Toyota 3UR-FE 5.7L Engine Specs, Problems, Reliability. The 3UR-FE engine belongs to the brand-new Toyota’s UR household. It is a 5.7-liter V8 with aluminum block and heads. This engine is the biggest displacement variation of UR household created for usage in heavy Toyota’s cars and trucks (Tundra, Sequoia, Land Cruiser, and Lexus LX570 designs). The 3UR-FE engine became an ideal replacement for the 4.7-liter 2UZ-FE.
Like other members of its household, which likewise consisted of the 1UR-FE/FSE, 2UR-GSE/FSE, the 3UR-FE has an aluminum cylinder block with 90-degree ‘V’ angle. Bore pitch is 105.5 mm; 21.0 mm cylinder banks offset. All UR engines have a 94 mm bore size. There is a 102.0 mm stroke for increasing displacement to 5.7 l. The 3UR has its own forged steel crankshaft with 6 balance weights, forged connecting rods, and aluminum alloy pistons with a resin finishing. Four oil jets in the block cools pistons by oil.
The 3UR-FE heads have the same design. They are aluminum alloy cylinder heads with camshaft real estates, four valves per cylinder (2 exhaust valves and two intake valves), and double overhead camshafts. The valves are activated by roller rocker arms. The 3UR-FE engine has hydraulic lifters. The engine utilizes two primary timing chains for the consumption camshafts.
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Toyota 3UR-FE 5.7L Engine Specs, Problems, Reliability
Each consumption camshaft drives the exhaust camshaft by the secondary timing chain. All chains have a chain tensioner that utilized oil pressure and a spring. The engine can manage the intake and exhaust camshaft angles by the Dual Variable Valve Timing – intelligent system (Double VVT-i).
The intake manifold of the 3UR-FE is made from plastic and equipped with Toyota’s Acoustic Control Induction System (ACIS). This system allows changing a length of the intake ports according to the engine speeds. The 3UR-FE has linkless-type throttle body with electronically controlled throttle angle by ETCS-I (Electronic Throttle Control System – intelligent). The 3UR-FE utilizes a sequential fuel injection (SFI) only, there is no direct injection. The air mass and flow rate are determined by slot-in type air circulation meter which likewise has an integrated intake air temperature level sensing unit. There is also Toyota’s DIS ignition system (Direct Ignition System) which utilized specific ignition coils for each cylinder. The 3UR has iridium-tipped spark plugs with prolonged service period.
The 5.7-liter engine has 4-2-1 stainless steel exhaust manifolds (headers). The 4-2-1 or semi-dual structure reduces exhaust gas disturbance and supplies more torque at middle speed. To meet high emission requirements, the engine has two ceramic three-way catalytic converters on both sides and Exhaust Gas Recirculation (EGR) system.
Toyota 5.7 V8 3UR-FE Engine Problems and Reliability
The 3UR-FE is the most long lasting and dependable engine for all UR engine household. The Toyota made over 1.3 million kilometers of toughness screening for this engine. In reality, the 3UR-Fe can run more than 400,000 miles (650,000 km) smoothly with regular upkeep with utilizing premium fuel and oil.
Nothing is perfect and this engine too. The 3UR-FE has a problem with coking of the piston oil rings which triggered high oil intake. After that, the oil consumption increases gradually. To avoid this issue, usage just the advised top quality oil and enjoy the oil level. The 3UR-FE crankcase ventilation system sensor fails hugely frequently, and electronic throttle system ETCS-i is not as dependable as it should be. The issue with water pump is also found in this engine. Like other UR engines, the 3UR-FE has a leaking water pump with short life about 60,000 miles (100,000 km).
you must see more engine detail in here: Engine – US Cars News or you can see on wiki here
Toyota 3UR-FE 5.7L Engine Specs
| Manufacturer | Toyota Motor Manufacturing Alabama |
| Production years | 2006-present |
| Cylinder block material | Aluminum |
| Cylinder head material | Aluminum |
| Fuel type | Gasoline |
| Fuel system | Fuel injection |
| Configuration | V |
| Number of cylinders | 8 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 94.0 (3.70 in) |
| Stroke, mm | 102.0 (4.02 in) |
| Displacement, cc | 5,663 cc (345.6 cu in) |
| Type of internal combustion engine | Four-stroke, naturally aspirated |
| Compression Ratio | 10.2:1 |
| Power, hp | 381 hp (283 kW)/5,600 |
| Torque, lb ft | 401 lb-ft (543 Nm)/3,600 |
| Engine weight | 489 lbs (222 kg) |
| Firing order | 1-8-7-3-6-5-4-2 |
| Engine oil weight | 0W-20 (5W-20) |
| Engine oil capacity, liter | 7.5 (7.93 qt) 0.4 (0.42 qt) – oil filter. |
| Oil change interval, mile | 10,000 (15,000 km) or 12 month |
| Applications | Toyota Tundra, Toyota Sequoia, Toyota Land Cruiser 200, Lexus LX 570 |
Toyota 3UR-FE 5.7L Engine Modifications
The 3UR-FSE TRD Supercharger. Toyota’s TRD provides the supercharger package which covered under guarantee and could be installed by dealers. The kit consists of a bolt-on Twin Vortices Series Roots-type supercharger which improve the performance of the 5.7-liter engine approximately 504 hp (376 kW) of power and 550 lb ft (750 Nm) of torque.
3UR-FBE – An E85 Ethanol version that was readily available as alternative for 2009-2014 Toyota Tundra and 2009-2014 Toyota Sequoia.