Zongshen GB160

Zongshen GB160 engineThe Zongshen GB160 is a 0.2 L (163 cc, 9.95 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion small gasoline engine with a horizontal shaft from Zongshen GB-series, manufactured by Zongshen Power Co. for general-purpose applications.

The ZS GB160 engine has a single-cylinder, overhead valve (OHV) design, and recoil starter. This engine used a carburetor fuel system, transistorized magneto ignition system, splash type lubricating system, and forced-air cooling system. The ZS GB160 is equipped with a 2.6 L (0.69 US. gal. 0.57 Imp. gal.) fuel tank.

The Zongshen GB160 engine produced 4.4 PS (3.2 kW; 4.3 HP) at 3,600 rpm of maximum output power and 8.8 N·m (0.9 kg·m, 6.5 ft·lb) of peak torque.

General information

Engine Specifications
Engine model GB160
Engine type 4-stroke, OHV, single-cylinder
Displacement 163 cm3, (9.95 cu·in)
Max. horsepower 4.4 PS (3.2 kW; 4.3 HP) at 3,600 rpm
Max. torque 8.8 N·m (0.9 kg·m, 6.5 ft·lb)
Cooling system Forced air
Lubricating system Splash
Ignition system Transistorized ignition
Fuel system Carburetor
Fuel consumption 395 g/kWh
Fuel tank capacity 2.6 L (0.69 US. gal. 0.57 Imp. gal.)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil starter
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H)
Dry weight 15.0 kg (33.1 lbs)

Cylinder Block and Head

A 68.0 mm (2.68 in) cylinder bore and 45.0 mm (1.77 in) piston stroke give the GB160 engine a total of 163 cc of displacement.

Cylinder block
Compression ratio:
Cylinder bore: 68.0 mm (2.68 in)
Piston stroke: 45.0 mm (1.77 in)
Number of piston rings (compression / oil): 2/1
Number of main bearings: 2
Crankshaft center distance: 22.5 mm (0.885 in)
Cylinder head
Valve arrangement: OHV
Valves:: 2

Service Data

The 4-stroke engine oil with a viscosity of SAE 10W-30 is recommended for the GB160, refilling oil capacity is 0.6 L (0.63 US. qt, 0.53 Imp. qt.). The valve clearance is 0.10-0.15 mm (0.004-0.006 in) for intake valves and 0.15-0.20 mm (0.006-0.008 in) for exhaust valves.

Engine
Maximum speed: 3,900 rpm
Idle speed: 1,800±200 rpm
Valve clearance
Intake valve clearance (COLD): 0.10-0.15 mm (0.004-0.006 in)
Exhaust valve clearance (COLD): 0.15-0.20 mm (0.006-0.008 in)
Oil system
Lubrication system: Splash
Oil type: 4-stroke engine oil
Recommended oil: SAE 10W-30
Oil capacity: 0.6 L (0.63 US. qt, 0.53 Imp. qt.)
Fuel system
Type: Carburetor
Ignition system
Type: Transistorized ignition
Ignition timing: 23°±2° B.T.D.C.
Spark plug gap: 0.6-0.8 mm (0.0236-0.0315 in)
Spark plug torque: 20 N·m (2 kg·m, 14.7 ft·lb)

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