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Cummins 4BT engine specs

 
 

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Cummins 4BT engine specs:

Physical Characteristics 4BT Cummins engine
Weight 860 lbs 390 kgs
Length 31" 790 mm
Width 28" 711 mm
Height 35" 894 mm
Compression Ratio 17.5:1
Displacement 238 Cu Inches 3900 ml
Bore 4.02 inches 102 mm
Stroke 4.75 inches 120 mm


Torque specifications Cummins 4BT Engine
Torques (Non standard) Bolt Size Ft Lbs Nm
* Mains M14-2.00 x 119mm 130 176
Con Rod bolts / Big Ends M11-1.25 x 59mm 74 102
Front Cover M8-1.25 18 24
Oil Pick Up M8-1.25 x 16mm 18 24
Fuel pump drive lock nut . 48 65
Flywheel housing M12-1.25 x 40mm 57 77
* Flywheel bolts M12-1.25 x 32mm 101 137
Injector hold-down . 44 60
Damper . 101 137
* Cylinder Head M12-1.75 93 126
. . . .
* Lubricate with 'International Compound No 2, or Copper-Slip' or equivalent.

Settings 4BT Cummins engine
Set Inches mm
Valves Inlet (cold) 0.012 0.30
Valves Exhaust (cold) 0.024 0.61

Assembly clearances 4BT Cummins engine
Part Min - Inches Min - mm Max - Inches Max - mm
Mains 0.001 0.026 0.0047 0.120
Con Rod bolts / Big Ends 0.001 0.0254 0.0045 0.1143
Con rod side clearance 0.004 0.100 0.012 0.305
Crank end float 0.005 0.127 0.014 0.356
Front gear back lash 0.003 0.076 0.013 0.330
Cam end float 0.005 0.127 0.013 0.330
Cam back lash 0.003 0.076 0.013 0.330
Piston Protrusion . . 0.026 0.660