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Ford CSG-649 Engine

General Technical Data

Engine Specifications

Engine Model ............... Ford CSG-649
Engine Type ............... 4-cycle inline 6-cylinder overhead valve industrial gas engine
Number of Cylinders ............... 6
Cylinder Arrangement ............... In-line
Engine Bore, in (mm) ............... 4.00 (101.6)
Engine Stroke, in (mm) ............... 3.98 (101.1)
Displacement, cu.in (L) ............... 300 (4.9)
Rated Engine Power, hp (kW) ............... 150 (110) at 3400 rpm
Rated Engine Speed, rpm ............... 1800-3400
Peak Torque ............... 260 lb-ft (353 Nm) at 2000 rpm
Idle Speed ............... 700-800 rpm
Operating Speed ............... 1800-2800 rpm
Compression Ratio ............... 8.8:1
Firing Order ............... 1-5-3-6-2-4
Cylinder Block Type ............... Cast iron
Cylinder Head Type ............... Cast iron D-shaped combustion chambers
Lubrication System ............... Full-pressure feed
Oil Pump Type ............... Rotor type gear-driven
Oil Filter Type ............... Full-flow, spin-on cartridge
Cooling System ............... Liquid-cooled centrifugal pump
Water Pump Type ............... Belt-driven heavy duty 0.75 in shaft bearing
Air Cleaner Type ............... Dry dual-stage heavy duty
Starting System ............... Electric starter motor
Electrical System ............... 12V negative ground
Alternator Rating ............... 40-60A

Fuel System

Fuel Type Designation ............... Gasoline, Natural Gas, LPG liquefied petroleum gas
Carburetor Manufacturer ............... Carter or Zenith industrial model single barrel
Fuel Pump Type ............... Mechanical diaphragm engine block mounted
Fuel Pump Pressure, psi (kPa) ............... 4.0-6.0 (27.6-41.4)
Governor Type ............... Electronic or mechanical flyweight auxiliary system
Governor Speed Regulation ............... 1 percent to 5 percent continuous regulation
Natural Gas Regulator Type ............... Secondary zero governor demand type regulator
LPG Converter Type ............... Two stage vaporizer heated water jacket circuit
Air Fuel Ratio Controller ............... Closed loop electronic fuel feedback actuator
Fuel Filter Type ............... Inline pleated paper micron element tank line

Dimensions and Weight

Overall Length, in (mm) ............... 38.4 (975)
Overall Width, in (mm) ............... 24.2 (615)
Overall Height, in (mm) ............... 34.8 (885)
Dry Weight, lbs (kg) ............... 485 (220)
Wet Weight, lbs (kg) ............... 525 (238)

Maintenance Data

Service Information

Compression Pressure, Low Limit, psi (kPa) ............... 130.0 (896.3)
Maximum Cylinder Pressure Variation, psi (kPa) ............... 15.0 (103.4)
Oil Pressure at Rated Speed, psi (kPa) ............... 40.0-60.0 (275.8-413.7)
Oil Pressure at Low Idle, psi (kPa) ............... 15.0 (103.4)
Thermostat Opening Temperature, F (C) ............... 180.0 (82.2)
Thermostat Full Open Temperature, F (C) ............... 202.0 (94.4)
Coolant Operating Temperature, F (C) ............... 185.0-195.0 (85.0-90.5)
Spark Plug Type ............... Motorcraft ASF-42 or equivalent
Spark Plug Gap, in (mm) ............... 0.032-0.036 (0.81-0.91)
Distributor Point Gap, in (mm) ............... 0.024-0.026 (0.61-0.66)
Ignition Timing, deg BTDC ............... 6-10

Engine Oil and Coolant

Engine Oil Type .................. SAE 5W-30, 10W-30
API Service Classifications ......................... SG/SH
Engine Oil Capacity with Filter, qt (L) ............... 6.0 (5.7)
Engine Oil Capacity without Filter, qt (L) ............... 5.0 (4.7)
Cooling System Capacity, qt (L) ............... 13.5 (12.8)

