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 codeD1100A
LayoutStraight-3, vertical diesel engine
Fuel typeDiesel fuel No.2-D
Displacement1.1 L, 1,115 cm3 (68.0 cu in)
Fuel injection pumpMini fuel injection pump
Fuel nozzle
Starting systemElectric starting with 12V starter
Starting support deviceGlow plug
GovernorCentrifugal ball mechanical governor
Power adderNone
Max. Horsepower23.8 PS (17.5 kW; 23.5 HP) at 2,700 rpm
Torque output
Firing order1-2-3
Dimensions (L x W x H):498 x 447 x 590 mm (19.6 x 17.6 x 23.2 in)
Weight110 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:Second0.065-0.090 mm (0.0026-0.0035 in)
Oil0.020-0.060 mm (0.0008-0.0024 in)
Piston ring end gap:Top0.300-0.450 mm (0.0118-0.0177 in)
Second0.300-0.450 mm (0.0118-0.0177 in)
Oil0.250-0.400 mm (0.0098-0.0157 in)
Piston pin outer diameter23.100 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:INTAKE1.50 mm (0.060 in)
EXHAUST1.50 mm (0.060 in)
Valve stem diameter:INTAKE7.950-7.975 mm (0.313-0.314 in)
EXHAUST7.950-7.975 mm (0.313-0.314 in)
Valve spring free length:INTAKE42.0 mm (1.6535 in)
EXHAUST42.0 mm (1.6535 in)
Camshaft cam height:INTAKE36.870 mm (1.4516 in)
EXHAUST36.870 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 valve0.18-0.22 mm (0.0071-0.0087 in)
Exhaust valve0.18-0.22 mm (0.0071-0.0087 in)
Oil system
Recommended engine oilCD or CE
SAE Viscosity NumberSAE 10W-30, 10W-40
Engine oil capacity5.3 L (5.6 US. qt, 4.66 Imp. qt.)
Fuel system
Injection timing:25° B.T.D.C.
Fuel injection pressure13.73-14.71 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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