TM 5-4310-393-14 5-5.1. ENGINE EQUIPMENT. Table 5-1.  General Engine Data Item Data Type E 673 LHK Total piston displacement 17.09 cu.  in.  (280 cu.  cm.) Working cycle Four stroke, air cooled Combustion system Direct Injection Bore 2 874 in (73 mm) Stroke 2 6387 in (67 mm) Weight of engine 106 lb.  (48 kg) Direction of rotation (when facing flywheel) CCW Rated speed (max.) 3600 rpm Idle speed 750 to 800 rpm Compression ratio 19.1 Compression pressure 294-412 psi (20-28 bar) Tappet clearance 0 004 in (0.1 mm) Table 5-2.  Fuel Injection System Item Data Injection nozzle. DNO SD21 Injection operating pressure. 1956 + 117 psi (135 + 8 bar) Injection pressure in new condition. 2021 + 118 psi (139 + 8 bar) Table 5-3.  Engine Repair Data Max. Item Size Size Perm. Remarks (In) (mm) Wear (in) Cylinder Head Bumping clearance. Cylinder head gasket thickness Tappet clearance, cold. (20 10 deg.  C) Inlet valve stem diameter. Exhaust valve stem diameter Inlet valve head diameter 0.0216/ 0.0255 0.0157/ 0.0197 0.0236/ 0.0276 0.0315 0.004 0.2740/ 0.2736 0.2740/ 0.2736 1.197/ 0.004 0.55/ 0.65 0.4/0.5 0.6/0.7 0.8 0.10 6.96/ 6.95 6.96/ 6.95 30.4/ 0.1 0.002 0.002 As required between cylinder and crankcase. Use only one cylinder head gasket with the required thickness. 5-2