Nissan VQ35HR 3.5L Engine Specs, Problems, Reliability. This 3.5-liter engine is the result of the VQ-series modernization in 2006. The VQ35HR engine was installed in rear drive Nissan and Infinity designs basically. More than 80% of DE parts were redeveloped and updated to allow the engine operates at high rpm for a very long time.
Aluminum cylinder block was reinforced and made a bit taller (by 8.4 mm). In this case, the length of linking rods was increased to 152.2 mm. New lightweight aluminum pistons increased the compression ratio to 10.6:1. Both camshafts are equipped with variable valve timing system CVTC. Valves have a larger diameter and harder springs. Camshafts specifications: duration 248/248, valves lift 10.54/ 10.54 mm.
The engine got redeveloped plastic consumption manifold and new sports headers. New consumption system cuts air circulation by 18%, while exhaust system flow increased by 25% for better ventilation of the cylinder volume.
From 2010 Nissan produced hybrid designs based on the VQ35HR engine utilizing a lithium-ion battery. Total power of this unit is 360hp.
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VQ35HR Engine Problems and Reliability
- Rough idle of the VQ35HR. The most common reason is the exhaust camshaft caps, check and change them. Inspect out MAF-sensor condition.
- The VQ35HR as the VQ35DE is a strong and very reputable engine. Its maximum life span is more than 250,000 miles of smooth operation.
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Nissan VQ35HR 3.5L Engine Specs
| Manufacturer | Iwaki Plant |
| Production years | 2006-present day |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Fuel injection |
| Configuration | V |
| Number of cylinders | 6 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 95.5 |
| Stroke, mm | 81.4 |
| Displacement, cc | 3498 |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 10.6:1 |
| Power, hp | 315 hp (232 kW)/6,800 |
| Torque, lb ft | 268 lb-ft (363 Nm)/4,800 |
| Engine weight | – |
| Firing order | 1-2-3-4-5-6 |
| Engine oil weight | 5W-30, 5W-40, 10W-30, 10W-40 |
| Engine oil capacity, liter | 4.7 |
| Oil change interval, mile | 9,000 (15,000 km) or 12 months |
| Applications | Infiniti G35 Sedan, Nissan 350Z, Nissan Fuga 350 GT, Infiniti EX35 Crossover, Infiniti M35, Infiniti M35h, Nissan Fuga Hybrid, Nissan Cima, Mitsubishi Dignity, Infiniti Q50 Hybrid, Infiniti Q70 Hybrid |