________________________________________________________________________________

Ford KSG-411 Engine

General Technical Data

Engine Specifications

Engine Model ............... Ford KSG-411
Engine Type ............... 4-stroke inline 4-cylinder overhead valve liquid-cooled industrial gasoline
Number of Cylinders ............... 4
Cylinder Arrangement ............... In-line vertical
Engine Bore, in (mm) ............... 2.91 (73.96)
Engine Stroke, in (mm) ............... 2.55 (64.98)
Displacement, cu.in (L) ............... 67.12 (1.1)
Rated Engine Power, hp (kW) ............... 27.5 (20.5) at 2800 rpm
Maximum Engine Power, hp (kW) ............... 32.0 (23.9) at 3000 rpm
Continuous Rated Power, hp (kW) ............... 24.5 (18.3) at 2400 rpm
Rated Engine Speed, rpm ............... 2400-2800
Maximum Engine Speed, rpm ............... 3000
Peak Torque ............... 54 lb-ft (73.2 Nm) at 1800 rpm
Idle Speed ............... 750-850 rpm
Operating Speed Range, rpm ............... 1200-2800
Compression Ratio ............... 9.0:1
Firing Order ............... 1-3-4-2
Rotation Direction ............... Counter-clockwise viewed from flywheel end
Crankcase Ventilation System ............... Closed positive crankcase ventilation system
Camshaft Drive Mechanism ............... Short-pitch duplex timing chain with tensioner pads
Valves Per Cylinder ............... 2
Valvetrain Configuration ............... Overhead valve pushrod actuated push type
Cylinder Block Material ............... Cast iron alloy
Cylinder Head Material ............... Cast iron alloy
Number of Main Bearings ............... 5
Number of Thrust Washer ............... 2
Lubrication System ............... Full-pressure circulation
Oil Pump Type ............... Eccentric twin-rotor gear-driven
Oil Filter Type ............... Full-flow, spin-on cartridge
Cooling System ............... Forced liquid circulation with bypass thermostat
Water Pump Type ............... Belt-driven centrifugal impeller
Air Cleaner Type ............... Heavy-duty dry dual-stage element
Ignition System Type ............... Solid state electronic breakerless or mechanical distributor
Starting System ............... Electric starter motor
Electrical System ............... 12V

Fuel System

Fuel Type Capability ............... Low-lead gasoline, liquified petroleum gas, natural gas
Carburetor Manufacturer ............... Zenith or Holley industrial option
Carburetor Type ............... Single-barrel downdraft with manual choke or automatic optional solenoid
LPG Carburetor Option ............... Impco model 50 or equivalent mixer system
Natural Gas Regulator Type ............... Two-stage demand regulator secondary delivery system
Fuel Pump Type ............... Mechanical diaphragm lift pump camshaft driven
Fuel Pump Delivery Pressure, psi (kPa) ............... 3.5-5.0 (24.1-34.5)
Fuel Pump Volume Flow Minimum, pt/min (L/min) ............... 1.0 (0.47) at 2000 rpm
Fuel Filter Location ............... Inline between tank supply and lift pump inlet
Fuel Filter Micron Rating ............... 10-15 nominal filtration grade
Intake Manifold Design ............... Single-plane cast iron with integrated exhaust hotspot plenum
Governor Type ............... Mechanical centrifugal flyweight or electronic velocity control
Governor Linkage Config ............... Spring-loaded dampening control rod to throttle shaft arm
Air-Fuel Ratio Target Range ............... 12.8:1-14.7:1 under operational load conditions
Idle Mixture Adjustment ............... Needle valve needle adjustment with limiter cap assembly
Main Jet Size Standard ............... 0.045 in fixed orifice diameter
Choke Cable Travel Length, in (mm) ............... 1.25 (31.75)
Fuel Tank Vent System ............... Non-vented cap with carbon canister lines or open vent port
Maximum Inlet Fuel Temperature, deg F (deg C) ............... 110 (43.3)
Gas Solenoid Lock-Off Voltage ............... 12V direct current supply line
Gas Solenoid Current Draw, A ............... 1.5 maximum continuous draw

