Nissan VQ35HR

Nissan VQ35HR engineThe Nissan VQ35HR is a 3.5 l (3,498 cc, 213.45 natural aspirated V6 60° 4-stroke gasoline engine from Nissan VQ-family. The engine is producted on Nissan’s Iwaki Plant in Fukushima Prefecture. The VQ35HR engine was honored by Ward’s 10 Best Engines list in 2007.

The VQ35HR engine is a re-engineered version of earlier VQ35DE engine. The VQ35HR features a lightweight aluminum block with a fully balanced four-bearings crankshaft and two aluminum heads with two camshafts (DOHC) and four valves per cylinder. The Nissan VQ35HR engine is equipped with CVTC system on intake valves, e-VTC on exhaust valves and NDIS (Nissan Direct Ignition System) with individual coils on each spark plug. The redline is 7,500 rpm.

Compression ratio rating is 10.6:1. Cylinder bore and piston stroke is 95.5 mm (3.76 in) and 81.4 mm (3.20 in), respectively. It produces from 297 HP (221 kW) at 6,800 rpm on a version of Infiniti EX37 up to 313 HP (232 kW) at 6.800 rpm. On some hybrid vehicle models this engine produces up to 360 HP (268 kW), but only in combined with an electric motor. The maximum torque is 358 Nm (36.50 kg·m, 264.0 lb·ft) at 4,800 rpm.

The breakdown of the engine code is as follows:

  • VQ – Engine Family
  • 35 – 3.5 Liter Displacement
  • HR – High Response and High Revolution

General information

Engine Specifications
Engine codeVQ35HR
LayoutFour stroke, V6
Fuel typeGasoline (petrol)
Displacement3.5 L, 3,498 cc (213.45 cu in)
Fuel systemDirect Injection
Power adderNone
Power output 297 HP (221 kW, 300 PS) at 6,500 rpm
302 HP (225 kW, 306 PS) at 6,800 rpm
306 HP (228 kW, 310 PS) at 6,800 rpm
311 HP (232 kW, 315 PS) at 6,800 rpm
Torque output 343 Nm (34.9 kg·m, 252.9 lb·ft) at 4,800 rpm
350 Nm (35.7 kg·m, 258.1 lb·ft) at 5,000 rpm
355 Nm (36.2 kg·m, 216.8 lb·ft) at 4,800 rpm
358 Nm (36.5 kg·m, 264.0 lb·ft) at 4,800 rpm
Firing order1-2-3-4-5-6
Dimensions (L x W x H):

Cylinder block

The VQ35HR has an aluminum block with a four-bearings crankshaft supported system. The VQ35HR engine employs a stiff ladder frame to support the crankshaft.

To support higher engine speeds, Nissan applied a friction-reducing solution: lengthening the connecting rods. Raising the cylinder block deck height permits a 7.6 mm (0.3 in) increase in connecting rod length. The new VQ engine uses asymmetrical piston skirts to reduce friction. The connecting rod bolt diameter has been increased from 8 mm (0.31) to 9 mm (0.35 in) to gain about 25% in strength.

During high-rev operation, the crankshaft may flex and twist, causing noise, vibration and, potentially, damage to the journals. To deal with this issue, the new VQ35 engine uses a larger journal diameter and a stiffer crankshaft. The crankshaft journal diameter has been increased from 60 mm (2.36 in) on DE-engine to 65 mm (2.55 in) on HR-version, the crankpin diameter has also been increased from 52 mm (2.04 in) to 54 mm (2.12), respectively.

The cylinder bore is 95.5 mm (3.760 in), piston stroke is 81.4 (3.205 in) mm and compression ratio rating is 10.6:1. The Nissan VQ35HR motor has two compression and one oil control rings. The connecting rod’s length is 144 mm (5.66 in)

