Nissan VQ37VHR 3.7L Engine Specs, Problems, and Reliability. The VQ37VHR engine was established on the base of the VQ35HR and appeared in 2007. This engine is utilized by a bulk of contemporary Infiniti models and sport Nissan automobiles. This 3.7-liter engine is the most sophisticated engine in VQ-series.
The cylinder block of this engine is taller than VQ35HR and engine has a bigger stroke while the cylinder bore is the same. There are new light pistons and connecting rods. These modifications allowed getting in outcome 3.7-liter displacement instead of 3.5 liters.
The engine got new redeveloped aluminum cylinder heads (12 valves, 2 camshafts). Engineers upgraded inside channels and set up the brand-new consumption and exhaust valves. They firstly utilized Nissan Variable Valve Event and Lift system on this engine. And likewise both camshafts were currently equipped with variable valve timing CVTC.
On top of the engine, you can see the reshaped plastic consumption manifold. The engine uses timing chain as previously. Increased torque by just 1.5 lb-ft (2 Nm), compared with VQ35HR, the optimum worth is reached at 5200 rpm versus 4800 rpm as VQ35HR. The torque curve itself was also improved.
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VQ37VHR 3.7 l engine Problems and Reliability
The engine has great reliability, however like the VQ-series engine it has some common problems, you can check out them listed below:
- High oil consumption. Catalysts of the VQ35DE are really sensitive to sustain quality. They produce ceramic dust, which harms the cylinders and piston rings. As a result, the engine has low compression, high fuel and oil usage, and other dead engine symptoms.
- Engine getting too hot. That is not a common problem, but it belongs to be. Check the radiator condition and growth tanks of the cooling system for any leaks.
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Nissan VQ37VHR 3.7L Engine Specs
| Manufacturer | Iwaki Plant |
| Production years | 2007-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 | 86.0 |
| Displacement, cc | 3696 |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 11:1 |
| Power, hp | 355 hp /7,000 |
| Torque, lb ft | 269 lb-ft (365 Nm)/5,200 |
| 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 | 5.7 |
| Oil change interval, mile | 9,000 (15,000 km) or 12 months |
| Applications | Nissan 370Z, Nissan Skyline, Infiniti QX50 (EX37), Infiniti QX70 (FX37), Infiniti Q50, Infiniti G37/Q40/Q60, Infiniti Q70 (M37), Nissan Fuga, Mitsubishi Proudia |