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Ford 2711E Engine

The Ford 2711E is a heavy-duty, naturally aspirated inline 4-cylinder diesel engine belonging to the Ford 2700 Dorset Series. Manufactured between 1969 and late 1981, this engine was engineered primarily for industrial, agricultural, and marine conversions. It is highly regarded by technicians for its robust cast-iron construction, simple mechanical architecture, and reliable performance. Distinctive identification traits of the Dorset series include a front timing cover made of pressed steel and angle-cut timing gears.

The engine utilizes a vertical Overhead Valve (OHV) pushrod configuration. A single camshaft positioned within the cylinder block actuates mechanical lifters, pushrods, and rocker arms to operate two valves per cylinder. Valve clearance adjustments must be performed manually at the rocker shaft adjustment screws according to factory specifications. The cylinders feature a nominal bore of 107.21 mm (4.22 inches) and a piston stroke of 114.96 mm (4.524 inches). This internal geometry yields a total engine displacement of 4.150 liters (254 cubic inches). Pistons travel inside semi-finished replaceable cylinder liners pressed into the block.

The fuel system is an entirely mechanical Direct Injection (DI) setup. Fuel is drawn from the supply tank through primary filtration and delivered to an inline mechanical fuel injection pump. The injection pump relies on internal mechanical lubrication and meters pressurized fuel through rigid high-pressure steel lines. The fuel is delivered directly into the piston crowns via multi-hole spray injectors to ensure optimal combustion efficiency.

Lubrication is managed via a wet-sump system utilizing forced-pressure oil circulation. An internal oil pump driven directly by the timing gears forces oil through a full-flow spin-on filter housing. A defining characteristic of the 2711E block is the absence of an external oil supply pipe running between the fuel injection pump and the oil filter housing. All critical oil channels are integrated internally within the casting.

The engine uses a liquid-cooling architecture managed by a belt-driven centrifugal fresh water pump. A critical diagnostic feature of the 2711E water pump is that it features only one coolant port, which is oriented to point towards either the 2 o'clock or 5 o'clock position. System temperature is regulated by a mechanical thermostat opening into the main radiator or marine heat exchanger loop.

General Technical Data

Engine Specifications

Engine Model ............... Ford 2711E Dorset Series
Engine Type ............... 4-cycle inline 4-cylinder direct injection liquid-cooled diesel
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line vertical
Engine Bore, in (mm) ............... 4.2208 (107.21)
Engine Stroke, in (mm) ............... 4.5259 (114.96)
Total Displacement, cu.in (L) ............... 254.3 (4.150)
Rated Engine Power, hp (kW) ............... 71.0 (53.0)
Rated Engine Speed, rpm ............... 2500
Max Peak Torque, lb-ft (Nm) ............... 178.0 (239.0)
Max Peak Torque Speed, rpm ............... 1500
Max No-Load Speed, rpm ............... 2750-2800
Low Idle Speed, rpm ............... 650-700
Aspiration Type ............... Naturally aspirated
Combustion System ............... Direct injection open chamber design
Compression Ratio ............... 16.0:1
Firing Order ............... 1-3-4-2
Direction of Crankshaft Rotation ............... Clockwise viewed from front of engine
Cylinder Block Construction ............... Monobloc high-grade cast iron
Cylinder Head Construction ............... Single-piece heavy duty cast iron
Valve Mechanism Type ............... Pushrod operated overhead valve system
Number of Valves Per Cylinder ............... 2
Total Number of Valves ............... 8
Cylinder Liner Type ............... Dry type semi-finished slip fit sleeves
Lubrication System ............... Full-pressure
Oil Pump Type ............... Gear-driven
Oil Filter Type ............... Full-flow, spin-on
Cooling System ............... Liquid-cooled
Water Pump Type ............... Belt-driven, centrifugal
Air Cleaner Type ............... Dry or oil bath
Starting System ............... Electric Starter
Electrical System ............... 12V
Alternator Charging, A ............... 35-55

