The Toyota 3VZ-FE is a 3.0 L (2,958 cc, 180.5 cu·in) V6, four-stroke cycle water-cooled naturally aspirated internal combustion gasoline engine, manufactured by the Toyota Motor Corporation since 1992 to 1997.
The 3VZ-FE engine has 6 cylinders in a V arrangement at a bank angle of 60° The 3VZ-FE features a cast-iron cylinder block with a four-bearings crankshaft and two aluminum heads with two camshafts (DOHC) and four valves per cylinder (24 in total). The Toyota 3VZ-FE engine is equipped with SFI (Sequential Multiport Fuel Injection) system and an electronic ignition system with a mechanical distributor.
An 87.5 mm (3.44 in) cylinder bore and 82.0 mm (3.23 in) piston stroke give the 3VZ-FE engine a total of 2,958 cc of displacement. The compression ratio rating is 9.6:1. The Toyota 3VZ-FE engine produced from 185 PS (136 kW; 182 HP) at 5,800 rpm to 200 PS (147 kW; 197 HP) at 5,800 rpm of maximum power and from 256 N·m (26.1 kg·m, 188.7 ft·lb) at 4,600 rpm to 275 N·m (28.0 kg·m, 202.7 ft·lb) at 4,600 rpm of peak torque.
The breakdown of the engine code is as follows:
- 3 – 3rd generation engine
- VZ – Engine family
- F – Economy narrow-angle DOHC
- E – Multi Point Fuel Injection
|Layout||Four stroke, V6|
|Fuel type||Gasoline (petrol)|
|Displacement||3.0 L, 2,958 cm2 (180.5 cu in)|
|Fuel system||Sequential multi-point fuel injection|
From 185 PS (136 kW; 182 HP) at 5,800 rpm|
to 200 PS (147 kW; 197 HP) at 5,800 rpm
From 256 N·m (26.1 kg·m, 188.7 ft·lb) at 4,600 rpm|
to 275 N·m (28.0 kg·m, 202.7 ft·lb) at 4,600 rpm
|Dimensions (L x W x H):||–|
The 3VZ–FE engine has 6 cylinders in a V arrangement at a bank angle of 60°. This engine’s firing order is 1–2–3–4–5–6. The crankshaft is supported by four bearings inside the crankcase. These bearings are made of copper and lead alloy. The crankshaft is integrated with semi 9 counterweights for balance. Oil holes are placed in the center of the crankshaft for supplying oil to the connecting rods, pistons and other components. Crankshaft main journal diameter is 64.000 mm (2.52 in) and crankpin diameter is 55.000 mm (2.16 in)
Pistons are made of high temperature–resistant aluminum alloy, and depression is built into the piston head to prevent interference with the valves. Piston pins are the full–floating type, with the pins fastened to neither the piston boss nor the connecting rods.
Each piston is equipped with two compressions and one oil control rings. The top compression ring is made of steel and the second compression ring is made of cast iron. The oil ring is made of a combination of steel and stainless steel. The outer diameter of each piston ring is slightly larger than the diameter of the piston and the flexibility of the rings allows them to a hub the cylinder walls when they are mounted on the piston.
Bore is 87.5 mm (3.44 in) and stroke is 82.0 mm (3.23 in). The compression ratio rating is 9.6:1.
|Cylinder block alloy||Cast-iron|
|Cylinder bore:||87.5 mm (3.44 in)|
|Piston stroke:||82.0 mm (3.23 in)|
|Number of piston rings (compression / oil):||2 / 1|
|Number of main bearings:||4|
|Cylinder inner diameter (standard):||87.500-87.510 mm (3.4449-3.4453 in)|
|Piston skirt diameter (standard):||87.360-87.370 mm (3.4394-3.4398 in)|
|Piston pin outer diameter:||21.997-22.006 mm (0.866-0.8664 in)|
|Connecting rod bushing inner diameter:||22.005-22.014 mm (0.8663-0.8667 in)|
|Piston ring side clearance:||Top||0.010-0.080 mm (0.0004-0.0031 in)|
|Second||0.030-0.070 mm (0.0012-0.0028 in)|
|Piston ring end gap:||Top||0.280-0.500 mm (0.011-0.0197 in)|
|Second||0.380-0.600 mm (0.015-0.0236 in)|
|Oil||0.150-0.570 mm (0.0059-0.0224 in)|
|Crankshaft main journal diameter:||63.985-64.000 mm (2.5191-2.5197 in)|
|Crankpin diameter:||54.987-55.000 mm (2.1648-2.1654 in)|
Main bearing cap bolts tightening procedure and torque specs:
- Step 1: 61 Nm; 6.2 kg·m; 45 ft·lb
- Step 2: Turn bolts 90°
After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.
