Caterpillar C1.6

Caterpillar C1.6The Caterpillar C1.6 is a 1.5 L (1,508 cc, 92.0 cu·in) natural aspirated four-cylinders four-stroke liquid-cooled internal combustion vertical diesel, manufactured by Caterpillar Inc. for general-purpose applications.

The Cat C1.6 engine has a four-cylinders, cast-iron cylinder block, overhead valve design, indirect injection fuel system, 12 volts electric starter motor and 12 Volts alternator. This engine used a belt-driven coolant pump and coolant temperature switch. Lubrication system consists of a closed-circuit breather, spin-on lube oil filter, lube oil pressure switch and lube oil sump.

The Caterpillar C1.6 engine produced:

  • EU Stage IIIA emission standards: From 33.5 PS (24.6 KW; 33 HP) at 2,800 rpm to 36 PS (26.5 KW; 35.5 HP) at 3,000 rpm of maximum output power and 84.6 Nm (8.63 kg·m; 62.43 ft·lb) at 2,800 rpm of torque.
  • U.S. EPA Tier 4 Interim emission standards: From 33.5 PS (24.6 KW; 33 HP) at 2,800 rpm to 36 PS (26.5 KW; 35.5 HP) at 3,000 rpm of power.

General information

Engine Specifications
Engine modelCat C1.6
Engine type4-stroke, OHV, four-cylinders
Displacement1,508 cm3, (92.0 cu·in)
Max. horsepower EU Stage IIIA:
33.5 PS (24.6 KW; 33 HP) at 2,800 rpm to
36 PS (26.5 KW; 35.5 HP) at 3,000 rpm
U.S. EPA Tier 4 Interim:
33.5 PS (24.6 KW; 33 HP) at 2,800 rpm to
36 PS (26.5 KW; 35.5 HP) at 3,000 rpm
Torque EU Stage IIIA (Standard version):
84.4 Nm (8.6 kg·m; 62.4 ft·lb) at 3,000 rpm
Cooling systemLiquid-cooled
Lubricating systemPressure feed
Fuel systemIndirect injection
Fuel usedDiesel
Starting systemStarter motor 12 Volts
Starting aidGlow plug
Charging systemAlternator 12 Volts (40 amp)
PTO shaft rotationCounterclockwise (from flywheel end)
Dimensions (L x W x H)591 x 420 x 576 mm (23.3 x 16.5 x 22.7 in)
Dry weight106.8 kg (235.5 lbs)

Cylinder Block and Head

Cylinder bore and piston stroke are 77.0 mm (3.03 in) and 81.0 mm (3.19 in), respectively. Compression ratio rating is 22.9:1. The engine used cast iron engine block, cast iron exhaust manifold and inlet manifold with choice of inlets.

Cylinder block
Cylinder block alloy:Cast-iron
Compression ratio:22.9:1
Cylinder bore:77.0 mm (3.03 in)
Piston stroke:81.0 mm (3.19 in)
Crankshaft center distance:40.5 mm (1.595 in)
Cylinder head
Cylinder head alloy:Cast-iron
Valve arrangement:OHV
Valves:2 per cylinder, (86 valves in total)

Service Data

The engine oil with a viscosity of SAE 10W-30 is recommended for the C1.1, refilling oil capacity is 6.5 L (6.9 U.S. qts).

Oil system
Lubrication system:Pressure feed
Oil capacity:6.5 L (6.9 U.S. qts)
Cooling system
Cooling system:Liquid-cooled
Fuel system
Type:Indirect injection


1. CAT C1.6 industrial engine technical datasheet. Caterpillar.

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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We try to use official documentation and verify the published data, but errors may occur. In addition, specifications of machinery and equipment may vary depending on markets and modifications. We do not recommend the use of this data for spare parts or repairs. Use official service manuals or parts catalogs for your product.

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