
Camshaft Axial End Play, in (mm) ............... 0.0039-0.0098 (0.100-0.250)
Camshaft Bushing Inner Diameter, in (mm) ............... 1.9705-1.9724 (50.050-50.100)

Tightening Torques

Cylinder Head Fasteners ............... 73.8 lb-ft (100 Nm) + 180 deg turn
Main Bearing Capscrews ............... 221.3 lb-ft (300 Nm) + 120 deg turn
Connecting Rod Cap Fasteners (Step 1) ............... 14.8 lb-ft (20 Nm)
Connecting Rod Cap Fasteners (Step 2) ............... 44.3 lb-ft (60 Nm) + 90 deg turn
Flywheel Fasteners ............... 59.0 lb-ft (80 Nm) + 60 deg turn
Flywheel Housing Fasteners (M12) ............... 59.0 lb-ft (80 Nm)
Flywheel Housing Fasteners (M10) ............... 36.9 lb-ft (50 Nm)
Vibration Damper Hub Fasteners ............... 191.8 lb-ft (260 Nm)
Camshaft Gear Fastener ............... 44.3 lb-ft (60 Nm) + 90 deg turn
Camshaft Cap Fasteners ............... 18.4 lb-ft (25 Nm)
Rocker Arm Shaft Fasteners ............... 36.9 lb-ft (50 Nm)
Valve Adjusting Screw Locknut ............... 24.3 lb-ft (33 Nm)
Valve Cover Fasteners ............... 17.7 lb-ft (24 Nm)
Oil Pan Drain Plug ............... 59.0 lb-ft (80 Nm)
Oil Pan Securing Fasteners ............... 14.8 lb-ft (20 Nm)
Piston Cooling Nozzle Fasteners ............... 18.4 lb-ft (25 Nm)
High Pressure Fuel Injector Hold Down Clamp ............... 47.2 lb-ft (64 Nm)
High Pressure Fuel Rail Fasteners ............... 18.4 lb-ft (25 Nm)
High Pressure Fuel Pipes Unions ............... 22.1 lb-ft (30 Nm)
Fuel Injection Pump Mounting Fasteners ............... 22.1 lb-ft (30 Nm)
Exhaust Manifold Fasteners (Step 1) ............... 14.8 lb-ft (20 Nm)
Exhaust Manifold Fasteners (Step 2) ............... 38.4 lb-ft (52 Nm)
Turbocharger Mounting Nuts ............... 36.9 lb-ft (50 Nm)
Alternator Pivot Bolt ............... 36.9 lb-ft (50 Nm)
Starter Motor Mounting Bolts M12 ............... 59.0 lb-ft (80 Nm)
Coolant Pump Mounting Fasteners M8 ............... 17.7 lb-ft (24 Nm)
Thermostat Housing Fasteners M8 ............... 17.7 lb-ft (24 Nm)
Sea Water Pump Mounting Fasteners ............... 17.7 lb-ft (24 Nm)
Oil Cooler Mounting Fasteners ............... 17.7 lb-ft (24 Nm)
Oil Filter Housing Fasteners ............... 17.7 lb-ft (24 Nm)
Engine Mount Bracket To Block Fasteners ............... 162.3 lb-ft (220 Nm)
Flexible Engine Mount Nut ............... 51.6 lb-ft (70 Nm)
Crankcase Ventilation Cover Screws ............... 8.8 lb-ft (12 Nm)
Air Intake Manifold Fasteners ............... 17.7 lb-ft (24 Nm)
Charge Air Cooler Fasteners ............... 17.7 lb-ft (24 Nm)
Oil Pressure Sensor ............... 18.4 lb-ft (25 Nm)
Coolant Temperature Sensor ............... 16.2 lb-ft (22 Nm)
Crankshaft Position Sensor ............... 7.4 lb-ft (10 Nm)
Camshaft Position Sensor ............... 7.4 lb-ft (10 Nm)
Common Rail Pressure Sensor ............... 51.6 lb-ft (70 Nm)

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• Volvo Penta Engines Specs
  
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