Honda GXV160

Honda GXV160The Honda GXV160 is an 163 cc, (9.95 cu·in) natural aspirated single-cylinder four-stroke air-cooled internal combustion gasoline engine with a vertical shaft, manufactured by Honda Motor Company for general-purpose applications.

A 68.0 mm (2.68 in) cylinder bore and 45.0 mm (1.77 in) piston stroke give the GXV160 engine a total of 163 cc of displacement. The compression ratio rating is 8.0:1.

This engine produced 6.0 PS (4.4 kW; 6.0 HP) at 3,600 rpm of horsepower and 10.8 N·m (1.1 kg·m, 8 ft·lb) at 2,500 rpm of torque.

The Honda GXV160 features:

  • OHV desig
  • Transistorized magneto ignition system
  • Horizontal type carburetor with butterfly valve
  • Centrifugal governor
  • Splash lubrication system
  • Forced air cooling system
  • Recoil or electric starter

General information

Engine Specifications
Engine model GXV160
Engine type 4-stroke, OHV, single-cylinder
Displacement 163 cm3, (9.95 cu·in)
Max. horsepower 6.0 PS (4.4 kW; 6.0 HP) at 3,600 rpm
Max. torque 10.8 N·m (1.1 kg·m, 8 ft·lb) at 2,500 rpm
Cooling system Forced air
Lubricating system Splash
Ignition system Transistorized magneto ignition
Fuel system Horizontal type carburetor with butterfly valve
Fuel consumption 250 g/HPh
Fuel tank capacity 2.0 L (0.53 US. gal. 0.44 Imp. gal.)
Fuel used Unleaded gasoline (octane number 86 or higher)
Starting system Recoil or electric starter
Stoping system Ignition primary circuit ground
Governor Centrifugal governor
PTO shaft rotation Counterclockwise (from PTO shaft side)
Dimensions (L x W X H) 435 x 345 x 355 mm (17.1 x 13.6 x 14 in)
Dry weight 15.5 kg (34.2 lbs)

Cylinder Block and Head

Cylinder block
Compression ratio: 8.0:1
Cylinder bore: 68.0 mm (2.68 in)
Piston stroke: 45.0 mm (1.77 in)
Cylinder internal diameter (standard): 68.000 mm (2.6772 in)
Piston skirt outer diameter (standard): 67.985 mm (2.6766 in)
Number of piston rings (compression / oil): 2/1
Connecting rod big end diameter (standard): 30.020 mm (1.1819 in)
Connecting rod small end diameter (standard): 18.005 mm (0.7089 in)
Piston pin diameter: 18.000 mm (0.7087 in)
Side clearance (Top): 0.030-0.065 mm (0.0012-0.0026 in)
Side clearance (Second): 0.030-0.65 mm (0.0012-0.0256 in)
Ring end gap (Top): 0.200-0.400 mm (0.0079-0.0157 in)
Ring end gap (Second): 0.200-0.400 mm (0.0079-0.0157 in)
Ring end gap (Oil): 0.150-0.350 mm (0.0059-0.0138 in)
Ring width (Top): 1.500 mm (0.0591 in)
Ring width (Second): 1.500 mm (0.0591 in)
Ring width (Oil): 2.500 mm (0.0984 in)
Crankpin journal diameter: 29.980 mm (1.1803 in)
Cylinder head
Valve arrangement: OHV, gear driven
Valves: 2
Valve steam diameter (INTAKE): 5.480 mm (0.2157 in)
Valve steam diameter (EXHAUST): 5.440 mm (0.2142 in)
Valve spring free length (INTAKE): 34.000 mm (1.3386 in)
Valve spring free length (EXHAUST): 34.000 mm (1.3386 in)
Camshaft lobe height (INTAKE): 27.700 mm (1.0905 in)
Camshaft lobe height (EXHAUST): 27.750 mm (1.0925 in)
Camshaft journal diameter : 13.984 mm (0.5506 in)

Tightening torque specs

Tightening torque specs
Connecting rod lower cap 12 Nm; 1.2 kg·m; 9 ft·lb
Cylinder head bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Flywheel nut 75 Nm; 7.5 kg·m; 54 ft·lb
Pivot adjusting nut 10 Nm; 1.0 kg·m; 7 ft·lb
Pivot bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Oil filter extension 10 Nm; 1.0 kg·m; 7 ft·lb
Oil drain bolt 18 Nm; 1.8 kg·m; 13 ft·lb
Oil pan 24 Nm; 2.4 kg·m; 17 ft·lb
Standard torque values
Bolt, nut (5 mm) 5.5 Nm; 0.55 kg·m; 4.0 ft·lb
Bolt, nut (6 mm) 10 Nm; 1.0 kg·m; 7 ft·lb
Bolt, nut (8 mm) 24 Nm; 2.4 kg·m; 17 ft·lb
Bolt, nut (10 mm) 37.5 Nm; 3.75 kg·m; 27 ft·lb
Bolt, nut (12 mm) 55 Nm; 5.5 kg·m; 40 ft·lb

Service Data

Engine
Maximum speed: 3,200 ± 100 rpm
Idle speed: 1,700 ± 150 rpm
Cylinder compression: 5.0-8.0 kg/cm2 (71-114 psi) at 600 rpm
Valve clearance
Intake valve clearance: 0.13-0.17 mm (0.0051-0.0067 in)
Exhaust valve clearance: 0.18-0.22 mm (0.0071-0.0087 in)
Oil system
Lubrication system: Splash
Oil type: Honda 4-stroke or an equivalent (SE or SF)
Recommended oil: SAE 10W-30
Oil capacity: 0.6 L (0.63 US. qt, 0.53 Imp. qt.)
Fuel system
Type: Horizontal type carburetor with butterfly valve
Main jet: #70
Float height: 12.2-15.2 mm (0.48-0.60 in)
Pilot screw opening: 2 turns out
Ignition system
Type: Transistorized magneto ignition
Ignition timing: 20° B.T.D.C. (Fixed)
Spark plug: NGK: BP5ES, BPR5ES NIPPONDENSO: W16EP-U, W16EPR-U
Spark plug gap: 0.7-0.8 mm (0.0276-0.0315 in)
Ignition coil air gap 0.3-0.5 mm (0.0118-0.0197 in)

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