Fuel System

Fuel Injection Pump Type ............... Simms Minimec mechanical inline plunger
Governor Type ............... Mechanical centrifugal flyweight governor
Fuel Lift Pump Type ............... Mechanical diaphragm
Fuel Lift Pump Output Pressure, psi (bar) ............... 5.0-8.0 (0.34-0.55)
Fuel Injection Timing ............... 19.0 degrees before top dead center
Fuel Injector Nozzle Type ............... Multi-hole spray design nozzles
Fuel Injector Opening Pressure, atm (bar) ............... 185.0-190.0 (187.4-192.5)
Fuel Injector Initial Bench Setting, atm (bar) ............... 195.0-200.0 (197.6-202.6)
Fuel Filter Assembly Type ............... Single or dual spin-on element
Fuel Filter Primary Element Rating, micron ............... 5.0
Fuel Filter Secondary Element Rating, micron ............... 2.0
Maximum Fuel Return Line Restriction, inHg (mmHg) ............... 3.0 (76.2)
Fuel Leak-off Rail Arrangement ............... External steel pipe returning surplus to main supply
Injection Pump Lubrication Supply ............... Self-contained oil sump within pump housing
Injection Pump Oil Sump Capacity, pt (L) ............... 0.75 (0.42)

Dimensions and Weight

Overall Length, in (mm) ............... 31.8 (805)
Overall Width, in (mm) ............... 25.4 (645)
Overall Height, in (mm) ............... 34.6 (880)
Dry Weight, lbs (kg) ............... 830 (377)
Wet Weight, lbs (kg) ............... 875 (397)

Maintenance Data

Service Information

Compression Pressure, psi (bar) ............... 350-400 (24.1-27.5)
Minimum Oil Pressure at Low Idle, psi (bar) ............... 15.0 (1.03)
Normal Oil Pressure at Rated Speed, psi (bar) ............... 40.0-60.0 (2.75-4.13)
Oil Pump Relief Valve Opening Pressure, psi (bar) ............... 65.0-75.0 (4.48-5.17)
Thermostat Start-to-Open Temperature, F (C) ............... 170.6-177.8 (77.0-81.0)
Thermostat Fully Open Temperature, F (C) ............... 197.6-204.8 (92.0-96.0)
Minimum Operating Coolant Temperature, F (C) ............... 165.2 (74.0)
Maximum Allowed Coolant Temperature, F (C) ............... 212.0 (100.0)
Intake Valve Clearance, in (mm) ............... 0.015 (0.38)
Exhaust Valve Clearance, in (mm) ............... 0.015 (0.38)

Engine Oil and Coolant

Engine Oil Type .................. SAE 30, SAE 15W-40
API Service Classifications ......................... CC or CD
Engine Oil Total Sump Capacity, qt (L) ............... 9.5 (9.0)
Engine Oil Sump Only Capacity, qt (L) ............... 8.5 (8.0)
Cooling System Fluid Capacity, qt (L) ............... 14.8 (14.0)

Service Intervals

Change oil and filter ............... Every 100 hours
Inspect air cleaner ............... Every 50 hours
Replace air cleaner ............... Every 500 hours
Replace fuel filter ............... Every 400 hours
Valve clearance adjustment ............... Every 300 hours
Fuel system inspection ............... Every 600 hours
Change coolant ............... Every 1000 hours
Compression test ............... Every 600 hours
Belt inspection ............... Every service cycle

