Nissan 3.3 Engine Diagram
The 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 code | VG33E |
| Layout | Four stroke, V6 |
| Fuel type | Gasoline (petrol) |
| Production | 1996-2004 |
| Displacement | 3.3 L, 3,275 cc (199.85 cu in) |
| Fuel system | Multi Point Fuel Injection |
| Power adder | None |
| 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 order | 1-2-3-4-5-6 |
| 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 alloy | Cast-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: | Top | 0.024-0.076 mm (0.0009-0.0030 in) |
| Second | 0.030-0.070 mm (0.0012-0.0028 in) | |
| Oil | 0.015-0.185 mm (0.0006-0.0073 in) | |
| Piston ring end gap: | Top | 0.21-0.44 mm (0.0083-0.0173 in) |
| Second | 0.50-0.69 mm (0.0197-0.0272 in) | |
| Oil | 0.20-0.69 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 alloy | Aluminium | |
| Valve Arrangement: | SOHC, belt drive | |
| Head surface flatness | Less than 0.05 mm (0.002 in) | |
| Valves: | 12 (2 valves per cylinder) | |
| Intake valve timing | 244° | |
| Exhaust valve timing: | 240° | |
| Valve head diameter: | INTAKE | 41.95-42.25 mm (1.652-1.663 in) |
| EXHAUST | 35.0-35.2 mm (1.378-1.386 in) | |
| Valve length: | INTAKE | 125.3-125.9 mm (4.93-4.96 in) |
| EXHAUST | 124.2-124.8 mm (4.89-4.91 in) | |
| Valve stem diameter: | INTAKE | 6.965-6.980 mm (0.2743-0.2748 in) |
| EXHAUST | 7.962-7.970 mm (0.3135-0.3138 in) | |
| Valve spring free length: | OUTER | 51.2 mm (2.016 in) |
| INNER | 44.1 mm (1.736 in) | |
| Camshaft cam height: | INTAKE | 39.242-39.432 mm (1.5450-1.5524 in) |
| EXHAUST | 38.943-39.133 mm (1.5332-1.5407 in) | |
| Camshaft journal diameter: | №1 | 46.920-46.940 mm (1.8470-1.8480 in) |
| №2,3,4 | 42.420-42.440 mm (1.6701-1.6709 in) | |
| №5 | 47.920-47.940 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 | |
| Standard | 12.2 kg/m2 (173 psi) / 300 rpm |
| Minimun | 9.0 kg/m2 (128 psi) / 300 rpm |
| Compression differential limit between cylinders | 1.0 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 API | API 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 gap | 1.0-1.1 mm (0.039-0.043 in) |
Vehicle applications
| Model | Years Produced |
| Nissan Pathfinder | 1996–2004 |
| Infiniti QX4 | 1997–2000 |
| Nissan Frontier | 1999–2004 |
| Nissan Xterra | 2000–2004 |
| Nissan Elgrand (E50) | 1997–2002 |
| Nissan Quest (V41) | 1999–2002 |
| Mercury Villager | 1999–2002 |
| Nissan Paladin | 1999–2004 |
| Nissan Terrano (R50) | 1995–2002 |
Source: https://www.engine-specs.net/nissan/vg33e.html
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