The Honda GD411 is a (411 cc, 25.2 cu-in) single-cylinder air-cooled 4-stroke internal combustion diesel engine with horizontal shaft, manufactured by Honda Motor Company for general-purpose applications.
This engine has a single-cylinder; overhead valves and direct injection combustion system. The motor used Zexel PFRIKX fuel injection pump and Zexel DLLA-P injection nozzle. The GD411 engine could be equipped with recoil starter and starter motor, or recoil starter only.
The GD411 has an 82.0 mm (3.23 in) cylinder bore and 78.0 mm (3.07 in) piston stroke. The compression ratio is 19.4:1 for B type engine, 20:1 for North America type and 18.2:1 for other engines. It produced 6.6 kW (9.0 HP) of maximum output and 20.6 N·m (2.1 kg·m, 15.19 ft·lb) at 2,500 rpm of torque.
General information
| Engine Specifications | |
| Model | GD411 |
| Type | 4-stroke, OHV, single cylinder |
| Displacement | 411 cm 3 (25.2 cu-in) |
| Max. horsepower |
S,Q,V,P,E type: 9.0 HP (6.6 kW) at 3,600 rpm B type: 7.5 HP (5.5 kW) at 3,000 rpm L type: 8.7 HP (6.4 kW) at 1,800 rpm |
| Max. torque (crank PTO) |
S,Q,V,P,E type: 20.6 N·m (2.1 kg·m, 15.19 ft·lb) at 2,500 rpm B type: 19.6 N·m (2.0 kg·m, 14.5 ft·lb) at 1,800 rpm L type: 40.2 N·m (4.1 kg·m, 30 ft·lb) at 1,250 rpm |
| Cooling system | Forced-air |
| Lubricating system | Forced spray |
| Starting system | Recoil starter or starter motor |
| Stoping system | Fuel cut with speed control lower (Stop lever) |
| Fuel used | Diesel fuel |
| Fuel tank capacity | 4.6 l (1.21 US. Gal, 1.2 Imp. Gal.) |
| Fuel consumption | 180-190 g/HPh |
| PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Cylinder Block and Head
| Cylinder block | ||
| Compression ratio: | 18.2:1, 19.4:1, 20:1 | |
| Bore x Stroke | 82 mm X 78 mm (3.23 x 3.07 in) | |
| Sleeve internal diameter | 82.000-82.017 mm (3.2283-3.2290 in) | |
| Piston skirt outer diameter | 81.940-81.960 mm (2.2260-2.2268 in) | |
| Number of piston rings (compression / oil): | 2 / 1 | |
| Ring side clearance | Top | 0.085-0.115 mm (0.0033-0.0045 in) |
| Second | 0.075-0.110 mm (0.0030-0.0043 in) | |
| Oil | 0.020-0.055 mm (0.0008-0.0022 in) | |
| Ring end gap | Top | 0.25-0.40 mm (0.010-0.016 in) |
| Second | 0.25-0.40 mm (0.010-0.016 in) | |
| Oil | 0.20-0.40 mm (0.008-0.016 in) | |
| Ring width | Top | 1.970-1.965 mm (0.0776-0.0774 in) |
| Second | 1.970-1.950 mm (0.0776-0.0768 in) | |
| Oil | 3.990-3.970 mm (0.1571-0.01563 in) | |
| Connecting rod small end ID | 23.010-23.028 mm (0.9060-0.9066 in) | |
| Connecting rod big end ID | 46.000-46.024 mm (1.8110-1.8120 in) | |
| Crankpin outer diameter | 42.976-43.000 mm (1.920-1.6929 in) | |
| Main journal outer diameter | 49.970-49.994 mm (1.9673-1.9683 in) | |
| Cylinder Head | ||
| Distortion of cylinder head | 0.05 mm (0.002 in) | |
| Valve Arrangement: | OHV | |
| Valves: | 2 | |