Service Specifications

Cylinder Bore Standard Diameter, in (mm) ............... 4.2208-4.2218 (107.21-107.23)
Cylinder Bore Maximum Wear Limit, in (mm) ............... 4.2258 (107.33)
Cylinder Bore Maximum Ovality Tolerance, in (mm) ............... 0.0015 (0.038)
Cylinder Bore Maximum Taper Tolerance, in (mm) ............... 0.0020 (0.051)
Cylinder Liner Press Fit Interference, in (mm) ............... 0.0020-0.0040 (0.051-0.102)
Crankshaft Main Journal Diameter, in (mm) ............... 3.3745-3.3755 (85.712-85.738)
Crankshaft Main Journal Max Wear Limit, in (mm) ............... 3.3715 (85.636)
Crankpin Standard Journal Diameter, in (mm) ............... 2.4995-2.5005 (63.487-63.513)
Crankpin Journal Wear Limit, in (mm) ............... 2.4965 (63.411)
Main Bearing Shell to Journal Oil Clearance, in (mm) ............... 0.0022-0.0042 (0.056-0.107)
Con Rod Bearing Shell to Journal Clearance, in (mm) ............... 0.0018-0.0036 (0.045-0.091)
Crankshaft End Play, in (mm) ............... 0.0030-0.0110 (0.076-0.279)
Connecting Rod Big End Side Play, in (mm) ............... 0.0040-0.0080 (0.102-0.203)
Connecting Rod Small End Bushing I.D, in (mm) ............... 1.5003-1.5007 (38.107-38.118)
Piston Skirt to Liner Running Clearance, in (mm) ............... 0.0045-0.0055 (0.114-0.140)
Piston Pin Bore Diameter in Piston, in (mm) ............... 1.4998-1.5002 (38.095-38.105)
Piston Pin Outer Diameter, in (mm) ............... 1.4995-1.4997 (38.087-38.092)
Piston Pin to Piston Bushing Clearance, in (mm) ............... 0.0001-0.0005 (0.0025-0.0127)
Top Ring Width, in (mm) ............... 0.0937 (2.38)
Second Ring Width, in (mm) ............... 0.0937 (2.38)
Oil Ring Width, in (mm) ............... 0.1875 (4.76)
Top Ring Groove Side Clearance, in (mm) ............... 0.0025-0.0045 (0.063-0.114)
Second Ring Groove Side Clearance, in (mm) ............... 0.0020-0.0040 (0.051-0.102)
Oil Ring Groove Side Clearance, in (mm) ............... 0.0015-0.0035 (0.038-0.089)
Top Ring End Gap, in (mm) ............... 0.0110-0.0160 (0.279-0.406)
Second Ring End Gap, in (mm) ............... 0.0090-0.0140 (0.228-0.355)
Oil Ring End Gap, in (mm) ............... 0.0110-0.0160 (0.279-0.406)
Cylinder Head Surface Flatness, Limit, in (mm) ............... 0.0030 (0.076)
Cylinder Block Deck Surface Flatness, Limit, in (mm) ............... 0.0040 (0.102)
Intake Valve Stem Standard Diameter, in (mm) ............... 0.3725-0.3735 (9.461-9.487)
Exhaust Valve Stem Standard Diameter, in (mm) ............... 0.3710-0.3720 (9.423-9.449)
Intake Valve Stem to Guide Running Clearance, in (mm) ............... 0.0015-0.0035 (0.038-0.089)
Exhaust Valve Stem to Guide Running Clearance, in (mm) ............... 0.0030-0.0050 (0.076-0.127)
Cylinder Head Guide Internal Diameter, in (mm) ............... 0.3750-0.3760 (9.525-9.550)
Valve Face Angle Setting, deg ............... 29.5-30.0
Valve Seat Insert Angle Setting, deg ............... 30.0
Valve Spring Free Length, in (mm) ............... 2.1400 (54.356)
Camshaft Journal Diameter (Front), in (mm) ............... 2.2470-2.2480 (57.074-57.099)
Camshaft Journal Diameter (Center), in (mm) ............... 2.2170-2.2180 (56.312-56.337)
Camshaft Journal Diameter (Rear), in (mm) ............... 2.1870-2.1880 (55.550-55.575)
Camshaft Bearing to Journal Oil Clearance, in (mm) ............... 0.0015-0.0035 (0.038-0.089)
Camshaft End Play, in (mm) ............... 0.0020-0.0060 (0.051-0.152)

