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Nissan VQ35HR 3.5L Engine Review

VQ35HR 3.5L Engine

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 models basically. More than 80% of DE parts were redeveloped and modernized to allow the engine operates at high rpm for a long time.

Aluminum cylinder block was reinforced and made a little bit taller (by 8.4 mm). In this case, the length of connecting 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 bigger diameter and harder springs. Camshafts specs: duration 248/248, valves lift 10.54/10.54 mm. The engine got redeveloped plastic intake manifold and new sports headers. New intake system cuts air flow by 18%, while exhaust system flow increased by 25% for better ventilation of the cylinder volume.

From 2010 Nissan produced hybrid models based on the VQ35HR engine using a lithium-ion battery. Total power of this unit is 360hp.

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 (232 kW)/6800
Torque, lb ft
268 (363 Nm)/4800
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

VQ35HR Engine Problems and Reliability

Rough idle of the VQ35HR. The most common reason is the exhaust camshaft caps, check and replace them. Also, check out MAF-sensor condition.
The VQ35HR as the VQ35DE is a very reliable and strong engine. Its maximum service life is more than 250,000 miles of smooth operation.

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