Isuzu J Series Engines

Engine Model	C240	4JB1
Engine Characteristics	4 Cycle, Water Cooled
Valvetrain Configuration	Overhead Valve
Type of Aspiration	Naturally Aspirated
Type of Injection	Indirect	Direct
Number of Cylinders	4	4
Bore x Stroke	3.39 x 4.02 in (86mm x 102mm)	3.70 x 4.00 in (93mm x 102mm)
Displacement	144 cu in (2.4 liter)	169 cu in (2.8 liter)
Compression Ratio	20:1	18.2:1
Overall Dimensions
Length	31.5" (800mm)	31.7" (805mm)
Width	21.1" (535mm)	23.3" (590mm)
Height	27.3" (694mm)	29.5" (750mm)
Dry Weight	491 lbs (223 kg)	524 lbs (238 kg)
Industrial Rating
Intermittent	56 HP @ 3000 RPM	70 HP @ 3000 RPM
Continuous	49 HP @ 3000 RPM	61 HP @ 3000 RPM
Maximum Torque	108 lb-ft @ 2000 RPM	132 lb-ft @ 2000 RPM

Performace Curve
Isuzu C240	Isuzu 4JB1
A - 108 LB-FT INTERMITTENT B - 94 LB-FT CONTINUOUS C - 56 BHP INTERMITTENT D - 49 BHP CONTINUOUS Rated within 5% at ambient conditions of: Temperature: 77° F (25° C) Pressure: 29.31 "Hg (99kPa) DRY Fuel Specific Gravity: 0.825 Intermittent Rating: (Solid Line) Continuous Rating: (Dashed Line) NOTE: Muffler & Air Cleaner not installed	A - 132 LB-FT INTERMITTENT B - 116 LB-FT CONTINUOUS C - 70 BHP INTERMITTENT D - 61 BHP CONTINUOUS Rated within 5% at ambient conditions of: Temperature: 77° F (25° C) Pressure: 29.31 "Hg (99kPa) DRY Fuel Specific Gravity: 0.825 Intermittent Rating: (Solid Line) Continuous Rating: (Dashed Line) NOTE: Muffler & Air Cleaner not installed