Kubota D1100

Kubota D1100The Kubota D1100 is a 1.1 L (1,115 cc, 68.0 cu·in) straight-three, water-cooled naturally aspirated vertical diesel engine manufactured by Kubota.

The Kubota D1100 engine has a spherical type сombustion сhamber, mini fuel injection pump. The compression ratio rating is 21.0:1. It has a 76.0 mm (2.99 in) cylinder bore and an 82.0 mm (3.23 in) piston stroke.

The engine features a high-durability tunnel-type cylinder block with dry-type cylinder liners.

The D1100 diesel engine produced 23.8 PS (17.5 kW; 23.5 HP) at 2,700 rpm of horsepower.

The breakdown of the engine code is as follows:

  • D – 3-cylinders
  • 11 – Approximate displacement 1100 cc

General information

Engine Specifications
Engine code D1100A
Layout Straight-3, vertical diesel engine
Fuel type Diesel fuel No.2-D
Displacement 1.1 L, 1,115 cm3 (68.0 cu in)
Fuel injection pump Mini fuel injection pump
Fuel nozzle
Starting system Electric starting with 12V starter
Starting support device Glow plug
Governor Centrifugal ball mechanical governor
Power adder None
Max. Horsepower 23.8 PS (17.5 kW; 23.5 HP) at 2,700 rpm
Torque output
Firing order 1-2-3
Dimensions (L x W x H): 498 x 447 x 590 mm (19.6 x 17.6 x 23.2 in)
Weight 110 kg (242.5 lbs)

Cylinder block

Cylinder block
Compression ratio: 21.0:1
Cylinder bore: 76.0 mm (2.99 in)
Piston stroke: 82.0 mm (3.23 in)
Number of piston rings (compression / oil): 2 / 1
Cylinder inner diameter: 79.000-79.030 mm (3.1102-3.1114 in)
Piston skirt diameter
Piston ring side clearance: Second 0.065-0.090 mm (0.0026-0.0035 in)
Oil 0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap: Top 0.300-0.450 mm (0.0118-0.0177 in)
Second 0.300-0.450 mm (0.0118-0.0177 in)
Oil 0.250-0.400 mm (0.0098-0.0157 in)
Piston pin outer diameter 23.100 mm (0.9094 in)
Crankshaft main journal diameter: 51.990-52.010 mm (2.0468-2.0476 in)
Crankpin diameter: 43.880-43.900 mm (1.7276-1.7283 in)

Cylinder head

Cylinder head
Valve Arrangement: OHV, gear drive
Valves: 6 (2 valves per cylinder)
Valve timing: INTAKE
Valve seat width: INTAKE 1.50 mm (0.060 in)
EXHAUST 1.50 mm (0.060 in)
Valve stem diameter: INTAKE 7.950-7.975 mm (0.313-0.314 in)
EXHAUST 7.950-7.975 mm (0.313-0.314 in)
Valve spring free length: INTAKE 42.0 mm (1.6535 in)
EXHAUST 42.0 mm (1.6535 in)
Camshaft cam height: INTAKE 36.870 mm (1.4516 in)
EXHAUST 36.870 mm (1.4516 in)
Camshaft journal diameter: 39.935-39.950 mm (1.5722-1.5728 in)

Tightening torque

Tightening torque specs
Cylinder head cover screw: 75.0-82.0 Nm (7.7-8.4 kgf·m; 55.4-60.5 lb·ft)
Connecting rod screw: 37.0-41.0 Nm (3.8-4.2 kgf·m; 27.3-30.3 lb·ft)
Flywheel screw: 54.0-58.0 Nm (5.5-5.9 kgf·m; 39.9-42.8 lb·ft)
Idle gear shaft screws: 32.4-37.3 Nm (3.3-3.8 kgf·m; 23.9-27.5 lb·ft)
Bearing case cover mounting screw: 49.0-68.6 Nm (5-7 kgf·m; 36.2-50.6 lb·ft)

Maintenance data

Valve clearance
Intake valve 0.18-0.22 mm (0.0071-0.0087 in)
Exhaust valve 0.18-0.22 mm (0.0071-0.0087 in)
Oil system
Recommended engine oil CD or CE
SAE Viscosity Number SAE 10W-30, 10W-40
Engine oil capacity 5.3 L (5.6 US. qt, 4.66 Imp. qt.)
Fuel system
Injection timing: 25° B.T.D.C.
Fuel injection pressure 13.73-14.71 MPa (140-150 kgf/cm2, 1991-2133 psi)
Cooling system
Coolant capacity: 6.9 liters (7.3 US.qts, 6.1 Imp. qts)
Electrical system
Battery: 12V, 80Ah or equivalent
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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1 Comment

  1. How much for the D1100 engine? any type warranty. Where are you located? do you ship engines? zip 72120/ Thank you.

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