Dimensions and Weight

Overall Length, in (mm) ............... 21.4 (545)
Overall Width, in (mm) ............... 18.9 (480)
Overall Height, in (mm) ............... 24.2 (615)
Dry Weight, lbs (kg) ............... 215 (97.5)
Wet Weight, lbs (kg) ............... 235 (107)

Maintenance Data

Service Information

Compression Pressure, psi (kPa) ............... 155-196 (1068-1351)
Oil Pressure at Rated Speed, psi (kPa) ............... 35-55 (241.3-379.2)
Oil Pressure at Idle Speed, psi (kPa) ............... 10 (68.9)
Oil Pressure Relief Valve Setting, psi (kPa) ............... 60 (413.7)
Thermostat Opening Temperature, F (C) ............... 180 (82.2)
Thermostat Full Open Temperature, F (C) ............... 202 (94.4)
Spark Plug Gap, in (mm) ............... 0.030 (0.76)
Distributor Point Gap, in (mm) ............... 0.015 (0.38)
Ignition Timing, degrees BTDC ............... 6-10
Alternator Belt Tension Deflection, in (mm) ............... 0.25-0.375 (6.35-9.52)
Intake Valve Lash (Hot), in (mm) ............... 0.008 (0.203)
Exhaust Valve Lash (Hot), in (mm) ............... 0.018 (0.457)
Intake Valve Lash (Cold), in (mm) ............... 0.010 (0.254)
Exhaust Valve Lash (Cold), in (mm) ............... 0.020 (0.508)

Engine Oil and Coolant

Engine Oil Type .................. SAE 5W-30, 10W-30
API Service Classifications ......................... SG, SH, or higher
Engine Oil Capacity with Filter, qt (L) ............... 3.5 (3.3)
Engine Oil Capacity without Filter, qt (L) ............... 3.0 (2.85)
Cooling System Fluid Capacity, qt (L) ............... 5.5 (5.2)

Service Intervals

Change engine oil ............... Every 100 hours
Replace oil filter ............... Every 100 hours
Replace fuel filter ............... Every 500 hours
Inspect air filter ............... Every 50 hours
Replace air filter ............... Every 250 hours
Change coolant ............... Every 1000 hours
Valve-lash adjustment ............... Every 300 hours
Check fuel system ............... Every 1000 hours
Replace spark plug ............... Every 500 hours
Compression test ............... Every 1000 hours
Belt inspection ............... Every 100 hours

