The Honda GS160 is a small 0.16 l (160 cc, 9.8 cu.in.) single-cylinder air-cooled 4-stroke internal combustion gasoline engine with horizontal shaft, manufactured by Honda Motor Company for general-purpose applications, such as pressure washers tillers and cultivators, agricultural equipment, water pumps.
The Honda GS160 engine has a single-cylinder with a cast-iron cylinder liner, compact combustion chamber, tough resin overhead cam for durability and quietness and uniblock construction reduce fuel consumption. The GS160 engine has transistorized magneto ignition, horizontal type carburetor with butterfly valve and recoil starter.
A 64 mm (2.5 in) cylinder bore and 50 mm (2.0 in) piston stroke give the engine a total of 160 cm3 of displacement. Compression ratio is 8.5:1. It produces 3.7 kW (5.0 HP) at 3,600 rpm and 10.3 N·m (1.05 kg·m, 7.6 ft·lb) of torque at 2,500 rpm.
General information
Engine Specifications
Model
GS160
Type
4-stroke, OHС, single cylinder
Displacement
160 cm 3 (9.8 cu-in)
Max. horsepower
5.0 HP (3.7 kW) at 3,600 rpm
Max. torque (crank PTO)
10.3 N·m (1.05 kg·m, 7.6 ft·lb) at 2,500 rpm
Carburetor
Horizontal type, butterfly valve
Cooling system
Forced-air
Ignition system
Transistorized magneto ignition
Lubricating system
Splash
Starting system
Recoil starter
Stoping system
Ignition primary circuit ground
Fuel used
Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity
2.0 l (0.53 US. Gal, 0.44 Imp. Gal.)
Fuel consumption
230 g/HPh
PTO shaft rotation
Counterclockwise (from PTO shaft side)
Dimensions and Weight
GS160
Length, mm (in)
337 (13.3)
Width, mm (in)
369 (14.5)
Height, mm (in)
343 (13.5)
Dry weight, kg (lb)
13.6 (30.0)
Cylinder Block and Head
Cylinder block
Compression ratio:
8.5:1
Bore x Stroke
64 mm X 50 mm (2.5 x 2.0 in)
Sleeve internal diameter
64.00 mm (2.52 in)
Piston skirt outer diameter
63.969 mm (2.5185 in)
Number of piston rings (compression / oil):
2 / 1
Ring side clearance
Top/second/oil
0.015-0.045 mm (0.0006-0.0018 in)
Ring end gap
Top
0.20-0.35 mm (0.008-0.014 in)
Second
0.30-0.45 mm (0.012-0.018 in)
Oil
0.15-0.35 mm (0.006-0.014 in)
Ring width
Top/second
1.5 mm (0.06 in)
Oil
2.5 mm (0.10 in)
Connecting rod small end ID
13.005 mm (0.512 in)
Connecting rod big end ID
26.02 mm (1.024 in)
Crankpin outer diameter
25.98 mm (1.023 in)
Main journal outer diameter
PTO side
27.993 mm (1.1021 in)
Flywheel side
25.393 mm (0.9997 in)
Cylinder Head
Warpage (limit)
0.10 mm (0.004 in)
Valve Arrangement:
OHС
Valves:
2
Stem outer diameter (standard):
INTAKE
5.480 mm (0.216 in)
EXHAUST
5.44 mm (0.214 in)
Guide internal diameter
INTAKE / EXHAUST
5.5 mm (0.2165 in)
Spring free length
34.0 mm (1.34 in)
Tightening torque specs
Tightening torque specs
Crankcase cover
12 Nm; 1.2 kg·m; 8.6 ft·lb
Connecting rod bolt
12 Nm; 1.2 kg·m; 8.6 ft·lb
Valve adjusting lock nut
8 Nm; 0.8 kg·m; 5.8 ft·lb
Cylinder head cover bolt
12 Nm; 1.2 kg·m; 8.6 ft·lb
Oil drain plug bolt
24 Nm; 2.4 kg·m; 17 ft·lb
Flywheel nut
75 Nm; 7.6 kg·m; 55 ft·lb
Governor arm nut
10 Nm; 1.0 kg·m; 7 ft·lb
Muffler bolt
12 Nm; 1.2 kg·m; 8.6 ft·lb
Recoil starter nut
8.5 Nm; 0.85 kg·m; 6.1 ft·lb
Fan cover stud bolt
12 Nm; 1.2 kg·m; 8.6 ft·lb
Spark plug
20 Nm; 2.0 kg·m; 14 ft·lb
Service Information
Engine
Maximum speed
3,850 ± 150 rpm
Idle speed
1,400 ± 150 rpm
Cylinder compression
5.0 kg/cm2 (71 psi) at 600 rpm
Valve clearance
Intake valve
0.15 ± 0.04 (0.006 ± 0.002)
Exhaust valve
0.20 ± 0.04 (0.008 ± 0.002)
Oil system
Oil type
Honda 4-stroke or an equivalent (SE or SF)
Recommended oil
SAE 10W-30
Oil capacity
0.58 l (0.61 US. qt, 0.55 Imp. qt.)
Ignition system
Spark plug
NGK: BPR6ES
Spark plug gap
0.7-0.8 mm (0.028-0.031 in)
Author:Sergei WersAbout: 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.
1 Comment
What is the diameter of the shaft?
what is the height of the shaft from the mounting platform?
Is is compatible replacement for a GX160?
The Honda GS160 is a small 0.16 l (160 cc, 9.8 cu.in.) single-cylinder air-cooled 4-stroke internal combustion gasoline engine with horizontal shaft, manufactured by Honda Motor Company for general-purpose applications, such as pressure washers tillers and cultivators, agricultural equipment, water pumps. 
Author:
What is the diameter of the shaft?
what is the height of the shaft from the mounting platform?
Is is compatible replacement for a GX160?