| Stem outer diameter (standard): | INTAKE | 6.590-6.575 mm (0.2594-0.2589 in) |
| EXHAUST | 6.550-6.540 mm (0.2579-0.2575 in) | |
| Guide internal diameter | INTAKE / EXHAUST | 6.600-6.615 mm (0.2598-0.2604 in) |
| Spring free length | 33.7 mm (1.33 in) | |
| Cam lobe height | INTAKE / EXHAUST | 41.022 mm (1.6150 in) |
| Valve rocker arm internal diameter | INTAKE / EXHAUST | 16.000-16.018 mm (0.6300-0.6306 in) |
| Rocker arm shaft outer diameter | INTAKE / EXHAUST | 15.984-15.966 mm (0.6293-0.6286 in) |
Tightening torque specs
| Tightening torque specs | |
| Cylinder head bolts | 43 Nm; 4.3 kg·m; 31 ft·lb |
| Cylinder head nuts | 11 Nm; 1.1 kg·m; 8 ft·lb |
| Rocker arm shaft nuts | 11 Nm; 1.1 kg·m; 8 ft·lb |
| Tappet adjusting nuts | 9 Nm; 0.9 kg·m; 6.5 ft·lb |
| Oil pan bolt bolts |
M11: 71 Nm; 7.1 kg·m; 51 ft·lb M8: 22 Nm; 2.2 kg·m; 16 ft·lb |
| Connecting rod cap nuts | 32 Nm; 3.2 kg·m; 23 ft·lb |
| Relief valve | 33 Nm; 3.3 kg·m; 24 ft·lb |
| Drain plug bolt | 33 Nm; 3.3 kg·m; 24 ft·lb |
| Flywheel nut | 250 Nm; 25.0 kg·m; 180 ft·lb |
| Injection nozzle | 10 Nm; 1.0 kg·m; 7 ft·lb |
| Air breather joint nuts | 18 Nm; 1.8 kg·m; 13 ft·lb |
| Fuel injection pump bolts | 22 Nm; 2.2 kg·m; 16 ft·lb |
| Fuel joint bolts | 28 Nm; 2.8 kg·m; 20 ft·lb |
| Air breather bolt | 18 Nm; 1.8 kg·m; 13 ft·lb |
| Fuel pipe nuts | 20 Nm; 2.0 kg·m; 14 ft·lb |
| Muffler nuts, bolts | 22 Nm; 2.2 kg·m; 16 ft·lb |
| Fuel tank bolts | 11 Nm; 1.1 kg·m; 18 ft·lb |
| Fuel filter bolts | 11 Nm; 1.1 kg·m; 18 ft·lb |
| Drain bolt | 11 Nm; 1.1 kg·m; 18 ft·lb |
| Others | |
| 5 mm bolts, nuts | 5.0 Nm; 0.50 kg·m; 4.0 ft·lb |
| 6 mm bolts, nuts | 10 Nm; 1.0 kg·m; 7 ft·lb |
| 8 mm bolts, nuts | 21 Nm; 2.1 kg·m; 15 ft·lb |
| 10 mm bolts, nuts | 35 Nm; 3.5 kg·m; 25 ft·lb |
| 12 mm bolts, nuts | 60 Nm; 6.0 kg·m; 44 ft·lb |
Service Information
| Engine | |
| Maximum speed | 3,750 ± 150 rpm |
| Idle speed | 1,400 ± 150 rpm |
| Cylinder compression | 26.0 kg/cm2 (370 psi) at 300 rpm |
| Valve clearance | |
| Intake valve | 0.15 ± 0.02 (0.006 ± 0.00078) |
| Exhaust valve | 0.15 ± 0.02 (0.006 ± 0.00078) |
| Oil system | |
| Oil type | Diesel oil (API Service Classification CC or CD) |
| Recommended oil | SAE 10W-30 |
| Oil capacity | 1.25 l (1.32 US. qt, 1.10 Imp. qt.) |
| Oil pressure | 3.9-5.2 kg/cm2 (55.5-74.0 psi) at 3,600 rpm |
| Generator | |
| Resistance | 2.0 ±0.5 Ω |
| Starter motor | |
| Brush length | 14.3-14.7 mm (0.56-0.58 in) |
| Mica depth | 0.4-0.8 mm (0.016-0.031 in) |
Author:
chasing a set (of 4) engine mounts for a Generator, Compressor,Welder, that has this engine. Can you supply?
Details are:Honda 9.0 (Diesel) GD410 – 411cm3
x163093745 E000026
2-Stage DI
5kVA Generator
Hello I have 4 410/411 engines two turn over but won’t fire,but they do fire on easy start
The diesel is getting to the injector so I can only think it’s injector
Any ideas or do you know anyone that might know more
Thank you