TECHNICAL DATA TECHNICAL DATA General technical information is listed in Table 4. Table 4 General Technical Information 64 All information subject to change without notice. (Rev.
04/08) DDC-SVC-MAN-0055 04/08 Copyright © 2008 DETROIT DIESEL CORPORATION Description 4-Cylinder Engines 6-Cylinder Engines 904 924 906 926 Engine Type Vertical, inline cylinder block with turbocharger and charge-air cooler Cooling System Liquid Circuit Combustion Principle 4-Stroke direct-injection diesel Number of Cylinders 4 6 Bore 4.02 in (102 mm) 4.17 in (106 mm) 4.02 in (102 mm) 4.17 in (106 mm) Stroke 5.11 in (130 mm) 5.35 in (136 mm) 5.11 in (130 mm) 5.35 in (136 mm) Displacement (total) 259 in³ (4.25 liters) 262 in³ (4.8 liters) 389 in³ (6.37 liters) 439 in³ (7.2 liters) Compression Ratio 18.0:1 17.5:1 Starting Speed Approximately 100 rpm Direction of Engine Rotation (viewed from flywheel) Counterclockwise Starter Electric Motor Cold-Start Temperature Limit (Without starting aids and with battery 75% charged) The engine starts quickly without additional cold start device in temperatures down to -15°C (+5°F).
An optional grid heater provides easy starting in extreme temperatures down to -25°C (-13°F). For temperatures below -25°C (-13°F) an optional grid heater with preheating for coolant and lube oil is available.