Kubota V1205T

Kubota V1205TThe Kubota V1205T is a 1.2 L (1,198 cc, 73.1 cu-in) straight-four, water-cooled turbocharged diesel engine from Kubota 05-series.

The Kubota V1205T engine has a spherical type сombustion сhamber with glow plug, Bosch MD type mini fuel injection pump, and mini injection nozzle. The compression ratio rating is 22.0:1.

The cylinder bore and the piston stroke are 72.0 mm (2.83 in) and 73.6 mm (2.90 in), respectively. The V1205-T diesel engine produced up to 40.5 PS (29.8 kW; 40.0 HP) at 3,600 rpm of net horsepower and 66.2 N·m (6.7 kg·m, 48.8 ft·lb) at 2,400 rpm of torque.

The breakdown of the engine code is as follows:

  • V – 4-cylinders
  • 12 – Approximate displacement 1200 cc
  • 05 – 05-series
  • T – Turbocharged

General information

Engine Specifications
Engine code V1205-T
Layout Straight-4, vertical diesel engine
Fuel type Diesel
Displacement 1.2 L, 1,198 cm3 (73.1 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 Turbocharger
Max. Horsepower 40.5 PS (29.8 kW; 40.0 HP) at 3,600 rpm*
Torque output 66.2 N·m (6.7 kg·m, 48.8 ft·lb) at 2,400 rpm*
Firing order 1-3-4-2
Dimensions (L x W x H):
Weight 114.0 kg (250.1 lbs)

*-may be differ depending on engine modification

Cylinder block

Cylinder block
Compression ratio: 22.0:1
Cylinder bore: 72.0 mm (2.83 in)
Piston stroke: 73.6 mm (2.9 in)
Number of piston rings (compression / oil): 2 / 1
Cylinder inner diameter: 72.000-72.019 mm (2.8346-2.8354 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 0.200-0.350 mm (0.0079-0.0138 in)
Second 0.200-0.350 mm (0.0079-0.0138 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

Cylinder head
Valve Arrangement: OHV, gear drive
Valves: 8 (2 valves per cylinder)
Valve head diameter: INTAKE
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
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 2.84 to 3.23 MPa, 29.0 to 33.0 kgf/cm2, 412 to 469 psi
Oil system
Recommended engine oil CF or higher
SAE Viscosity Number SAE 10W-30, 10W-40
Engine oil capacity 6.7 L (7.08 US. qt, 5.9 Imp. qt.)
Cooling system
Coolant capacity 4.5 L (4.8 US.qts, 4.0 Imp. qts)
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