Tightening Torques

Cylinder Head Fasteners (Step 1), lb-ft (Nm) ............... 30.0 (40.6)
Cylinder Head Fasteners (Step 2), lb-ft (Nm) ............... 60.0 (81.3)
Cylinder Head Fasteners (Step 3), lb-ft (Nm) ............... 90.0 (122.0)
Cylinder Head Fasteners (Step 4), lb-ft (Nm) ............... 115.0-120.0 (155.9-162.7)
Main Bearing Cap Fasteners Secure Retention, lb-ft (Nm) ............... 115.0-125.0 (155.9-169.5)
Connecting Rod Cap Fasteners Precision Seat, lb-ft (Nm) ............... 70.0-75.0 (94.9-101.7)
Flywheel to Crankshaft Mounting Fasteners, lb-ft (Nm) ............... 80.0-85.0 (108.5-115.2)
Crankshaft Damper Pulley Central Retention Nut, lb-ft (Nm) ............... 240.0-260.0 (325.4-352.5)
Camshaft Thrust Plate Retaining Fasteners, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Camshaft Drive Gear Center Retaining Fastener, lb-ft (Nm) ............... 55.0-65.0 (74.6-88.1)
Rocker Arm Shaft Assembly Supporting Bracket Studs, lb-ft (Nm) ............... 25.0-30.0 (33.9-40.7)
Cylinder Head Top Cover Retaining Screws, lb-ft (Nm) ............... 5.0-7.0 (6.8-9.5)
Lubricating Oil Pump Assembly Base Retaining Bolts, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Engine Oil Pan Sump Perimeter Flange Fasteners, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Engine Sump Oil Drain Plug Hex Fitting, lb-ft (Nm) ............... 35.0-40.0 (47.5-54.2)
Timing Gear Housing Front Metal Cover Bolts, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Timing Gear Backing Plate to Cylinder Block Screws, lb-ft (Nm) ............... 18.0-22.0 (24.4-29.8)
Flywheel Housing Rear Frame Secure Alignment Bolts, lb-ft (Nm) ............... 40.0-45.0 (54.2-61.0)
Water Pump Assembly to Front Block Interface Bolts, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Thermostat Housing Water Outlet Flange Screws, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Fuel Injection Pump Drive Gear Hub Locknut, lb-ft (Nm) ............... 45.0-50.0 (61.0-67.8)
Fuel Injection Pump Base Flange Mounting Fasteners, lb-ft (Nm) ............... 18.0-22.0 (24.4-29.8)
Fuel Injector Clamp Down Retaining Sockets, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Fuel Injection High Pressure Line Union Nuts, lb-ft (Nm) ............... 18.0-22.0 (24.4-29.8)
Fuel Low Pressure Supply Banjo Bolt Unions, lb-ft (Nm) ............... 10.0-14.0 (13.6-19.0)
Intake Manifold Flange to Cylinder Head Screws, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)
Exhaust Manifold Flange to Cylinder Head Studs, lb-ft (Nm) ............... 18.0-22.0 (24.4-29.8)
Exhaust Pipe Outlet Connection Flange Nuts, lb-ft (Nm) ............... 25.0-30.0 (33.9-40.7)
Oil Filter Housing Adapter Central Fixing Stud, lb-ft (Nm) ............... 20.0-25.0 (27.1-33.9)
Oil Pressure Regulator Spring Retaining Cap, lb-ft (Nm) ............... 35.0-45.0 (47.5-61.0)
Starter Motor Frame Mounting Support Studs, lb-ft (Nm) ............... 35.0-40.0 (47.5-54.2)
Alternator Pivoting Bracket Tension Adjuster Lockbolt, lb-ft (Nm) ............... 15.0-20.0 (20.3-27.1)
Engine Support Front Mount Foot Brackets to Block, lb-ft (Nm) ............... 45.0-55.0 (61.0-74.6)
Air Cleaner Mounting Bracket Retention Bolts, lb-ft (Nm) ............... 15.0-18.0 (20.3-24.4)

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