Nissan VK50VE

Nissan VK50VEThe Nissan VK50VE is a 5.0 L (5,026 cc, 306.7 cu·in) natural aspirated V8 4-stroke gasoline engine from Nissan VK-family. The engine was manufactured from 2008 to 2017.

The VK50VE engine features a lightweight aluminum block with a fully balanced five-bearings crankshaft and two aluminum heads with two camshafts (DOHC) and four valves per cylinder. The VK50VE is equipped with CVTC (twin intake/exhaust), VVEL systems and NDIS (Nissan Direct Ignition System) with individual coils on each spark plug.

The cylinder bore is 95.5 mm (3.76 in) and the piston stroke is 87.7 mm (3.45 in). The compression ratio rating is 10.9:1. Redline is set at 6,800 rpm. The Nissan VK50VE engine produced 394.4 PS (290 kW; 390.0 HP) at 6,500 rpm of maximum output power and 500 N·m (51.0 kg·m, 368.5 ft·lb) at 4,400 rpm of peak torque.

The breakdown of the engine code is as follows:

  • VK – Engine Family
  • 50 – 5.0 Liter Displacement
  • V – VVL (Variable Valve Lift)
  • E – Multi Port Fuel Injection

General information

Engine Specifications
Engine codeVK50VE
LayoutFour stroke, V8
Fuel typeGasoline (petrol)
Production2008-2017
Displacement5.0 L, 5,026 cm3 (306.7 cu in)
Fuel systemMulti Port Fuel Injection
Power adderNone
Power output394.4 PS (290 kW; 390.0 HP) at 6,500 rpm
Torque output500 N·m (51.0 kg·m, 368.5 ft·lb) at 4,400 rpm
Firing order1-8-7-3-6-5-4-2
Dimensions (L x W x H):
Weight

Cylinder block

The VK50VE has an aluminum block with a five-bearings crankshaft supported system. It has low-friction molybdenum-coated pistons. The crankshaft journal diameter is 64.0 mm (2.52 in), the crankpin diameter is 54.0 mm (2.12 in).

The cylinder bore is 95.5 mm (3.76 in), piston stroke is 87.7 mm (3.45 in) and the compression ratio rating is 10.9. The Nissan VK50VE motor has two compression and one oil control rings.

Cylinder block
Cylinder block alloyAluminium
Compression ratio:10.9:1
Cylinder bore:95.5 mm (3.76 in)
Piston stroke:87.7 mm (3.45 in)
Number of piston rings (compression / oil):2/1
Number of main bearings:5
Cylinder inner diameter (standard):95.500-95.510 mm (3.7598-3.7602 in)
Piston skirt diameter (standard):95.480-95.490 mm (3.759-3.7594 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 (0.0091-0.013 in)
Second0.33-0.48 mm (0.013-0.0189 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:157.68-157.78 mm (6.2079-6.2118 in)
Crankshaft main journal diameter:64.000 mm (2.5197 in)
Crankpin diameter:54.000 mm (2.126 in)
Crankshaft center distance:43.85 mm (1.725 in)

Cylinder head

The cylinder head is made of strong, light aluminum alloy which gives it good cooling efficiency. This engine has DOHC design with 4 valves per cylinder (32 valves in total). The VK5OVE is equipped with CVTC (Continuous Variable Valve Timing Control) system and VVEL (Variable Valve Event and Lift) systems. C-VTC enables variable valve timing in response to engine rpm and throttle opening. Enhanced control and reduced system friction improve response and optimize torque characteristics.

VVEL operation principle: A rocker arms and two types of links open the intake valves by transferring the rotational movement of a drive shaft with an eccentric cam to the output cam. The movement of the output cam is varied by rotating the control shaft with a stepper motor and changing the fulcrums of the links. This makes the continuous adjustment of the amount of the valve’s lift, during the intake valve event in the four-stroke cycle, possible. CVTC and VVEL systems together control the valve phases and its valve events, allowing free-control of the valve timing and lift.

The camshafts are driven by two chains, one for each head. The timing chain transmits the rotational movement from the crankshaft to both intake and exhaust camshafts.

The intake valve diameter is 36.7 mm (1.45 in) the exhaust valve diameter is 30.5 mm (1.20 in), respectively. The VK50VE motor does not have hydraulic lifters, so special valve lifters are used to adjust the valve clearance.

Cylinder head
Block head alloyAluminium
Valve Arrangement:DOHC, chain drive
Cylinder head height:126.4 mm (4.9764 in)
Valves:32 (4 valves per cylinder)
Valve head diameter:INTAKE36.6-36.9 mm (1.4409-1.4528 in)
EXHAUST30.2-30.5 mm (1.189-1.2008 in)
Valve length:INTAKE100.11 mm (3.9413 in)
EXHAUST94.67 mm (3.7272 in)
Valve stem diameter:INTAKE5.965-5.980 mm (0.2348-0.2354 in)
EXHAUST5.955-5.970 mm (0.2344-0.2350 in)
Valve spring free length:INTAKE48.69 mm (1.9169 in)
EXHAUST47.35 mm (1.8642 in)
Exhaust camshaft cam height:45.475-45.665 mm (1.7904-1.7978 in)
Camshaft journal diameter (EXHAUST):№ 125.935-25.955 mm (1.0211-1.0218 in)
№2-525.950-25.970 mm (1.0217-1.0224 in)

Head tightening procedure and torque specs:

  • Step 1: 40.0 Nm; 4.1 kg·m; 30 ft·lb
  • Step 2: Turn all bolts 75°
  • Step 3: Loosen all bolts completely
  • Step 4: 40.0 Nm; 4.1 kg·m; 30 ft·lb
  • Step 5: Turn all bolts 65°
  • Step 6: Turn all bolts another 65°

Maintenance data

Valve clearance (COLD)
Intake valve0.26-0.34 mm (0.0102-0.0134 in)
Exhaust valve0.29-0.37 mm (0.0114-0.0146 in)
Valve clearance (HOT)
Intake valve0.304-0.416 mm (0.012-0.0164 in)
Exhaust valve0.308-0.432 mm (0.0121-0.017 in)
Compression pressure
Standard17.0 kg/m2 (242 psi) / 200 rpm
Minimun12.5 kg/m2 (178 psi) / 200 rpm
Compression differential limit between cylinders1.0 kg/m2 (15 psi) / 200 rpm
Oil system
Oil consumption , L/1000 km (qt. per miles)up to 0.5 (1 qt. per 1200 miles)
Recommended engine oilSAE 5W-30
Oil type APISM
Engine oil capacity (Refill capacity) With filter change 6.1 L (6.45 US.qts, 5.37 Imp. qts)
Without filter change 5.8 L (6.13 US.qts, 5.1 Imp. qts)
Oil change interval, km (miles)8,000 (5,000)
Oil Pressure, kPa (kg/cm2, psi) Idle speed: More than 98 (1.0, 14)
2,000 rpm: More than 294 (3.0, 43)
Ignition system
Spark plugDENSO FXE22HR11
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

Intake:
N = R + [M – 0.30 mm (0.012 in)]
Exhaust:
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.

ColdHot
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 FX502009–2013
Infiniti QX702014
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