Service Specifications

Cylinder Bore Diameter Standard Size, in (mm) ............... 2.911-2.913 (73.960-73.991)
Cylinder Bore Maximum Out of Round, in (mm) ............... 0.0005 (0.0127)
Cylinder Bore Maximum Taper, in (mm) ............... 0.0010 (0.0254)
Crankshaft Main Journal Diameter, in (mm) ............... 2.249-2.250 (57.12-57.15)
Crankshaft Main Bearing Clearance, in (mm) ............... 0.0008-0.0026 (0.020-0.066)
Crankshaft End Play, in (mm) ............... 0.003-0.007 (0.076-0.178)
Crankshaft Thrust Journal Width, in (mm) ............... 1.062-1.064 (26.97-27.02)
Connecting Rod Journal Diameter, in (mm) ............... 1.937-1.938 (49.20-49.22)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0006-0.0024 (0.015-0.061)
Connecting Rod Side Clearance, in (mm) ............... 0.004-0.010 (0.102-0.254)
Piston Skirt Outer Diameter, in (mm) ............... 2.908-2.909 (73.86-73.88)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0015-0.0021 (0.038-0.053)
Piston Pin Bore Inside Diameter, in (mm) ............... 0.8123-0.8126 (20.632-20.640)
Piston Pin Diameter, in (mm) ............... 0.8120-0.8122 (20.625-20.630)
Piston Pin to Piston Pin Bore Clearance, in (mm) ............... 0.0002-0.0004 (0.0051-0.0102)
Piston Pin to Con Rod Bushing Clearance, in (mm) ............... 0.0003-0.0005 (0.0076-0.0127)
Top Ring Groove Width, in (mm) ............... 0.079-0.080 (2.00-2.03)
Second Ring Groove Width, in (mm) ............... 0.079-0.080 (2.00-2.03)
Oil Ring Groove Width, in (mm) ............... 0.158-0.159 (4.01-4.04)
Top Ring Side Clearance, in (mm) ............... 0.002-0.004 (0.051-0.102)
Second Ring Side Clearance, in (mm) ............... 0.002-0.004 (0.051-0.102)
Oil Ring Side Clearance, in (mm) ............... 0.0015-0.0035 (0.038-0.089)
Top Ring End Gap, in (mm) ............... 0.009-0.017 (0.228-0.431)
Second Ring End Gap, in (mm) ............... 0.009-0.017 (0.228-0.431)
Oil Ring End Gap, in (mm) ............... 0.015-0.035 (0.381-0.889)
Intake Valve Head Diameter, in (mm) ............... 1.412-1.422 (35.86-36.12)
Exhaust Valve Head Diameter, in (mm) ............... 1.147-1.157 (29.13-29.39)
Intake Valve Stem Outer Diameter, in (mm) ............... 0.310-0.311 (7.87-7.90)
Exhaust Valve Stem Outer Diameter, in (mm) ............... 0.309-0.310 (7.85-7.87)
Intake Valve Guide Inside Diameter, in (mm) ............... 0.312-0.313 (7.92-7.95)
Exhaust Valve Guide Inside Diameter, in (mm) ............... 0.312-0.314 (7.92-7.97)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0010-0.0025 (0.025-0.063)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0020-0.0035 (0.051-0.089)
Valve Face Angle, degrees ............... 45
Valve Seat Angle, degrees ............... 46
Valve Spring Free Length, in (mm) ............... 1.765 (44.83)
Camshaft Journal Diameter (Number 1), in (mm) ............... 1.789-1.790 (45.44-45.46)
Camshaft Journal Diameter (Number 2), in (mm) ............... 1.774-1.775 (45.06-45.08)
Camshaft Journal Diameter (Number 3), in (mm) ............... 1.759-1.760 (44.68-44.70)
Camshaft Bearing Clearance, in (mm) ............... 0.001-0.003 (0.025-0.076)
Cam Lobe Height (Intake), in (mm) ............... 0.235 (5.969)
Cam Lobe Height (Exhaust), in (mm) ............... 0.235 (5.969)
Camshaft End Play, in (mm) ............... 0.002-0.006 (0.051-0.152)
Rocker Shaft Outside Diameter, in (mm) ............... 0.623-0.624 (15.82-15.85)
Rocker Arm Bore Internal Diameter, in (mm) ............... 0.625-0.626 (15.87-15.90)
Rocker Arm to Shaft Clearance, in (mm) ............... 0.001-0.003 (0.025-0.076)
Tappet Lifter Outside Diameter, in (mm) ............... 0.874-0.875 (22.20-22.22)
Tappet Bore Diameter In Block, in (mm) ............... 0.875-0.876 (22.22-22.25)
Tappet to Block Clearance, in (mm) ............... 0.0006-0.0021 (0.015-0.053)

