Nissan VG30DE Engine Specs
The Nissan VG30DE engine is a 3.0 l (180.62 cu. in. 2,960 cc) natural aspirated V6 60° four-stroke gasoline engine from Nissan VG-family.
The Nissan VG30DE engine was made from 1985 up to 2000. The Nissan VG30DE engine was introduced at the 1985 Frankfurt Autoshow on the Nissan MID4 concept car.
The Nissan VG30DE compression ratio rating is 9.0:1-11.0:1. Cylinder bore, and the piston stroke is 87.0 mm (3.43 in) and 83.0 mm (3.27 in), respectively.
It delivers from 185 PS (136 KW; 182 HP) at 6,000 rpm to 230 PS (169 kW; 227 Horsepower) at 6,000 rpm of HP and from 245 Nm (24.99 kg·m; 180.81 ft·lb) at 4,400 rpm to 279 Nm (28.46 kg·m; 205.9 ft·lb) at 4,000 rpm of maximum torque.
The Nissan VG30DE engine features two aluminum heads with double overhead camshafts (DOHC), a cast-iron block, and four valves per Cylinder (24 valves in total).
The Nissan VG30DE engine is fitted with a multi-point fuel injection system and mechanically timed electrical ignition system with a single ignition coil and mechanical distributor. The Nissan VG30DE engine has a Variable Timing Control system on the intake camshafts and EGR system.
Two versions of the VG30DE engine were available for different markets. This engine version was used on Nissan 300ZX and Fairlady Z. The first version has two throttle bodies facing the front of the vehicle. The second version has two throttle bodies to the left side of the vehicle.
The breakdown of the Nissan VG30DE engine code is as follows:
- VG – Engine Family
- 30 – 3.0 Liter Displacement
- D – DOHC (Dual Overhead Camshafts)
- E – Multi-Point Fuel Injection
Nissan VG30DE (3.0 L, 24 valve) V6 Engine Specs
Engine Specifications
| Engine code | VG30DE |
| Layout | Four stroke, V6 |
| Fuel type | Gasoline (petrol) |
| Production | 1985-2000 |
| Displacement | 3.0L, 2,960 cc (180.62 cu in) |
| Fuel system | Multi Point Fuel Injection |
| Power adder | None |
| Power output | 185 PS (136 kW; 182 HP) at 6,000 rpm 190 PS (140 kW; 188 HP) at 6,000 rpm 200 PS (147 kW; 197 HP) at 6,000 rpm 212 PS (156 kW; 210 HP) at 6,000 rpm 224 PS (165 kW; 222 HP) at 6,000 rpm 230 PS (169 kW; 227 HP) at 6,000 rpm |
| Torque output | 245 Nm (25.0 kg·m; 180.8 ft·lb) at 4,400 rpm 250 Nm (25.5 kg·m; 184.5 ft·lb) at 4,400 rpm 260 Nm (26.5 kg·m; 191.9 ft·lb) at 4,400 rpm 262 Nm (26.7 kg·m; 193.4 ft·lb) at 4,400 rpm 268 Nm (27.3 kg·m; 197.8 ft·lb) at 4,400 rpm 273 Nm (27.8 kg·m; 201.5 ft·lb) at 4,800 rpm 279 Nm (28.5 kg·m; 205.9 ft·lb) at 4,000 rpm |
| Firing order | 1-2-3-4-5-6 |
| Dimensions (L x W x H): | – |
| Weight | 220 kg (485 lbs) |
Cylinder head
| Block head alloy | Aluminium | |
| Valve Arrangement: | DOHC, belt drive | |
| Head surface flatness | Less than 0.05 mm (0.002 in) | |
| Valves: | 24 (4 valves per cylinder) | |
| Intake valve timing | 248° | |
| Exhaust valve timing: | 248° | |
| Valve head diameter: | INTAKE | 34.0-34.2 mm (1.339-1.346 in) |
| EXHAUST | 29.5-29.7 mm (1.161-1.169 in) | |
| Valve length: | INTAKE | 103.1-103.3 mm (4.06-4.067 in) |
| EXHAUST | 103.6-103.8 mm (4.079-4087 in) | |
| Valve stem diameter: | INTAKE | 6.965-6.980 mm (0.2743-0.2748 in) |
| EXHAUST | 7.945-7.960 mm (0.3128-0.3134 in) | |
| Valve spring free length: | OUTER | 43.1 mm (1.697 in) |
| INNER | 43.1 mm (1.697 in) | |
| Camshaft cam height: | INTAKE | 40.405-40.595 mm (1.5907-1.5982 in) |
| EXHAUST | 40.405-40.595 mm (1.5907-1.5982 in) | |
| Camshaft journal diameter: | 27.935-27.955 mm (1.0998-1.1006 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
- 123-132 Nm; 12.5-13.5 kg·m; 90-98 ft·lb
Cylinder block
| Cylinder block alloy | Cast-iron | |
| Compression ratio: | 9.0:1, 10.5:1, 11.0:1 | |
| Cylinder bore: | 87.0 mm (3.43 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): | 87.000-87.010 mm (3.4252-3.4256 in) | |
| Piston skirt diameter (standard): | 86.975-86.985 mm (3.4242-3.4246 in) | |
| Piston pin outer diameter: | 21.993-22.001 mm (0.8657-0.8662 in) | |
| Piston ring side clearance: | Top | 0.040-0.073 mm (0.0016-0.0029 in) |
| Second | 0.030-0.063 mm (0.0012-0.0025 in) | |
| Oil | 0.015-0.185 mm (0.0006-0.0073 in) | |
| Piston ring end gap: | Top | 0.21-0.40 mm (0.0083-0.0157 in) |
| Second | 0.50-0.76 mm (0.0197-0.0299 in) | |
| Oil | 0.20-0.76 mm (0.0079-0.0299 in) | |
| Connecting rod small end diameter: | 22.000-22.012 mm (0.8661-0.8666 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 beam 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
- 216-235 Nm; 22-24 kg·m; 159-174 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
Maintenance data
| Compression pressure | |
| Standard | 13.1 kg/m2 (186 psi) / 300 rpm |
| Minimun | 10.0 kg/m2 (142 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 | 10W-30, 10W-40, 20W-40, 20W-50 |
| Oil type API | API SG |
| Engine oil capacity (Refill capacity) | With filter change 3.4 l (3-5/8 Us. qt., 3 Imp. qt) Without filter change 3.0 l (3-1/8 Us. qt., 2-5/8 Imp. qt.) |
| Oil change interval, km (miles) | Every 6,000 (3,750) |
| Oil pressure | Idle speed (78 kPA, 0.8 kg/cm3, 11 psi) 3,000 rpm (353-451 kPA, 3.6-4.6 kg/cm3, 51-65 psi) |
| Ignition system | |
| Spark plug | NGK Platinum-tipped type Standard type: PFR6B-11 Hot type: PFR5B-11 Cold type: PFR7B-11 |
| Spark plug tightening torque | 20-29 Nm; 2.0-3.0 kg·m; 14-22 ft·lb |
Vehicle Applications
| Model | Years Produced |
| Nissan MID4 Concept | 1985 |
| Nissan 300ZR (Z31) | 1986–1989 |
| Nissan 300ZX (Z32) | 1990–1997 |
| Nissan Fairlady Z (Z32) | 1989–2000 |
| Nissan Leopard (F31) | 1986–1992 |
| Infiniti J30 | 1992–1998 |
| Nissan Leopard J Ferie | 1992–1998 |
| Nissan Gloria | 1992–1995 |
| Nissan Cedric | 1992–1995 |
| Nissan Cima | 1989–1991 |
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Final Words
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