Nissan Engine VQ40DE Repair Service Manual
The VQ40DE is a 4.0 L (3,954 cc) longer stroke variant of the VQ35DE. Bore and stroke are 95.5 mm × 92 mm (3.76 in × 3.62 in). Compression ratio is 9.5:1
Improvements include continuously variable valve timing, variable intake system, silent timing chain, hollow and lighter camshafts and friction reduction (micro finished surfaces, moly coated pistons). It is port fuel injected with platinum-tipped spark plugs. It produces 261 to 275 hp (195 to 205 kW; 265 to 279 PS) at 5600 rpm and 281 to 288 lb⋅ft (381 to 390 N⋅m) at 4000 rpm.
Nissan VQ40 engine specs
| Manufacturer | Decherd Powertrain Plant |
| Also called | VQ40 |
| Production | 2005-present |
| Cylinder block alloy | Aluminum |
| Configuration | V6 |
| Valvetrain | DOHC |
| 4 valves per cylinder | |
| Piston stroke, mm (inch) | 92 (3.62) |
| Cylinder bore, mm (inch) | 95.5 (3.76) |
| Compression ratio | 9.7 |
| Displacement | 3954 cc (241.3 cu in) |
| Power output | 195 kW (265 HP) at 5,600 rpm |
| 198 kW (269 HP) at 5,600 rpm | |
| Torque output | 381 Nm (281 lb·ft) at 4,000 rpm |
| 390 Nm (288 lb·ft) at 4,000 rpm | |
| Redline | – |
| HP per liter | 67 |
| 68 | |
| Fuel type | Gasoline |
| Weight, kg (lbs) | – |
| Fuel consumption, L/100 km (mpg) | for Pathfinder |
| -City | 18.7 (13) |
| -Highway | 10.5 (22) |
| -Combined | 13.5 (17) |
| Turbocharger | Naturally aspirated |
| Oil consumption , L/1000 km | up to 0.5 |
| (qt. per miles) | (1 qt. per 1200 miles) |
| Recommended engine oil | 5W-30 |
| 5W-40 | |
| 10W-30 | |
| 10W-40 | |
| Engine oil capacity, L (qt.) | 5.1 (5.4) |
| Oil change interval, km (miles) | 5,000-10,000 |
| (3,000-6,000) | |
| Normal engine operating temperature, °C (F) | – |
| Engine lifespan, km (miles) | |
| -Official information | – |
| -Real | 400,000+ (250,000) |
| Tuning, HP | |
| -Max HP | 400+ |
| -No life span loss | – |
| The engine is installed in | Nissan Pathfinder |
| Nissan Xterra | |
| Nissan Frontier | |
| Nissan NV | |
| Suzuki Equator |