Tightening Torques

Cylinder Head Bolts (Step 1), lb-ft (Nm) ............... 30 (40.6)
Cylinder Head Bolts (Step 2), lb-ft (Nm) ............... 50 (67.8)
Cylinder Head Bolts (Step 3), lb-ft (Nm) ............... 65-70 (88.1-94.9)
Main Bearing Cap Bolts, lb-ft (Nm) ............... 55-60 (74.5-81.3)
Connecting Rod Cap Nuts, lb-ft (Nm) ............... 22-26 (29.8-35.2)
Flywheel to Crankshaft Flange Bolts, lb-ft (Nm) ............... 45-50 (61.0-67.8)
Crankshaft Pulley Damper Center Bolt, lb-ft (Nm) ............... 70-80 (94.9-108.4)
Camshaft Thrust Spring Plate Screws, lb-ft (Nm) ............... 6-9 (8.1-12.2)
Camshaft Sproquet Timing Chain Bolt, lb-ft (Nm) ............... 40-45 (54.2-61.0)
Cylinder Front Cover Timing Box Bolts, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Rocker Arm Shaft Stand Support Bolts, lb-ft (Nm) ............... 25-30 (33.9-40.6)
Valve Rocker Arm Cover Sealing Screws, lb-ft (Nm) ............... 3-5 (4.1-6.7)
Oil Pan Assembly Outer Rail Bolts, lb-ft (Nm) ............... 7-9 (9.5-12.2)
Oil Pan Large Center Drain Plug, lb-ft (Nm) ............... 20-25 (27.1-33.9)
Oil Pump Assembly to Cylinder Block, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Oil Pump Inner Cover Retaining Plate, lb-ft (Nm) ............... 7-9 (9.5-12.2)
Intake Manifold Mounting Hex Bolts, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Exhaust Manifold Center Clamp Nuts, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Water Pump Casing Assembly Fasteners, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Water Pump Outlet Thermostat Housing, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Distributor Hold-Down Fork Clamp Bolt, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Fuel Lift Pump Flange Mounting Studs, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Carburetor Air Inlet Adapter Assembly, lb-ft (Nm) ............... 7-9 (9.5-12.2)
Starter Motor Frame Mounting Stud Fasteners, lb-ft (Nm) ............... 30-35 (40.6-47.4)
Alternator Pivot Mount Heavy Pivot Bolt, lb-ft (Nm) ............... 25-30 (33.9-40.6)
Alternator Adjustment Tension Strut Bolt, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Spark Plug Base Threads Cleaned Dry, lb-ft (Nm) ............... 15-20 (20.3-27.1)
Oil Pressure Sending Unit Switch Hex, lb-ft (Nm) ............... 8-12 (10.8-16.2)
Coolant Temperature Sensor Housing Hex, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Flywheel Housing to Engine Block Outer, lb-ft (Nm) ............... 40-45 (54.2-61.0)
Governor Housing Driver Gear Hex Nut, lb-ft (Nm) ............... 25-30 (33.9-40.6)
Fuel Mixer Carburetor Base Mounting Flange, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Manifold Shield Heat Deflector Fasteners, lb-ft (Nm) ............... 6-8 (8.1-10.8)
Crankcase Breather Valve Baffle Bolt, lb-ft (Nm) ............... 7-9 (9.5-12.2)
Timing Chain Tensioner Support Base Bolt, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Front Crankshaft Oil Seal Carrier Plate, lb-ft (Nm) ............... 7-9 (9.5-12.2)
Rear Crankshaft Oil Seal Retainer Housing, lb-ft (Nm) ............... 7-9 (9.5-12.2)
Oil Pick-Up Tube Bracket to Main Cap, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Oil Pick-Up Tube Pipe Union to Block, lb-ft (Nm) ............... 18-22 (24.4-29.8)
Fuel Injection Adapter Ring, if Equipped, lb-ft (Nm) ............... 15-18 (20.3-24.4)
Exhaust Flange Piping Extension Nuts, lb-ft (Nm) ............... 25-30 (33.9-40.6)
Fan Assembly Blade to Hub Center Screws, lb-ft (Nm) ............... 12-15 (16.2-20.3)
Bellhousing Alignment Dowel Pin Secure Studs, lb-ft (Nm) ............... 35-40 (47.4-54.2)

________________________________________________________________________________________

• Ford Engines Specs
  
• Ford CSG-649 Specs
  
• Ford CSG-649i Specs
  
• Ford KSG-416 Specs
  
• Ford 2274E Specs
  

______________________________________________________________________________________

________________________________________________________________________________________

_______________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________

________________________________________________________________________________________