Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque.
Essential bolt tightening torques are the main bearing cap bolt torque, the connecting rod cap bolt torque and the cylinder head bolt torques.
Useful information for owners and repairers of Cummins 4BT engines
Main Bearing Bolts 176 Nm, 130 lb.ft
Connecting Rod Bolts 102 Nm, 74 lb.ft
Cylinder head Bolts 126 Nm, 93 lb.ft
Cummins 4B, 4BT, 4BTA Displacement - 3.9 liter, 238 CID Bore - 4.02 in, 102 mm Stroke - 4.72 in, 120 mm
Arrangement 4B - 4 Cyl In-Line, natural aspiration 4BT - 4 Cyl In-Line, turbocharged 4BTA - 4 Cyl In-Line, turbo, aftercooled
Power 4B standby genset 60Hz - 40 kW, 50 kva @ 1800 rpm 50Hz - 32 kW, 40 kva @ 1500 rpm 4BTA marine 110 kW, 150 hp @ 2800 rpm
Dimensions: approx: Length 780 mm, 31 in Width 593 mm, 23 in Height 1032 mm 40 in
Weight: approx: 860 lb 390 kg
Compression ratio: 6BT marine engine 16.5:1
Page Revision #35.1RsC 02-17