A Ford Lrg-425 Efi Engine Specifications - Genie S-40 Service Manual

January 2005
REV A
Ford LRG-425 EFI Engine
Displacement
Number of cylinders
Bore & stroke
Horsepower,
gross intermittent
continuous
horsepower @ 2500 rpm
Firing order
Low idle (computer controlled)
High idle (computer controlled)
Compression ratio
Compression pressure (approx.)
Pressure (psi or bar) of lowest cylinder must be
at least 75% of highest cylinder
Valve clearances -
collapsed tappet
Lubrication system
Oil pressure
(operating temperature @ 2500 rpm)
Oil capacity
(including filter)
Oil viscosity requirements
Temperature below 60°F / 15.5°C
-10°F to 90°F / -23°C to 32°C
Temperature above
-10°F / -23°C
Temperature above
20°F / -6.6°C
Use oils meeting API classification SG (labeled SG/CC
or SG/CD) as they offer improved wear protection.
Units ship with 10W-40 SG/CC.
Part No. 102521
153 cu in
2.5 liters
4
3.78 x 3.4 inches
96.01 x 86.36 mm
97
82
70
1 - 3 - 4 - 2
1600 rpm
320 Hz
2500 rpm
500 Hz
9.4:1
0.035 to 0.055 inches
0.889 to 1.397 mm
40 to 60 psi
2.75 to 4.1 bar
4.5 quarts
4.3 liters
5W-30
10W-30
10W-40 to 10W-50
20W-40 or 20W-50
Genie S-40 and S-45
Starter motor
Normal engine cranking speed
Current draw, normal load
Current draw, maximum load
Current draw, minimum
Maximum circuit voltage drop
while starting (normal temperature)
Brush length wear limit
Maximum commutator
run-out
Battery
Type
Quantity
Cold cranking ampere
Reserve capacity @ 25A rate
Electronic fuel pump
Fuel pressure, static
Fuel flow rate
Ignition System
Spark plug type
(before serial no. 7597)
Spark plug type
(after serial no. 7596)
Spark plug gap
Engine coolant
Capacity
Alternator
Output
Section 2 • Specifications
SPECIFICATIONS
200 to 250 rpm
140-200A
800A
60-80A
0.5V DC
0.25 in
6.35 mm
0.005 inches
0.127 mm
12V, Group 31
930A
175 minutes
63 psi
4.3 bar
0.58 gpm
2.2 L/min
Motorcraft AWSF-52-C
Motorcraft AGSF-32-FM
0.042 to 0.046 inches
1.07 to 1.17 mm
11.5 quarts
10.9 liters
95A, 14.5V DC
2 - 5
1