Honda GX160T2

Honda GX160 T2/UT2 The Honda GX160 T1 is a 163 cc (9.9 cu-in) single-cylinder inclined by 25° air-cooled 4-stroke internal combustion small gasoline engine with horizontal shaft manufactured by Honda Motor Company for general-purpose applications, such as commercial lawn and garden equipment, tillers and cultivators, generators, construction and industrial equipment, agricultural equipment and water pumps.

The Honda GX160 T2/UT2 engine has an OHV (overhead valve) design; high compression ratio for better fuel efficiency; horizontal type carburetor with butterfly valve; mechanical centrifugal governor; forced splash lubrication system; heavy-duty recoil or recoil and electric starter and C.D.I. (Capacitor Discharge Ignition) type magneto ignition. The engine can be equipped with the dual-type, dual silent type, semi-dry type, oil bath type or a cyclone-type air cleaner.

The cylinder bore is 68.0 mm (2.7 in) and the piston stroke is 48.0 mm (1.8 in), compression ratio rating is 9.0:1. The engine produced 4.9 HP (3.6 kW) at 3,600 rpm of maximum horsepower and 3.9 HP (2.9 kW) at 3,600 rpm of continuous rated power. Maximum torque is 10.3 N·m (1.1 kg·m, 7.6 ft·lb) at 2,500 rpm.

General information

Engine Specifications
Model GX160 T2 / UT2
Type 4-stroke, OHV, single cylinder inclined by 25°
Displacement 163 cm 3 (9.9 cu-in)
Max. horsepower 4.9 HP (3.6 kW) at 3,600 rpm
Max. torque (crank PTO) 10.3 N·m (1.1 kg·m, 7.6 ft·lb) at 2,500 rpm
Carburetor Horizontal type, butterfly valve
Cooling system Forced-air
Ignition system C.D.I. (Capacitor Discharge Ignition)
Lubricating system Forced splash
Starting system Recoil oa Recoil and Starter motor
Stoping system Ignition primary circuit ground
Fuel used Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity 3.1 L (0.82 US Gal, 0.68 Imp Gal.)
PTO shaft rotation Counterclockwise (from PTO shaft side)

Cylinder Block and Head

The Honda GX120T2 has cast iron cylinder sleeve, ball bearing supported forged steel crankshaft, improved piston design. The piston has two compression rings and one oil ring. Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficiency. Cylinder bore and piston stroke are 68.0 mm (2.7 in) and 48.0 mm (1.8 in), respectively. Compression ratio rating is 9.0:1

Cylinder block
Compression ratio: 9.0:1
Bore x Stroke 68 X 45 mm (2.7 x 1.8 in)
Sleeve internal diameter 68.00 mm (2.68 in)
Piston skirt outer diameter 67.985 mm (2.6766 in)
Number of piston rings (compression / oil): 2 / 1
Ring side clearance Top 0.060-0.095 mm (0.0024-0.0037 in)
Second 0.045-0.080 mm (0.0018-0.0032 in)
Ring end gap Top 0.20-0.35 mm (0.0079-0.0138 in)
Second 0.35-0.50 mm (0.0138-0.0197 in)
Oil (side rail) 0.10-0.35 mm (0.004-0.014 in)
Ring width Top 0.925-0.945 mm (0.0364-0.0372 in)
Second 0.940-0.960 mm (0.0370-0.0378 in)
Connecting rod small end ID 18.005 mm (0.7087 in)
Connecting rod big end ID 30.02 mm (1.182 in)
Piston pin outer diameter 13.0 mm (0.51 in)
Crankshaft crank pin outer diameter 29.98 mm (1.180 in)
Cylinder Head
Warpage (limit) 0.10 mm (0.004 in)
Valve Arrangement: OHV
Valves: 2
Stem outer diameter (standard): INTAKE 5.468-5.480 mm (0.2153-0.2157 in)
EXHAUST 5.425-5.440 mm (0.2136-0.2142 in)
Valve spring free length: 30.5 mm (1.20 in)
Camshaft outer diameter: 13.984 mm (0.5506 in)
Cam height: INTAKE 27.503-27.903 mm (1.0828-1.0985 in)
EXHAUST 27.503-27.903 mm (1.0828-1.0985 in)

Tightening torque specs

Tightening torque specs
Connecting rod bolt 10 Nm; 1.0 kg·m; 7 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
Rocker arm pivot adjusting nut 10 Nm; 1.0 kg·m; 7 ft·lb
Rocker arm pivot bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Crankcase cover bolt 24 Nm; 2.4 kg·m; 17 ft·lb
Oil level switch joint nut 10 Nm; 1.0 kg·m; 7 ft·lb

Service Information

Maximum speed 3,900 ± 100 rpm
Idle speed 1,400 ± 150 rpm
Cylinder compression 5.0-7.0 kg/cm2 (71-100 psi) at 600 rpm
Valve clearance
Intake valve clearance 0.08±0.02 mm (0.003±0.001 in)
Exhaust valve clearance 0.10±0.02 mm (0.004±0.001 in)
Oil system
Oil type Honda 4-stroke or an equivalent (SJ or higher)
Recommended oil SAE 10W-30, 10W-40
Oil capacity 0.58 L (0.61 US. qt, 0.51 Imp. qt.)
Main jet BE54C, BE54P: #70
BE54D, BE66U, BE54J: #68
Float height 13.7 mm (0.54 in)
Pilot screw opening BE54C: 2-1/4 turns out
BE54P: 2-1/2 turns out
BE54D, BE66U, BE54J: 1-7/8 turns out
Ignition system
Ignition timing 18° B.T.D.C. (Fixed)
Spark plug NGK: BPR6ES
Spark plug gap 0.7-0.8 mm (0.028-0.031 in)
Primary ignition coil resistance 0.6-0.9 Ω
Secondary ignition coil resistance 5.6-6.9 kΩ
Ignition coil air gap 0.4 ± 0.2 (0.016 ± 0.008)
Starter motor
Brush length 11.0 mm (0.43 in)
Mica depth 1.6 mm (0.06 in)
ATTENTION! Dear visitors, this site is not a trading platform, an official dealer or a spare parts supplier, so we do not have any price lists or spare parts catalogs. We are an information portal and provide the technical specifications of gasoline and diesel engines.

We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.

1 Comment

Leave a Reply

Your email address will not be published.