Cylinder block
Cylinder block alloyAluminium
Compression ratio:10.6:1
Cylinder bore:95.5 mm (3.760 in)
Piston stroke:81.4 mm (3.205 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:4
Cylinder inner diameter (standard):95.500-95.510 mm (3.7598-3.7602 in)
Piston skirt diameter (standard):95.480-95.490 mm (3.7590-3.7594 in)
Piston pin outer diameter:21.989-21.995 mm (0.8657-0.8659 in)
Piston ring side clearance:Top0.040-0.080 mm (0.0016-0.0031 in)
Second0.030-0.070 mm (0.0012-0.0028 in)
Oil0.055-0.155 mm (0.0022-0.0061 in)
Piston ring end gap:Top0.23-0.33 mm (0.0091-0.0130 in)
Second0.23-0.33 mm (0.0091-0.0130 in)
Oil0.17-0.47 mm (0.0067-0.0185 in)
Connecting rod bushing inner diameter:22.000-22.006 mm (0.8661-0.8664 in)
Connecting rod big end diameter:57.000 mm (2.2441 in)
Connecting rod center distance:144.15-144.25 mm (5.68-5.68 in)
Crankshaft main journal diameter:64.975 mm (2.5581 in)
Crankpin diameter:53.974 mm (2.1250 in)
Crankshaft center distance:40.66-40.74 mm (1.6008-1.6039 in)

Cylinder head

The cylinder head is made of strong, light aluminum alloy which gives it good cooling efficiency. The engine is equipped with hydraulically actuated CVTC (Continuous Variable Valve Timing Control) for intake cams and electromagnetic Valve Timing Control (e-VTC) on the exhaust side.

The camshafts are driven by single primary and two secondary chains. The primary timing chain transmits the rotational movement from the crankshaft to the intake camshafts, the secondary chains connects intake and exhaust sprocket on each head respectively.

The intake valve diameter decreased from 37.0 mm (1.45 in) on DE-version to 36.6 mm (1.44 in) on HR-engine and the exhaust valve diameter decreased from 31.2 mm (1.22 in) to 30.2 mm (1.18 in), respectively. The VQ35HR motor does not have hydraulic lifters, so special valve lifters are used to adjust the valve clearance.

To reduce air intake resistance, the new VQ engine adopts asymmetrical twin intake configuration. To support high-rev, high-power engine performance, the VQ35HR engine adopts a straight intake port design.

Cylinder head
Block head alloyAluminium
Valve Arrangement:DOHC, chain drive
Cylinder head height:126.3-126.5 mm (4.97-4.98 in)
Valves:24 (4 valves per cylinder)
Intake valve timing
(Intake valve timing control-OFF):
Exhaust valve timing:248°
Valve head diameter:INTAKE36.6-36.9 mm (1.441-1.453 in)
EXHAUST30.2-30.5 mm (1.189-1.201 in)
Valve length:INTAKE97.13 mm (3.8240 in)
EXHAUST94.67 mm (3.7272 in)
Valve stem diameter:INTAKE5.965-5.980 mm (0.2348-0.2354 in)
EXHAUST5.962-5.970 mm (0.2347-0.2350 in)
Valve spring free length:INTAKE43.85 mm (1.7264 in)
EXHAUST43.85 mm (1.7264 in)
Camshaft cam height:INTAKE45.865-46.055 mm (1.8057-1.8132 in)
EXHAUST45.875-46.065 mm (1.8061-1.8136 in)
Exhaust camshaft journal diameter:№125.935-25.955 mm (1.0211-1.0218 in)
№2, 3, 4, 523.445-23.465 mm (0.9230-0.9238 in)

Head tightening procedure and torque specs:

  • Step 1: 105 Nm; 11.0 kg·m; 77 ft·lb
  • Step 2: Loosen all bolts completely
  • Step 3: 40.0 kg·m; 4.1 kg·m; 30 ft·lb
  • Step 4: Turn all bolts 95°
  • Step 5: Turn all bolts another 95°

Camshaft sprocket bolts

  • 103 Nm; 11.0 kg·m; 76 ft·lb

Problems and malfunctions

The Nissan VQ35HR is reliable and durable, but sometimes the following problem can happen:

  • High oil consumption. The VQ37VHR has a catalytic converter and they are very sensitive to the fuel quality. They produce ceramic dust, which damaging the cylinders sleeve and piston rings. As a result, the engine has low compression, high fuel, and oil consumption. Such an engine requires repair or replacement.

    To prevent this problem, you need to change the upper catalytic converters for high flow catalytic converter. It will decrease ecological standard, but this problem will not happen.