Service Intervals

Change engine oil ............... Every 100 hours
Replace oil filter ............... Every 100 hours
Replace fuel filter ............... Every 250 hours
Inspect air filter ............... Every 50 hours
Replace air filter ............... Every 250 hours
Change coolant ............... Every 1000 hours
Valve-lash adjustment ............... Every 500 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 Inside Diameter, in (mm) ............... 4.000-4.002 (101.600-101.651)
Cylinder Bore Out of Round, in (mm) ............... 0.0015 (0.038)
Cylinder Bore Taper Limit, in (mm) ............... 0.005 (0.127)
Main Bearing Journal Diameter, in (mm) ............... 2.398-2.399 (60.909-60.935)
Main Bearing Clearance, in (mm) ............... 0.0008-0.0026 (0.020-0.066)
Connecting Rod Journal Diameter, in (mm) ............... 2.123-2.124 (53.924-53.950)
Connecting Rod Bearing Clearance, in (mm) ............... 0.0008-0.0026 (0.020-0.066)
Connecting Rod Side Clearance, in (mm) ............... 0.007-0.013 (0.178-0.330)
Crankshaft End Play, in (mm) ............... 0.004-0.008 (0.102-0.203)
Piston to Cylinder Bore Clearance, in (mm) ............... 0.0014-0.0022 (0.036-0.056)
Piston Pin Diameter, in (mm) ............... 0.975-0.976 (24.765-24.790)
Piston Pin to Con Rod Bushing Clearance, in (mm) ............... 0.0003-0.0005 (0.008-0.013)
Top Ring Groove Clearance, in (mm) ............... 0.002-0.004 (0.051-0.102)
Second Ring Groove Clearance, in (mm) ............... 0.002-0.004 (0.051-0.102)
Top Ring End Gap Compression Top, in (mm) ............... 0.010-0.020 (0.254-0.508)
Second Ring End Gap Compression Second, in (mm) ............... 0.010-0.020 (0.254-0.508)
Oil Ring End Gap Oil Control, in (mm) ............... 0.015-0.035 (0.381-0.889)
Intake Valve Stem Diameter, in (mm) ............... 0.341-0.342 (8.661-8.687)
Exhaust Valve Stem Diameter, in (mm) ............... 0.340-0.341 (8.636-8.661)
Intake Valve Stem to Guide Clearance, in (mm) ............... 0.0010-0.0027 (0.025-0.069)
Exhaust Valve Stem to Guide Clearance, in (mm) ............... 0.0020-0.0037 (0.051-0.094)
Valve Face Angle, degrees ............... 44
Valve Seat Angle, degrees ............... 45
Valve Spring Free Length, in (mm) ............... 2.11 (53.6)
Camshaft Journal Diameter, in (mm) ............... 2.027-2.028 (51.486-51.511)
Camshaft Bearing Clearance, in (mm) ............... 0.001-0.003 (0.025-0.076)
Camshaft End Play, in (mm) ............... 0.001-0.007 (0.025-0.178)
Cam Lobe Lift (Intake), in (mm) ............... 0.249 (6.32)
Cam Lobe Lift (Exhaust), in (mm) ............... 0.249 (6.32)
Lifter Bore Inside Diameter, in (mm) ............... 0.875-0.876 (22.225-22.250)
Tappet Lifter Outside Diameter, in (mm) ............... 0.874-0.875 (22.199-22.225)
Tappet to Lifter Bore Clearance, in (mm) ............... 0.001-0.002 (0.025-0.051)

Tightening Torques

Cylinder Head Bolts (Step One), lb-ft (Nm) ............... 50.0 (67.8)
Cylinder Head Bolts (Step Two), lb-ft (Nm) ............... 75.0 (101.7)
Cylinder Head Bolts (Step Three), lb-ft (Nm) ............... 130.0 (176.3)
Main Bearing Cap Bolts, lb-ft (Nm) ............... 60.0-70.0 (81.3-94.9)
Connecting Rod Cap Nuts, lb-ft (Nm) ............... 40.0-45.0 (54.2-61.0)
Flywheel to Crankshaft Bolts, lb-ft (Nm) ............... 75.0-85.0 (101.7-115.2)
Vibration Damper Pulley Bolt, lb-ft (Nm) ............... 130.0-150.0 (176.3-203.4)
Intake Manifold Assembly Bolts, lb-ft (Nm) ............... 22.0-32.0 (29.8-43.4)
Exhaust Manifold Assembly Bolts, lb-ft (Nm) ............... 22.0-32.0 (29.8-43.4)
Rocker Arm Stud Nut, lb-ft (Nm) ............... 65.0-75.0 (88.1-101.7)
Rocker Arm Fulcrum Bolt, lb-ft (Nm) ............... 17.0-23.0 (23.0-31.2)
Valve Rocker Arm Cover Screws, lb-ft (Nm) ............... 6.0-9.0 (8.1-12.2)
Oil Pan Mounting Perimeter Bolts, lb-ft (Nm) ............... 10.0-15.0 (13.6-20.3)
Oil Pan Drain Plug, lb-ft (Nm) ............... 15.0-25.0 (20.3-33.9)
Oil Pump to Cylinder Block Bolt, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Water Pump to Block Fasteners, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Timing Gear Cover Screws, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Camshaft Thrust Plate Bolts, lb-ft (Nm) ............... 9.0-12.0 (12.2-16.3)
Spark Plug, lb-ft (Nm) ............... 15.0-20.0 (20.3-27.1)
Distributor Hold Down Bolt, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Fuel Pump Mechanical Bolts, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Alternator Mounting Bracket Bolt, lb-ft (Nm) ............... 40.0-50.0 (54.2-67.8)
Starter Motor Mounting Bolts, lb-ft (Nm) ............... 15.0-20.0 (20.3-27.1)
Flywheel Housing to Block Fasteners, lb-ft (Nm) ............... 40.0-50.0 (54.2-67.8)
Thermostat Housing Bolts, lb-ft (Nm) ............... 12.0-15.0 (16.3-20.3)
Oil Filter Adaptor Center Bolt, lb-ft (Nm) ............... 25.0-35.0 (33.9-47.4)

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• Ford Engines Specs
  
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