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The 2UZ-FE engine has 8 cylinders in a V-arrangement at a financial institution angle of 90° The 2UZ-FE attributes cast-iron block to increase durability via a five-bearings crankshaft and two aluminum heads through 2 camshafts (DOHC) and also 4 valves per cylinder (32 in total). The Toyota 2UZ-FE engine is equipped through SFI (Sequential Multiport Fuel Injection) device, Direct Ignition System (DIS) ignition device via individual coils on each spark plug, Electronic Spark Advance (ESA) and ETCS-i (Electronic Throttle Control System-intelligent). The latest engine versions (after 2007) were equipped through a VVTi (Variable Valve Timing) system for the intake camshafts.
A 94.0 mm (3.7 in) cylinder bore and also 84.0 mm (3.31 in) piston stroke provide the 2UZ-FE engine a complete of 4,663 cc (284.55 cu·in) of displacement. Compression proportion rating is 9.6:1 (prior to 2007) or 10.0:1 (after 2007).
The Toyota 2UZ-FE engine produced from 230 PS (169 kW; 227 HP) at 4,800 rpm to 288 PS (212 kW; 284 HP) at 5,400 rpm of maximum power and also from 343 N·m (35 kg·m, 253 ft·lb) at 3,400 rpm to 450 N·m (45.9 kg·m, 332 ft·lb) at 3,400 rpm of peak torque depending upon year and also vehicle version.
The breakdvery own of the engine code is as follows:2 – second generation engineUZ – Engine familyF – Economy narrow-angle DOHCE – Multi Point Fuel Injection
|Layout||Four stroke, V8|
|Fuel type||Gasoline (petrol)|
|Displacement||4.7 L, 4,663 cc (284.55 cu in)|
|Fuel system||Sequential multi-allude fuel injection (SFI)|
|Power output||From 230 PS (169 kW; 227 HP) at 4,800 rpm to 288 PS (212 kW; 284 HP) at 5,400 rpm|
|Torque output||From 343 N·m (35 kg·m, 253 ft·lb) at 3,400 rpmto 450 N·m (45.9 kg·m, 332 ft·lb) at 3,400 rpm|
|Dimensions (L x W x H):||–|
|Weight||255 kg (562.2 lbs))|
The 2UZ–FE engine has a cast-iron cylinder block in a V plan at a bank angle of 90°. This engine’s firing order is 1-8-4-3-6-5-7-2. The crankshaft is supported by 5 bearings. These bearings are made of aluminum alloy. The engine is equipped with a fully well balanced steel crankshaft via 5 journals and eight counterweights.
The 2UZ-FE engine used forged and sintered connecting rods. Pisloads are made of high temperature-resistant aluminum alloy. Piston pins are the full-floating type. After 2007 the piston shape was readjusted and also oil jets were presented to cool the pisloads. To conserve mass, plastic area tightening bolts are provided for the crankshaft bearing caps and also connecting rod caps. The Toyota 2UZ–FE motor has actually two compression and single oil control rings.
A 94.0 mm (3.7 in) cylinder bore and 84.0 mm (3.31 in) piston stroke give the 2UZ-FE engine a full of 4,663 cc of displacement. Compression proportion rating is 9.6:1 for engines before 2007 and also 10.0:1 for engines after 2007.
|Cylinder block alloy||Cast-iron|
|Compression ratio:||1998-2007: 9.6:12007-2011: 10.0:1|
|Cylinder bore:||94.0 mm (3.7 in)|
|Piston stroke:||84.0 mm (3.31 in)|
|Number of piston rings (compression / oil):||2 / 1|
|Number of main bearings:||5|
|Cylinder inner diameter (standard):||94.002-94.010 mm (3.7009-3.7012 in)|
|Piston skirt diameter (standard):||93.902-93.912 mm (3.6969-3.6973 in)|
|Piston compression height:||–|
|Piston pin outer diameter:||21.997-22.009 mm (0.866-0.8665 in)|
|Connecting rod bushing inner diameter:||22.005-22.014 mm (0.8663-0.8667 in)|
|Connecting rod huge finish diameter:||50.000-55.006 mm (1.9685-2.1656 in)|
|Connecting rod facility distance:||–|
|Crankshaft primary journal diameter:||66.988-67.000 mm (2.6373-2.6378 in)|
|Crankpin diameter:||51.982-52.000 mm (2.0465-2.0472 in)|
|Crankshaft center distance:||42 mm (1.655 in)|
Key bearing cap bolts tightening procedure and also torque specs:Tip 1: 27 Nm; 2.7 kg·m; 20 ft·lbStep 2: Turn bolts 90°
After securing bearing cap bolts, make certain crankshaft turns smoothly by hand.
