| Engine Specifications | |
| Engine code | 1HZ |
| Layout | Straight-6, vertical |
| Fuel type | Diesel |
| Production | – |
| Displacement | 4.2L, 4,164 cc (254.1 cu in) |
| Injection pump | Mechanical |
| Power adder | None |
| Horsepower net | 131 PS (96 KW; 129 HP) at 3,800 rpm 135 PS (99 KW; 133 HP) at 4,000 rpm |
| Torque output | 279 Nm (28.5 kg·m; 205.9 ft·lb) at 2,200 rpm 284 Nm (29.0 kg·m; 209.6 ft·lb) at 2,200 rpm |
| Firing order | 1-4-2-6-3-5 |
| Dimensions (L x H x W): | – |
| Weight | |
CAR & TRUCK ENGINES
TOYOTA-1HZ-4.2 ENGINE
The Toyota 1HZ is a 4.20 l (4,164 cc, 254.1 cu-in) six cylinders, four-stroke cycle water-cooled naturally aspirated internal combustion diesel engine, manufactured by the Toyota Motor Corporation.
The 1HZ engine has a cast-iron cylinder block with 94.0 mm (3.7 in) cylinder bores and a 100.0 mm (3.94 in) piston stroke. Compression ratio rating was 22.7:1. In 1998, the 1HZ engine received a reinforced cylinder block and crankshaft, new pistons and glow plugs, the compression was reduced to 22.4:1. Since 2002 the engine is equipped with an EGR system.
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