The engine has three timing chains, their service life is about 150,000 miles of mileage (200,000-250,000 km). The valve clearance needs to be adjusted every 60,000 miles of mileage (90,000 km). The Nissan VQ35HR motor life expectancy is 200,000 miles of mileage (300,000 km) or more.

Maintenance data

Valve clearance (HOT)
Intake valve0.304-0.416 mm (0.012-0.016 in)
Exhaust valve0.308-0.432 mm (0.012-0.017 in)
Compression pressure
Standard13.0 kg/cm2 (185 psi) / 300 rpm
Minimun10.0 kg/cm2 (142 psi) / 300 rpm
Compression differential limit between cylinders1.0 kg/cm2 (15 psi) / 300 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oil 5W-30
Oil type API
Engine oil capacity (Refill capacity) With filter change 4.9 l (5-1/8 US. qt., 4-3/8 Imp. qt.)
Without filter change 4.6 l (4-7/8 Us. qt., 4 Imp. qt.)
Oil change interval, km (miles)5,000-10,000 (3,000-6,000)
Oil Pressure, kPa (kg/cm 2, psi) Idle speed: More than 98 (1.0, 14)
2,000 rpm: More than 294 (3.0, 43)
Ignition system
Spark plugDENSO: FXE24HR11
Spark plug gap1.1 mm (0.043 in)

Valve clearance adjustment data

Calculate the thickness of new adjusting valve lifter so valve clearance comes within specified values.

R = Thickness of removed valve lifter
N = Thickness of new valve lifter
M = Measured valve clearance

N = R + [M – 0.30 mm (0.012 in)]
N = R + [M – 0.34 mm (0.013 in)]

Valve lifters are available in 27 sizes to range from 7.88 mm (0.3102 in) to 8.40 mm (0.3307 in), in steps of 0.02 mm (0.0008 in).

Example (exhaust valve):
R = 7.90 mm
M = 0.52 mm
N = 7.90 + (0.52 – 0.34) = 8.08 mm, so we need a valve lifter with identification mark 808P.

Intake0.26-0.34 mm (0.010-0.013 in)0.304-0.416 mm (0.012-0.016 in)
Exhaust0.29-0.37 mm (0.011-0.015 in)0.308-0.432 mm (0.012-0.017 in)

Vehicle applications

ModelYears Produced
Infiniti G35 Sedan2007–2008
Nissan Skyline V36 350GT Sedan2007–2008
Nissan 350Z2007–2008
Nissan Fuga 350 GT2006–2008
Infiniti EX352008–2012
Infiniti FX352009–2012
Infiniti M352009–2010
Infiniti M35h2011–2013
Infiniti M35h2011–2013
Infiniti M35h2011–2013
Nissan Fuga Hybrid2010–
Nissan Cima2012–
Mitsubishi Dignity2012–
Infiniti Q50 Hybrid2014–
Infiniti Q70 Hybrid2014–
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.


  1. Amazing details. Great work and easy to understand. I wonder about re-powering a MX5 Miata with a lightweight longatudinal oriented alloy block V-6. Only thing missing is the weight of the powerplant. Other than that , many thanks, Rick Bruck

  2. Good info.
    Although the rod length is incorrect.
    VQ35HR rods are longer than VQ37VHR rods which are 149.2mm
    HR rods are a in the higher 151 mm or low 152mm range I cant recall exactly (151.7 or 152.2)

    • Connecting rod center distance: 144.15-144.25 mm (5.68-5.68 in) – info from Nissan Service Manual (Nissan 350Z, Z33 series, 2008, engine – VQ35HR)
      Connecting rod center distance: 149.45-149.55 mm (5.88-5.89 in) – info from Nissan Service Manual (Nissan 370Z, Z34 series, 2010, engine – VQ37VHR),
      but maybe you’re right, inaccuracies often occur in this documentation.

  3. I have had over 25 autos in my life , I got my 2008 350Z 4 years ago , I have 100K miles in it , ( Mexico roads) I drive it every day and the only issue with Engine so far is just the coils , and the ALB pump ( 2 times) I live this little car and even that’s old! People always look at it with amusement ! Another big problem I have had is the change of the front suspension ( 3 changes in 4 years) his ever i blame our Mexican roads but I have crised the country from Texas to Guatemala fes times!!!im happy with my little car and the best thing was my ex wife’s face when I bought it ( day after my divorce ) 😜

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