Nissan VG33E

Nissan VG33EThe Nissan VG33E is a 3.3 l (3,275 cc, 199.85 cu-in) V6 60° four-stroke cycle water-cooled naturally aspirated internal combustion gasoline engine from Nissan VG-family. The engine was producted from 1996 up to 2004.

The VG33E features a cast-iron block and two aluminum heads with single overhead camshafts (SOHC) and two valves per cylinder. The Nissan VG33E engine is equipped with a multiport fuel injection (MFI) system and mechanically timed electrical ignition system with a mechanical distributor.

Fuel system. Two types of fuel enjection timing system are used.

  • Sequential multiport fuel injection is used when the engine is running. Fuel is injected into each cylinder during each engine cycle according to the firing order.
  • Semultaneous multiport fuel injection system is used when the engine is being started or if the fail-safe system is operating. Fuel is injected semultaneously into all six cylinders two times each engine cycle.

Ignition system.
The ignition system is controlled by the ECU to maintain the best air-fuel ratio for every running condition of the engine. The ignition timing data is stored in the ECM, this data forms the map shown. The ECM receives information such as the injection pulse width and camshaft position sensor signal. Computing this information, ignition signals are transmitted to the power transistor.

The compression ratio rating is 8.9:1. The Nissan VG33E has a 91.5 mm (3.6 in) cylinder bore and 83 mm (3.27 in) piston stroke. It produces from 170 PS (125 kW; 168 HP) at 4,800 rpm to 182 PS (134 kW; 180 HP) at 4,800 rpm of horsepower and 266 Nm (27.1 kg·m; 196.3 ft·lb) at 2,800 rpm or 274 Nm (27.9 kg·m; 202.2 ft·lb) at 2,800 rpm of torque.

The breakdown of the engine code is as follows:

  • VG – Engine Family
  • 33 – 3.3 Liter Displacement
  • E – Multi Point Fuel Injection

General information

Engine Specifications
Engine codeVG33E
LayoutFour stroke, V6
Fuel typeGasoline (petrol)
Production1996-2004
Displacement3.3 L, 3,275 cc (199.85 cu in)
Fuel systemMulti Point Fuel Injection
Power adderNone
Power output 170 PS (125 kW; 168 HP) at 4,800 rpm
182 PS (134 kW; 180 HP) at 4,800 rpm
Torque output 266 Nm (27.1 kg·m; 196.3 ft·lb) at 2,800 rpm
274 Nm (27.9 kg·m; 202.2 ft·lb) at 2,800 rpm
Firing order1-2-3-4-5-6
Dimensions (L x W x H):
Weight

Cylinder block

The VG33E has a cast-iron block with a four-bearings crankshaft supported system. The cylinder bore is 91.5 mm (3.6 in), piston stroke is 83.0 mm (3.27 in) and the compression ratio rating is 8.9:1. The Nissan VG33E motor has two compression and one oil control rings. The engine has forged steel connecting rods with 154.10 mm (6.0669 in) center distance. The crankshaft main journal diameter is 62.9 mm (2.48 in) and the crankpin diameter is 49.9 mm (1.97 in), center distance is 41.5 mm (1.63 mm).

Cylinder block
Cylinder block alloyCast-iron
Compression ratio:8.9:1
Cylinder bore:91.5 mm (3.6 in)
Piston stroke:83.0 mm (3.27 in)
Number of piston rings (compression / oil):2 / 1
Number of main bearings:4
Cylinder inner diameter (standard):91.500 mm (3.6024 in)
Piston skirt diameter (standard):91.485 mm (3.6018 in)
Piston pin outer diameter:20.971-20.983 mm (0.8256-0.8261 in)
Piston ring side clearance:Top0.024-0.076 mm (0.0009-0.0030 in)
Second0.030-0.070 mm (0.0012-0.0028 in)
Oil0.015-0.185 mm (0.0006-0.0073 in)
Piston ring end gap:Top0.21-0.44 mm (0.0083-0.0173 in)
Second0.50-0.69 mm (0.0197-0.0272 in)
Oil0.20-0.69 mm (0.0079-0.0272 in)
Connecting rod small end diameter:20.982-20.994 mm (0.8261-0.8265 in)
Connecting rod center distance:154.1-154.2 mm (6.067-6.071 in)
Crankshaft main journal diameter:62.975 mm (2.4763 in)
Crankpin diameter:49.974 mm (1.9675 in)
Crankshaft center distance:41.47-41.53 mm (1.6327-1.6350 in)

Main bearing cap bolts tightening procedure and torque specs:

  • 90-100 Nm; 9.2-10.2 kg·m; 67-74 ft·lb in two-three stages

After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.

Connecting rod bearing nut

  • Step 1: 14-16 Nm; 1.4-1.6 kg·m; 10-12 ft·lb
  • Step 2: Turn nuts 60-65° or 59-65 Nm; 6.0-6.6 kg·m; 43-48 ft·lb

Crankshaft pulley bolt

  • 191-211 Nm; 19.5-21.5 kg·m; 141-156 ft·lb

Flywheel (M/T) or Drive plate (A/T) fixing bolts

  • 83-93 Nm; 8.5-9.5 kg·m; 61-69 ft·lb

Cylinder head

The cylinder head is made of strong, light aluminum alloy which gives it good cooling efficiency. The has single over-head one-piece cast camshafts for each head and rocker shaft with rocker arms. The camshafts are driven by a single timing belt.