Connecting rod bearing bolts
- Step 1: 25 Nm; 2.5 kg·m; 18 ft·lb
- Step 2: Turn bolts 90°
Crankshaft pulley bolt
- 250 Nm; 25.0 kg·m; 184 ft·lb
Flywheel or drive plate
- 83 Nm; 8.5 kg·m; 61 ft·lb
The cylinder heads are made of aluminum alloy, with a cross-flow type intake and exhaust layout and with pent–roof type combustion chambers. The spark plugs are located in the center of the combustion chambers. The 3VZ-FE engine has double overhead camshafts DOHC design with four valves per cylinder (two intake and two exhaust valves). The intake camshafts are driven by a single timing belt, and a gear on the intake camshaft engages with a gear on the exhaust camshaft to drive it. The camshaft journal is supported at five (intake) or four (exhaust) places between the valve lifters of each cylinder and on the front end of the cylinder head.
The intake valves are 34.0 mm (1.34 in) of diameter, while the exhaust valves have a diameter of 27.3 mm (1.07 in). The intake duration is 230°, the valve lift is 7.85 mm, and the exhaust duration is 230°, valve lift is 7.60 mm;. Exhaust and intake valves are equipped with irregular pitch springs made of special valve spring carbon steel which are capable of functioning no matter what the engine speed.
Adjustment of the valve clearance is done by means of an outer shim type system, in which valve adjusting shims are located above the valve lifters. This permits the replacement of the shims without removal of the camshafts.
|Block head alloy||Aluminium|
|Valve Arrangement:||DOHC, belt drive|
|Cylinder head height:||–|
|Valves:||24 (4 valves per cylinder)|
|Intake valve timing:||230°|
|Exhaust valve timing:||230°|
|Valve head diameter:||INTAKE||34.0 mm (1.3386 in)|
|EXHAUST||27.3 mm (1.0748 in)|
|Valve length:||INTAKE||95.15 mm (3.7461 in)|
|EXHAUST||94.90 mm (3.7362 in)|
|Valve stem diameter:||INTAKE||5.970-5.985 mm (0.235-0.2356 in)|
|EXHAUST||5.965-5.980 mm (0.2348-0.2354 in)|
|Valve spring free length:||INTAKE||41.40 mm (1.6299 in)|
|EXHAUST||41.40 mm (1.6299 in)|
|Camshaft lobe height:||INTAKE||42.160-42.260 mm (1.6598-1.6638 in)|
|EXHAUST||41.960-42.060 mm (1.652-1.6559 in)|
|Camshaft journal diameter:||26.949-26.965 mm (1.061-1.0616 in)|
Head tightening procedure and torque specs:
- 12 pointed head Step 1: 34 Nm; 3.5 kg·m; 25 ft·lb
- Step 2: Turn all bolts 90°
- Step 3: Turn all bolts another 90°
- Recessed head: 18 Nm; 1.8 kg·m; 13 ft·lb
|Intake valve||0.13-0.23 mm (0.0051-0.0091 in)|
|Exhaust valve||0.27-0.37 mm (0.0106-0.0146 in)|
|Standard||12.5 kg/m2 (181 psi) / 300 rpm|
|Minimun||10.0 kg/m2 (145 psi) / 300 rpm|
|Compression differential limit between cylinders||1.0 kg/m2 (15 psi) / 300 rpm|
|Oil consumption , L/1000 km||up to 1.0|
|Recommended engine oil||SAE 5W-30, 10W-30|
|Oil type API||SG “Energy–Conserving”|
|Engine oil capacity (Refill capacity)||
With filter change 4.3 l (4.5 US qts, 3.8 lmp.qts)|
Without filter change 4.1 l (4.3 US qts, 3.6 lmp. qts)
|Oil change interval, km (miles)||10,000 (6,000)|
Idle speed: More than 29 kPa (0.3 kg/cm2, 4.3 psi)|
3,000 rpm: 249-539 kPa (3.0-5.5 kg/cm2, 43-78 psi)
|Spark plug||NGK: BCPR6EP-11 DENSO: PQ20R|
|Spark plug gap||1.1 mm (0.0433 in)|
|Spark plug tightening torque||18 Nm (1.8 kg⋅m, 13 ft⋅lb)|
Valve clearance adjustment data
Calculate the thickness of the new adjusting valve shim so valve clearance comes within specified values.
R = Thickness of removed valve shim
N = Thickness of new valve shim
M = Measured valve clearance
N = R + [M – 0.20 mm (0.008 in)]
N = R + [M – 0.30 mm (0.012 in)]
Valve shims are available in 17 sizes to range from 2.50 mm (0.0984 in) to 3.30 mm (0.1299 in), in steps of 0.05 mm (0.0020 in).
Example (exhaust valve):
R = 2.70 mm
M = 0.52 mm
N = 2.70 + (0.45 – 0.30) = 2.85 mm.