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Engine Comparison
Courtesy of: Ford Motor Company Publication 2124-002 REF


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7.3 DI TURBO7.3L IDI TURBO7.3L NA

ENGINE SPECIFICATIONS
TYPE
Diesel, 4-Cycle Type,
Direct Injection
Diesel, 4-Cycle Type,
Indirect Injection
Diesel, 4-Cycle Type,
Indirect Injection
CONFIGURATION
OHV V-8OHV V-8OHV V-8
DISPLACEMENT
444 cu. in.
(7.3 litres)
444 cu. in.
(7.3 litres)
444 cu. in.
(7.3 litres)
BORE & STROKE
4.11 x 4.18 in.
(10.44 x 10.62 cm)
4.11 x 4.18 in.
(10.44 x 10.62 cm)
4.11 x 4.18 in.
(10.44 x 10.62 cm)
COMPRESSION RATIO
17.5:121.5:121.5:1
ASPIRATION
Turbocharged with Back Pressure Device for warm-upTurbocharged with Wastegate ControlNaturally Aspirated
RATED POWER
210 hp @ 3000 rpm190 hp @ 3000 rpm185 hp @ 3000 rpm
RATED TORQUE
425 lb.-ft. @ 2000 rpm395 lb.-ft. @ 1400 rpm360 lb.-ft. @ 1600 rpm
TOTAL WEIGHT - DRY
920 lbs (417 kg)900 lbs (408 kg)860 lbs (390 kg)
7.3 DI TURBO 7.3L IDI TURBO 7.3L NA

COOLING SYSTEM
WATER FLOW
80 gpm @ 3300 rpm 79 gpm @ 3000 rpm 80 gpm @ 3300 rpm
THERMOSTAT LOCATION
In Water Pump Housing Water Outlet Water Outlet
WATER PUMP
Centrifugal Type Centrifugal Type Centrifugal Type
WATER PUMP ROATIONS
Clockwise Counterclockwise Counterclockwise
FAN HUB
Right-Hand Thread Left-Hand Thread Left-Hand Thread
7.3 DI TURBO 7.3L IDI TURBO 7.3L NA

LUBRICATION SYSTEM
TYPE
Full Flow Full Flow Full Flow
CAPACITY (INCLUDING FILTER)
12 U.S. Qts. (11 liters) 10 U.S. Qts. (9.5 liters) 10 U.S. Qts. (9.5 liters)
OIL PUMP
Gearotor Pump Gear Pump Gear Pump
OIL COOLER
30 Fins per inch 30 Fins per inch 24 Fins per inch
LUBE OIL SYSTEM
Enhanced for New Injection System Not Applicable Not Applicable
LUBE OIL FILTER
Microglass - Extender Cellulose Cellulose
OIL FILTER MOTORCRAFT/PART NUMBER
FL-1995/F4TZ-6731-A FL-784 FL-784
OIL DRAIN INTERVAL
3000 - 5000 miles with microglass filter 2500 - 5000 miles 2500 - 5000 miles
7.3 DI TURBO 7.3L IDI TURBO 7.3L NA

HIGH PRESSURE LUBRICATION SYSTEM
HIGH PRESSURE PUMP
Gear Driven Swash Plate Not Applicable Not Applicable
PRESSURE CONTROL
Pulse-Width Modulated Pressure Regulated Spill Valve (EEC-V) Not Applicable Not Applicable
OIL RAILS
High Pressure Rails in Cylinder Heads Not Applicable Not Applicable
OIL LINES
High Pressure from Pump to Rails Not Applicable Not Applicable
LUBRICATION OIL TEMPERATURE
Used for Injection Control Strategy Not Applicable Not Applicable
7.3 DI TURBO 7.3L IDI TURBO 7.3L NA

FUEL SYSTEM
TYPE
Electronically-controlled Direct Injection Mechanical Indirect Injection Mechanical Indirect Injection
SUPPLY SYSTEM
Pump
Mechanical Tandem: Diaphragm/Piston Mechanical Single Diaphragm Mechanical Single Diaphragm
Filter
Replaceable Element (FD-4595A/F4TZ-9N184-B) Conventional Spin-On Conventional Spin-On
Return
Flow Regulated Pump and Injector Leak-Off Pump and Injector Leak-Off
FUEL DELIVERY AND CONTROL
System
Unitized Injectors Mechanical Pump, Lines and Injection Nozzles Mechanical Pump, Lines and Injection Nozzles
Injector Actuation
Hydraulic/Electrical Mechanical Hydraulic Mechanical Hydraulic
Injector Timing
Electronic Controlled by EEC-V (not adjustable) Mechanical Mechanical
Fuel Control
Electronic Mechanical Mechanical
Diagnosis
EEC Quick Test, Diagnosis with Super Star Tester II, Pressure Gauges Pressure Gauges, Timing Meter Pressure Gauges, Timing Meter
7.3 DI TURBO 7.3L IDI TURBO 7.3L NA

ELECTRONIC ENGINE CONTROLS
SYSTEM
EEC-V None None
INJECTION CONTROL
Injector Driver Module Not Applicable Not Applicable
7.3 DI TURBO 7.3L IDI TURBO 7.3L NA

CYLINDER HEAD
COMBUSTION CHAMBER DESIGN
Re-entrant Chamber in Piston Pre-Combustion Chamber in Head Pre-Combustion Chamber in Head
ROCKER ARM ASSEMBLY
Plate-Type Valve Lever Stamped Steel Stamped Steel
EXHAUST VALVE MATERIAL
Made of Hot Forged 21-2n Material Made of Iconel for Temperature Resistance Made of Chrome-Plate Steel
OIL RAILS
High Pressure Rails in Cylinder Heads Not Applicable Not Applicable
FUEL PASSAGES
In Cylinder HeadsNot ApplicableNot Applicable
7.3 DI TURBO7.3L IDI TURBO7.3L NA

CYLINDER BLOCK
CYLINDER BLOCK MATERIAL
Cast IronCast IronCast Iron
PISTON MATERIAL
Aluminum-Alloy, Cast in Ni-Resist InsertAnodized, Aluminum-Alloy, Cast in Ni-Resist InsertAluminum-Alloy, Cast in Ni-Resist Insert
Integral CombustionNot ApplicableNot Applicable
PISTON RINGS
#1 Full Keystone,
#2 Taper Faced,
#3 Two Piece Oil
#1 Full Keystone,
#2 Full Keystone,
#3 Two Piece Oil
#1 Rectangular,
#2 Taper Faced,
#3 Two Piece Oil
CONNECTING ROD DESIGN
Forged Steel
Larger Connecting Rod Bore for Wrist Pin
Larger Boring Surface
Forged Steel
Larger Connecting Rod Bore for Wrist Pin
Forged Steel
Smaller Bore for Smaller Wrist Pin
PISTON PIN BORE DIAMETER
1.3086 in. (21.45 cm)1.3086 in. (21.45 cm)1.1104 in. (18.2 cm)