The Kubota Z1100 is an 1.1 L (1,070 cc, 65.3 cu·in) natural aspirated two-cylinders four-stroke liquid-cooled internal combustion vertical diesel engine, manufactured by Kubota Corporation for general-purpose applications.
The cylinder bore and piston stroke are 88.0 mm (3.46 in) and 88.0 mm (3.46 in), respectively. Compression ratio rating is 20.0:1.
The Kubota Z1100 diesel engine produced 21.1 PS (15.5 kW; 21.0 HP) at 2,700 rpm of horsepower and 60.0 Nm (6.12 kg·m; 44.28 ft·lb) at 1,600 rpm of peak torque.
The Kubota Z1100 features:
- Fuel injection pump
- Centrifugal ball mechanical governor
- Forced lubrication by pump
- Liquid cooling system
- Electric starter
- Charging alternator
General information
| Engine Specifications | |
| Engine model | Z1100A |
| Engine type | 4-stroke, vertical, two-cylinders |
| Displacement | 1,070 cm3, (65.3 cu·in) |
| Max. horsepower | 21.1 PS (15.5 kW; 21.0 HP) at 2,700 rpm |
| Max. torque | 60.0 Nm (6.12 kg·m; 44.28 ft·lb) at 1,600 rpm |
| Cooling system | Liquid-cooled |
| Lubricating system | Forced lubrication by pump |
| Combustion chamber | – |
| Fuel system | Fuel injection pump |
| Injection type | Indirect injection |
| Fuel used | Diesel fuel No.2-D |
| Starting system | Electric starter |
| Governor | Centrifugal ball mechanical governor |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
| Dimensions (L x W X H) | 397 x 447 x 543 mm (15.6 x 17.6 x 21.4 in) |
| Dry weight | 92.0 kg (202.8 lbs) |
Cylinder Block and Head
| Cylinder block | |
| Compression ratio: | 20.0:1 |
| Cylinder bore: | 88.0 mm (3.46 in) |
| Piston stroke: | 88.0 mm (3.46 in) |
| Cylinder internal diameter (standard): | 88.000-88.020 mm (3.4646-3.4653 in) |
| Piston skirt outer diameter (standard): | 87.900-87.920 mm (3.4606-3.4614 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Piston pin diameter: | 28.100 mm (1.1063 in) |
| Side clearance (Second): | 0.065-0.090 mm (0.0026-0.0035 in) |
| Side clearance (Oil): | 0.020-0.060 mm (0.0008-0.0024 in) |
| Ring end gap (Top): | 0.300-0.500 mm (0.0118-0.0197 in) |
| Ring end gap (Second): | 0.300-0.500 mm (0.0118-0.0197 in) |
| Number of main bearings: | 3 |
| Crankshaft main journal diameter (flywheel end) : | 80.020-80.039 mm (3.1504-3.1511 in) |
| Crankshaft main journal diameter (timing gear end) : | 60.011-60.024 mm (2.3626-2.3631 in) |
| Crankpin journal diameter: | 53.950-53.970 mm (2.124-2.1248 in) |
| Cylinder head | |
| Valves: | 2, (4 valves in total) |
| Valve seat width (INTAKE): | 1.500 mm (0.060 in) |
| Valve seat width (EXHAUST): | 1.500 mm (0.060 in) |
| Value seat angle (INTAKE): | 45° |
| Value seat angle (EXHAUST): | 45° |
| Valveface angle (INTAKE): | 45° |
| Valveface angle (EXHAUST): | 45° |
| Valve steam diameter (INTAKE): | 8.960-8.975 mm (0.3528-0.3533 in) |
| Valve steam diameter (EXHAUST): | 8.960-8.975 mm (0.3528-0.3533 in) |
| Valve spring free length (INTAKE): | 47.5 mm (1.8701 in) |
| Valve spring free length (EXHAUST): | 47.5 mm (1.8701 in) |
| Camshaft journal diameter (flywheel side): | 19.983-20.110 mm (0.7867-0.7917 in) |
| Camshaft journal diameter (gearcase side): | 35.002-35.013 mm (1.378-1.3785 in) |
Tightening torque
| Tightening torque specs | |
| Cylinder head screw: | 200.0-210.0 Nm (20.4-21.4 kgf·m; 147.6-155 lb·ft) |
| Connecting rod screw: | 58.0-64.0 Nm (5.9-6.5 kgf·m; 42.8-47.2 lb·ft) |
| Flywheel screw: | 110.0-115.0 Nm (11.2-11.7 kgf·m; 81.2-84.9 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: | 49.0-68.4 Nm (5.0-7.0 kgf·m; 36.2-50.5 lb·ft) |
Service Data
| Engine | |
| Maximum speed: | 2,850 rpm |
| Idle speed: | 600-650 rpm |
| Valve tappet gap | |
| Intake valve: | 0.20-0.25 mm (0.0079-0.0098 in) |
| Exhaust valve: | 0.20-0.25 mm (0.0079-0.0098 in) |
| Oil system | |
| Lubrication system: | Forced lubrication |
| Oil type: | DS or DM |
| Recommended oil: | SAE 80 |
| Oil capacity: | 5.0 L (5.28 US. qt, 4.4 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 | |
| Type: | Pressurized radiator, forced circulation with water pump |
| Coolant capacity: | 6.9 liters (7.3 US.qts, 6.1 Imp. qts) |
| Electrical system | |
| Battery: | 12V, 65AH or equivalent |
Applications
| Manufacturer or Brand | Models |
| Tractors | |
| Kubota | L210 |
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