Connecting rod bearing boltsTip 1: 24.5 Nm; 2.5 kg·m; 18 ft·lbTip 2: Turn bolts 90°
The cylinder heads are made of aluminum alloy, with a cross-circulation form intake and also exhaust layout and via pentroof form combustion chambers. The 2UZ-FE engine has actually dual overhead camshafts architecture (DOHC) with 4 valves per cylinder (32 valves in total). The intake camshafts are propelled by the timing belt, and a equipment on the intake camshaft engeras via a equipment on the exhaust camshaft to drive it. In 2007, the engine started to use the VVTi (Variable Valve Timing-intelligent) system.
The intake valve head diameter is 34.5 mm (1.3583 in) and also the exhaust valve diameter is 29.0 mm (1.1417 in). To actuate the valves, this engine supplied inner-shim kind, steel valve lifters that are crowned on the side-sliding percentage to reduce friction. For the engine variation after 2007, lead-complimentary valve seats are used.
The 2UZ-FE motor was not equipped through hydraulic valve lifters, therefore one-of-a-kind shims are provided to readjust the valve clearance.
The early on variation of the 2UZ-FE engine had a cast aluminum intake manifold, a plastic intake manifold was offered for the 2UZ-FE engine after 2007.
|Block head alloy||Aluminium|
|Valve Arrangement:||DOHC, belt drive|
|Cylinder head height:||–|
|Valves:||32 (4 valves per cylinder)|
|Intake valve timing:||Non VVTi: 219°|
|Exhaust valve timing:||Non VVTi: 229°|
|Valve head diameter:||INTAKE||34.5 mm (1.3583 in)|
|EXHAUST||29.0 mm (1.1417 in)|
|Valve length:||INTAKE||95.05 mm (3.7421 in)|
|EXHAUST||95.10 mm (3.7441 in)|
|Valve stem diameter:||INTAKE||5.470-5.485 mm (0.2154-0.2159 in)|
|EXHAUST||5.465-5.480 mm (0.2152-0.2157 in)|
|Valve spring totally free length:||INTAKE||54.1 mm (2.1299 in)|
|EXHAUST||54.1 mm (2.1299 in)|
|Valve camshaft lobe height:||INTAKE||41.940-42.040 mm (1.6512-1.6551 in)|
|EXHAUST||41.960-42.060 mm (1.652-1.6559 in)|
|Camshaft journal diameter:||26.954-26.970 mm (1.0612-1.0618 in)|
Head tightening procedure and also torque specs:Tip 1: 32 Nm; 3.2 kg·m; 24 ft·lbTip 2: Turn all bolts 90°Tip 3: Turn all bolts another 90°
|Valve clearance (Cold)|
|Intake valve||0.15-0.25 mm (0.006-0.010 in)|
|Exhaust valve||0.25-0.35 mm (0.010-0.014 in)|
|Standard||12.2 kg/m2 / 300 rpm|
|Minimun||10.0 kg/m2 / 300 rpm|
|Compression differential limit in between cylinders||1.0 kg/m2 / 300 rpm|
|Oil intake , L/1000 kilometres (qt. per miles)||as much as 0.5 (1 qt. per 1200 miles)|
|Recommended engine oil||5W-30|
|Oil form API||SL or SJ|
|Engine oil capacity (Refill capacity)||With filter adjust 6.4-6.8 litersWithout filter adjust 5.7-6.4 liters, depending upon year and auto model.|
|Oil readjust interval, kilometres (miles)||8,000 (5,000)|
|Oil Pressure||Idle speed: 29 kPa (0.3 kgf/cm 2 , 4.3 psi) or more3,000 rpm: 294 – 588 kPa (3.0 – 6.0 kgf/cm 2 , 43 – 85 psi)|
|Spark plug||NGK: IFR6A11 DENSO: SK20R11.||Spark plug gap||1.1 mm (0.0433 in)||Spark plug tightening torque||17.5 Nm (1.8 kg⋅m, 13 ft⋅lb)|
Valve clearance adjustment data
Calculate the thickness of new adjusting valve shim so valve clearance comes within specified worths.
R = Thickness of removed valve shimN = Thickness of brand-new valve shimM = Measured valve clearance
Intake:N = R +
Valve shims are obtainable in 41 sizes range from 2.00 mm (0.0787 in) to 2.80 mm (0.1102 in), in actions of 0.02 mm (0.0008 in).
Example (exhaust valve):R = 2.10 mmM = 0.52 mmN = 2.10 + (0.45 – 0.30) = 2.25 mm.
|Lexus GX 470||2002–2009|
|Lexus LX 470||1998–2007|
|Toyota Land also Cruiser||1998–2011|
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