The 4.5-liter Nissan VH45DE engine reaches 278 hp. (207 kilowatts) at 6000 rpm, and 396 Nm at 4000 rpm. The cutoff is at 6900 rpm. Cylinder geometry: piston stroke – 82.7 mm, cylinder diameter – 93 mm. From 1990 to 1995, a VTC version was also produced. Features of the VH45DE engine: forged steel crankshaft and connecting rods, 6-bolt main bearing caps, lightweight pistons with molybdenum coating, outlet camshafts made of special materials, hydraulic compensators are present.
Specifications
| Manufacturer | Yokohama Plant |
| Also called | VH45 |
| Production years | 1989-2002 |
| Cylinder block alloy | aluminum |
| Fuel system | injector |
| Configuration | V |
| Number of cylinders | 8 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 82.7 |
| Cylinder bore, mm | 93 |
| Compression ratio | 10.2 |
| Displacement, cc | 4494 |
| Power output, hp | 278/6000 |
| Torque output, Nm / rpm | 396/4000 |
| Fuel type | 95 |
| Euro standards | — |
| Weight, kg | — |
| Fuel consumption, L/100 km (for Infiniti Q45) — city — highway — combined |
16.8 11.8 14.7 |
| Oil consumption, gr/1000 km | up to 1000 |
| Recommended engine oil | 5W-30 / 5W-40 / 10W-30 / 10W-40 |
| Engine oil capacity, liter | 5.6 |
| Oil change interval, km | 10000 (better 5000) |
| Normal engine operating temperature, °C | — |
| Engine lifespan, km — official information — real |
— 400+ |
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