Kubota D1105 (1.1 L) Diesel Engine: Specs, Review & Service Data
Kubota D1105 Engine Specs
The Kubota D1005 is a 1.1 L 68.5 cu-in, 1,123 cc, straight-three, water-cooled naturally aspirated diesel engine from the Kubota 05 series.
The Kubota D1105 engine has a spherical type сombustion сhamber with a Bosch MD type mini fuel injection pump, glow plug, and mini injection nozzle.
The Kubota D1105 engine compression ratio rating is 22.0:1 for the early version (D1105-B(E)) or 24.0:1 for the later versions (EPA Tier 2, 3, 4). The cylinder bore and the piston stroke are 3.07 in (78.0 mm ) and 3.09 in (78.4 mm), respectively.
The Kubota D1105 diesel engine delivered up to 25.4 PS (18.7 kW; 25.0 HP) at 3,000 rpm of horsepower and 68.3 N·m (7 kg·m, 50.3 ft·lb) at 2,000 rpm of torque.
The breakdown of the engine code is as follows:
- D – 3-cylinders
- 11 – Approximate displacement 1,100 cc
- 05 – 05-series
Kubota D1105 (1.1 L) Diesel Engine Specifications
Engine Specs
| Engine code | D1105 |
| Layout | Straight-3, vertical |
| Fuel type | Diesel |
| Production | – |
| Displacement | 1.1 L, 1,123 cm3 (68.5 cu in) |
| Fuel injection pump | Bosch MD type mini fuel injection pump |
| Fuel nozzle | Mini nozzle |
| Starting system | Electric starting with 12V starter |
| Starting support device | Glow plug in combustion chamber |
| Governor | All speed mechanical governor |
| Power adder | None |
| Max. Horsepower | 25.4 PS (18.7 kW; 25.0 HP) at 3,000 rpm* |
| Torque output | 68.3 N·m (7 kg·m, 50.3 ft·lb) at 2,000 rpm* |
| Firing order | 1-2-3 |
| Dimensions (L x W x H): | 498 x 397 x 609 mm (19.6 x 15.6 x 24 in) |
| Weight | 95 kg (210 lbs) |
Cylinder block
| Compression ratio: | 22.0:1 or 24.0:1 | |
| Cylinder bore: | 78.0 mm (3.07 in) | |
| Piston stroke: | 78.4 mm (3.09 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Cylinder inner diameter: | 78.00-78.019 mm (3.0709-3.0716 in) | |
| Piston skirt diameter | – | |
| Piston ring side clearance: | Second | 0.085-0.112 mm (0.0033-0.0044 in) |
| Oil | 0.020-0.055 mm (0.0008-0.0022 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 | 22.002-22.011 mm (0.8662-0.8666 in) | |
| Crankshaft main journal diameter: | 1,2: 47.934-47.950 mm (1.8872-1.8878 in) 3: 51.921-51.940 mm (2.0442-2.0448 in) | |
| Crankpin diameter: | 39.959-39.975 mm (1.5732-1.5738 in) | |
Cylinder head
| Valve Arrangement: | SOHC, gear drive | |
| Valves: | 6 (2 valves per cylinder) | |
| Valve head diameter: | INTAKE | – |
| EXHAUST | – | |
| Valve length: | INTAKE | 101.5 mm (3.99 in) |
| EXHAUST | 101.5 mm (3.99 in) | |
| Valve stem diameter: | INTAKE | 6.960-6.975 mm (0.274-0.2746 in) |
| EXHAUST | 6.960-6.975 mm (0.274-0.2746 in) | |
| Valve spring free length: | INTAKE | 37.0-37.5 mm (1.4567-1.4764 in) |
| EXHAUST | 37.0-37.5 mm (1.4567-1.4764 in) | |
| Camshaft lobe height: | INTAKE | 28.80 mm (1.1339 in) |
| EXHAUST | 29.00 mm (1.1417 in) | |
| Camshaft journal diameter: | 35.934-35.950 mm (1.4147-1.4154 in) | |
Maintenance Data
| Valve clearance (HOT) | |
| Intake valve | 0.145-0.185 mm (0.0057-0.0073 in) |
| Exhaust valve | 0.145-0.185 mm (0.0057-0.0073 in) |
| Compression pressure | |
| Standard | D1105-B(E): 2.84 to 3.23 MPa, 29.0 to 33.0 kgf/cm2, 412 to 469 psi Other: 3.73 to 4.11 MPa, 38.0 to 42.0 kgf/cm2, 541 to 597 psi |
| Oil system | |
| Recommended engine oil | CF or higher |
| SAE Viscosity Number | SAE 10W-30, 10W-40 |
| Engine oil capacity | 101 mm: 4.0 L (4.23 US. qt, 3.52 Imp. qt.) 125 mm: 5.1 L (5.40 US. qt, 4.50 Imp. qt.) |
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Final Words
This concludes our discussion of the Kubota D1105 (1.1 L) Diesel Engine specs and review; however, if you have any questions regarding this article, please submit them in the comment section below. We will do our best to respond to you as soon as possible.
