The Honda GCV160 is an 160 cc (9.8 cu-in) single-cylinder, air-cooled, four-stroke, internal combustion gasoline engine with vertical shaft, manufactured by Honda Motor Company since 1997 for general-purpose applications such as: pressure washers, lawn mowers, agricultural equipment, forestry equipment.
This engine has a single-cylinder, compact combustion chamber, tough resin overhead cam for durability and quietness and uniblock construction reduce fuel consumption. The Honda GCV160 engine has transistorized magneto ignition, horizontal type carburetor, and recoil starter.
Cylinder bore and piston stroke are 64.0 mm (2.5 in) and 50.0 mm (2.0 in), respectively. The compression ratio rating is 8.5:1.
The GCV160 engine produces 4.5 PS (3.3 KW; 4.4 HP) at 3,600 rpm of max output power and 9.4 Nm (0.96 kg·m; 6.94 lbf·ft) at 2,500 rpm of peak torque .
General information
| Engine Specifications | |
| Model | GCV160 (vertical shaft) |
| Type | 4-stroke, OHC, single cylinder |
| Displacement | 160 cm 3 (9.8 cu-in) |
| Max. horsepower | 4.5 PS (3.3 KW; 4.4 HP) at 3,600 rpm |
| Max. torque (crank PTO) | 9.4 Nm (0.96 kg·m; 6.94 lbf·ft) 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 | 1.1 liters (1.16 US.qts, 0.97 Imp. qts) |
| Fuel consumption | 230 g/HPh |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
| N1 | N2 | N3 | N4 | |
| Length, mm (in) | 367 (14.4) | |||
| Width, mm (in) | 331 (13.0) | |||
| Height, mm (in) | 360 (14.2) | 347 (13.7) | 365 (14.3) | 347 (13.7) |
| Dry weight, kg (lb) | 9.8 (21.6) | |||
| Operating weight, kg (lb) |
11.1 (24.5) | |||
Cylinder Block and Head
| Cylinder block | ||
| Compression ratio: | 8.5:1 | |
| Bore x Stroke | 64.0 mm X 50.0 mm (2.5 x 2.0 in) | |
| Sleeve internal diameter | 64.00 mm (2.52 in) | |
| Piston skirt outer diameter | 64.00 mm (2.52 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Piston ring side clearance (Top): | 0.015-0.045 mm (0.0006-0.0018 in) | |
| Piston ring side clearance (Second): | 0.015-0.045 mm (0.0006-0.0018 in) | |
| Piston ring side clearance (Oil): | 0.015-0.045 mm (0.0006-0.0018 in) | |
| Piston ring end gap (Top): | 0.200-0.350 mm (0.008-0.014 in) | |
| Piston ring end gap (Second): | 0.300-0.450 mm (0.012-0.018 in) | |
| Piston ring end gap (Oil): | 0.150-0.350 mm (0.006-0.014 in) | |
| Ring width (Top): | 1.5 mm (0.06 in) | |
| Ring width (Second): | 1.5 mm (0.06 in) | |
| Ring width (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: | OHC | |
| Valves: | 2 | |
| Valve stem outer diameter (INTAKE): | 5.480 mm (0.216 in) | |
| Valve stem outer diameter (EXHAUST): | 5.440 mm (0.214 in) | |
| Valve guide inner diameter (INTAKE): | 5.500 mm (0.2165 in) | |
| Valve guide inner diameter (EXHAUST): | 5.500 mm (0.2165 in) | |
| Spring free length | 34.0 mm (1.34 in) | |
Tightening torque specs
| Tightening torque specs | |
| Air cleaner case bolt | 10 Nm; 1.0 kg·m; 7 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 | 52 Nm; 5.3 kg·m; 38 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 |
| Others | |
| 5 mm bolts, nuts | 5.5 Nm; 0.55 kg·m; 4.0 ft·lb |
| 6 mm bolts, nuts | 10 Nm; 1.0 kg·m; 7 ft·lb |
| 8 mm bolts, nuts | 24 Nm; 2.4 kg·m; 17 ft·lb |
| 10 mm bolts, nuts | 37 Nm; 3.7 kg·m; 27 ft·lb |
| 12 mm bolts, nuts | 55 Nm; 5.5 kg·m; 39.5 ft·lb |
Service Information
| Engine | |
| Maximum speed | 3,000 ± 150 rpm |
| Idle speed | 1,700 ± 150 rpm |
| Cylinder compression | 5.0 kg/cm2 (71 psi) at 600 rpm |
| Valve clearance | |
| Intake valve | 0.15 ± 0.04 mm (0.006 ± 0.002 in) |
| Exhaust valve | 0.20 ± 0.04 mm (0.008 ± 0.002 in) |
| Oil system | |
| Oil type | Honda 4-stroke or an equivalent (SE or SF) |
| Recommended oil | SAE 10W-30 |
| Oil capacity | 0.55 liters (0.58 US.qts, 0.48 Imp. qts) |
| Ignition system | |
| Ignition timing | 20° B.T.D.C. |
| Spark plug | NGK: BPR6ES |
| Spark plug gap | 0.7-0.8 mm (0.028-0.031 in) |
| Spark plug tightening torque | 20 Nm; 2.0 kg·m; 14 ft·lb |
| Primary ignition coil resistance | 1.0-1.2 Ω |
| Secondary ignition coil resistance | 10.6-12.8 kΩ |
| Ignition coil air gap | 0.2-0.6 mm (0.008-0.024 in) |
| Carburetor | |
| Main jet | #65 |
| Float height | 9.2 mm (0.36 in) |
| Pilot screw opening | 1 turns out |
Author:
What is the oil weight and capacity for the pump mechanism?
Just a heads up. Specs from Honda State horse power is 4.4 at 3600 RPM not 5.4
From the owners manual: Net power (in accordance with SAE J1349) – 4.4 hp (3.3 kW) at 3,600 rpm
do you know if the GVC 160-G5MF and the GCV 160-LA0N5B have the same base configuration?
Automatic carburetor or chokes sucks. I bought 2 mowers with this honda engine thinking honda was top of the line. Run mower for 5 minutes. Stop to pick something up and the mower runs terrible until it sits and cools down half hour or so. Not at all efficient to get the job done
I had mine for over 6 years trouble free am shure its something very minor
Why does this site list a compression ratio of 8.5:1 in the cylinder block and head section, but then list compression as 71 psi in the service section?
Because the compression ratio and cylinder compression pressure are two different indicators.
Ref the spark plug BPR6ES. Note the following (from the Honda Owners Manual GCV160)……
BPR6ES (NGK) (pressure washer applications ONLY)
BPR5ES (NGK (all other applications)
My Lawnmower came with the NGK BPR6ES. Probably 10 years old or so.
GCV160 GJAEA-1290311 / Does anyone know the PTO bearing (oil pan) STD and Reject specification? I need to figure out if the oil plan bearing is still in spec after a bent crankshaft. Waiting on Honda Service Manual for the GCV160.
someone pls tell me the magneto gap i need it for class
Business card
0.2-0.6 mm (0.008-0.024 in)
Or just use a business card. Most technicians do.
Is there any way you could send me a picture of the muffler please