The intake valve diameter is 42.0 mm (1.65 in), the exhaust valve diameter is 35.0 mm (1.38 in), the duration is 244° for the intake side and 240° for the exhaust side. Each valve used dual valve spring. The VG33E is equipped with two valves per cylinder with self-adjusting hydraulic lifters. The engine has a cast aluminum lower intake manifold with either a cast aluminum or plastic upper intake manifold (plenum).

Cylinder head
Block head alloyAluminium
Valve Arrangement:SOHC, belt drive
Head surface flatnessLess than 0.05 mm (0.002 in)
Valves:12 (2 valves per cylinder)
Intake valve timing244°
Exhaust valve timing:240°
Valve head diameter:INTAKE41.95-42.25 mm (1.652-1.663 in)
EXHAUST35.0-35.2 mm (1.378-1.386 in)
Valve length:INTAKE125.3-125.9 mm (4.93-4.96 in)
EXHAUST124.2-124.8 mm (4.89-4.91 in)
Valve stem diameter:INTAKE6.965-6.980 mm (0.2743-0.2748 in)
EXHAUST7.962-7.970 mm (0.3135-0.3138 in)
Valve spring free length:OUTER51.2 mm (2.016 in)
INNER44.1 mm (1.736 in)
Camshaft cam height:INTAKE39.242-39.432 mm (1.5450-1.5524 in)
EXHAUST38.943-39.133 mm (1.5332-1.5407 in)
Camshaft journal diameter:№146.920-46.940 mm (1.8470-1.8480 in)
№2,3,442.420-42.440 mm (1.6701-1.6709 in)
№547.920-47.940 mm (1.8866-1.8874 in)

Head tightening procedure and torque specs:

  • Step 1: 39 Nm; 4.0 kg·m; 29 ft·lb
  • Step 2: 123 Nm; 12.5 kg·m; 90 ft·lb
  • Step 3: Loosen all bolts completely
  • Step 4: 34-44 kg·m; 3.5-4.5 kg·m; 25-33 ft·lb
  • Step 5: Turn all bolts 65-70° or to 123 Nm; 12.5 kg·m; 90 ft·lb

Camshaft sprocket bolts

  • 78-88 Nm; 8.0-9.0 kg·m; 58-65 ft·lb

Maintenance data

Compression pressure
Standard12.2 kg/m2 (173 psi) / 300 rpm
Minimun9.0 kg/m2 (128 psi) / 300 rpm
Compression differential limit between cylinders1.0 kg/m2 (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, 10W-30, 10W-40, 20W-40, 20W-50
Oil type APIAPI SG or SH
Engine oil capacity (Refill capacity) With filter change 3.7 l (3-7/8 Us. qt., 3-1/4 Imp. qt)
Without filter change 3.4 l (3-5/8 Us. qt., 3 Imp. qt.)
Oil change interval, km (miles)Every 6,000 (3,750)
Ignition system
Spark plug Standard type: NGK BKR5ES-11
Hot type: BKR4ES-11
Cold type: BKR6ES-11
Spark plug gap1.0-1.1 mm (0.039-0.043 in)

Vehicle applications

ModelYears Produced
Nissan Pathfinder1996–2004
Infiniti QX41997–2000
Nissan Frontier1999–2004
Nissan Xterra2000–2004
Nissan Elgrand (E50)1997–2002
Nissan Quest (V41)1999–2002
Mercury Villager1999–2002
Nissan Paladin1999–2004
Nissan Terrano (R50)1995–2002
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6 Comments

  1. Great engine. A bit under powered for this day and age but it has enough for the highway,4X4 etc.The plenum design is overdone but not impossible for the home mechanic. Parts are plentiful and affordable. Do the maintenance (timing belt,h2o pump,oil changes,etc) and this engine will do 300K and stay reliable. At least that’s my p!an.

  2. beware the timing belt, being an interference engine replace belt tensioner and water pump every 100 thou and expect a great long life out of the engine if you perform all other routine maintenace

    • If you remove the upper and lower intake manifold changing the #6 plug becomes trivial 😛
      Alternatively one could remove the dashboard and cut a hole through the firewall from inside the cab. Should make changing that plug a breeze 😀
      Great design 10/10

    • No need to take of manifolds.Buy a swivel spark plug socket $6 at autozone and have a 6 inch extension or 2-3 6inch
      wobble extension or extension and a pivot adaptor… follow your #6 plug wire and locate boot by mirror or touch its tight. You will notice a service indention in the firewall directly across from the plug. If you tuck your swivel socket down the indention and behind the metal hydraulic lines then toward your block you will land on it pretty easy. Try to notice the grove where the spark plug wire boot sets and just aim for that keeping up against and down the engines grove with tool or plug you will hit pretty easy. You should put a pad over your engine so you can lay on carefully. I laid from the front left side of radiator toward firewall. Can be done by finger feel mirror kinda helps. Use a rubber hose that will fit over the new spark plug post to find its home and thread the new one to avoid cross threading. It took me 30 min First time and 10 min second. Finding the right angle is key so try that it work great for me. Good luck!

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