Nissan VQ37 engine specifications
| Manufacturing | Iwaki Plant |
| Engine make | VQ37 |
| Years of manufacture | 2007-present |
| Cylinder Block Material | aluminum |
| Power system | injector |
| Type | V-type |
| Number of cylinders | 6 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 86 |
| Cylinder diameter, mm | 95.5 |
| Compression ratio | 11.0 |
| Engine displacement, cc | 3696 |
| Engine power, hp/rpm | 330/7000 333/7000 355/7000 |
| Torque, Nm/rpm | 361/5200 363/5200 365/5200 |
| Fuel | 95 |
| Environmental standards | Euro 4/5 |
| Engine weight, kg | – |
| Fuel consumption, l/100 km (for Q70) – city – highway – mixed. |
15.3 8.4 10.9 |
| Oil consumption, gr./1000 km | up to 500 |
| Engine oil | 0W-30 0W-40 5W-30 5W-40 10W-30 10W-40 15W-40 |
| How much oil in the engine, liters | 5.7 |
| Oil change is carried out, km | 15000 (better 7500) |
| The operating temperature of the engine, deg. | – |
| Engine life, thousand kilometers – according to the factory data – in practice |
– 400+ |
| Tuning – potential – without loss of resource |
450+ – |
| Motor installed | Infiniti G37 4 (V36) 2007 – 2015 Infiniti Q40 1 (V36) 2014 – 2015 Infiniti Q50 1 (V37) 2013 – 2015 Infiniti Q60 1 (CV36) 2013 – 2015 Infiniti M37 4 (Y51) 2009 – 2013 Infiniti Q70 1 (Y51) 2013 – 2019 Infiniti EX37 1 (J50) 2008 – 2013 Infiniti QX50 1 (J50) 2013 – 2017 Infiniti FX37 2 (S51) 2008 – 2013 Infiniti QX70 1 (S51) 2013 – 2017 Nissan 370Z Nissan Skyline Nissan Fuga Mitsubishi Proudia |
Reviews on the VQ37 VHR engine its pros and cons
Disadvantages:
- High power for an atmospheric
- There are a lot of tuning kits
- No major reliability issues
- There is a choice of aftermarket donors
Disadvantages:
- Rather decent fuel consumption
- Catalysts are afraid of left-handed gasoline
- Oil consumption is very common
- Hydrocompensators are not provided
Nissan VQ37VHR 3.7 l engine maintenance schedule
Oil service
Frequency: every 10,000 km
Volume of lubricant in the engine: 5.4 liters
Need for replacement: about 4.9 liters
What kind of oil: 5W-30, 5W-40
Gas distribution mechanism
Timing gear type: chain drive
Declared life: not limited
In practice: 200 – 250 thousand km
At breakage/skipping: bends valves
Valve thermal clearances
Adjustment: once every 100,000 km
Adjustment principle: selection of tappets
Inlet clearances: 0.26 – 0.34 mm
Exhaust clearances: 0.29 – 0.37 mm
Consumables replacement
Air filter: 30 thousand km
Fuel filter: no
Tank filter: 100 thousand km
Spark plugs: 30 thousand km
Auxiliary belt: 120 thousand km
Coolant: 5 years or 90 thousand km
Infiniti VQ37VHR (Nissan)
Engine Troubleshooting and Repair
In 2007, mainly for Infiniti cars, the most advanced engine from the VQ series was introduced, designated as VQ37VHR. This unit replaced the VQ35HR and was developed based on it. The VQ35HR’s cylinder block grew slightly in height, and its rigidity was increased. A crankshaft with a stroke of 86 mm, long connecting rods, lightweight pistons with a compression ratio of 11. This made it possible to increase the displacement from 3.5 liters to 3.7 liters.
From above, two revised cylinder heads were installed, equipped with a system of continuous variable valve timing on the intake/exhaust camshafts and changing the height of intake valve lift (VVEL). The valves have been modified and reinforced springs have been installed. The intake and exhaust ducts have also been modified, and a new intake system and equal-length exhaust manifolds have been installed.
The timing is chain driven, the reliability of the chain is at a decent level.
Together with VQ37VHR, the VQ series included other engines: VQ40DE, VQ35, VQ30, VQ25, VQ23, VQ20.
This motor also has some distant kinship with the powerful GTR’s VR38DETT.
Disadvantages, breakdowns and problems of the VQ37VHR engine
Oil consumption
The main mass of complaints on forums is connected with oil consumption and there are several reasons for it: firstly, it is a natural wear of the unit due to excessively aggressive operation, secondly, catalytic converters here are afraid of bad fuel and are destroyed rather quickly, and their crumbs are drawn into the combustion chambers, where they scratch the walls and form scoring.
Lubricant leaks
Another known problem is the oil channel gaskets under the front cover. Until 2012, they were made of paper, which often squeezed out by 100,000 km. All this is fraught with leaks, loss of lubrication pressure in the unit and rotated liners.
Rare problems
During active driving, this motor gets very warm and it is important to keep an eye on the cooling system. And not only periodically wash radiators, but also change the expansion tank cap. There are no hydrocompensators here and therefore do not forget about the adjustment of valve clearances.
The manufacturer declares the resource of the engine at 250 000 km, but it can pass and more.
Tuning the engine Infiniti VQ37VHR
Atmospheric
The easiest option to increase power without supercharging is to buy a cold intake, spiders and a 63mm pipe sport exhaust (full) and do chip tuning. This will give about 360hp and greatly improve the sound. Buying intake manifold Z1 or the whole kit (intake + exhaust + Uprev software), you can remove about 390 hp. This is a reasonable upper limit, further you need to change the intake manifold, put camshafts, refine the fuel system, and the gain will not be so significant (about 420 hp).
VQ37VHR Compressor
A lot of power can be removed by buying a compressor kit for the VQ37, for example from Stillen, based on the Vortech V3. Such kits will blow 0.5 bar into a stock piston, and that’s enough to get under 500 hp at the flywheel. At 0.8 bar you’ll get about 550 hp. You can get about the same amount of power (and more) with a twin turbo kit from Greddy based on two TD06-20Gs. Stock pistons can handle about 500 (sometimes 550hp) at the wheels, further it is better to buy forged pistons under low compression ratio and connecting rods. The big downside of all this is the price of a supercharged VQ37, it is quite high (half the cost of the car), it may be cheaper to buy a faster car.
ENGINE RATING: 5-