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Toyota UR engine
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Toyota UR engine
The Toyota UR engine family is a 32-valve dual overhead camshaft V8 piston engine series which was first introduced in 2006, as the UZ series it replaced began phasing out. Production started with the 1UR-FSE engine with D-4S direct injection for the 2007 Lexus LS. The series launched with a die-cast aluminum engine block, aluminum cylinder heads and magnesium cylinder head covers. All UR engines feature variable valve timing for both intake and exhaust cams or Dual VVT-i. Timing chains are used to drive the camshafts. The UR engine has been produced in 4.6, 5.0, and 5.7-liter displacement versions.
The 1UR-FSE V8 engine, introduced with the Lexus LS 460 & LS 460 L luxury sedans in 2006 has a 4.6 L (4,608 cc) displacement, which it gets from a bore and stroke of 94 mm × 83 mm (3.70 in × 3.27 in). The engine includes D-4S direct injection and dual VVT-iE producing 385 hp (287 kW; 390 PS) at 6,400 rpm and 51 kg⋅m (500 N⋅m; 369 lb⋅ft) at 4,100 rpm. The maximum engine speed is 6,800 RPM.
1UR-FSE undergoes X-ray inspection and a CT scan to ensure minimal deformation after the die-casting process. Camshafts are hollow to minimize weight.
Applications:
The 1UR-FE is based on the 1UR-FSE but lacks the D-4S direct injection technology. Originally used for Lexus vehicles in the Middle East, it was introduced in 2010 in other markets to replace the 2UZ-FE engine in truck and SUV applications. This engine produces 322 hp (240 kW; 326 PS) at 6,900 rpm and 46.9 kg⋅m (460 N⋅m; 339 lb⋅ft) at 4,400 rpm in the Lexus GS and LS. For the Toyota Land Cruiser and Lexus GX the engine produces 304 hp (227 kW; 308 PS) at 5,900 rpm and 44.8 kg⋅m (439 N⋅m; 324 lb⋅ft) at 3,800 rpm.
Applications:
The 2UR-GSE is a 5.0 L; 303.2 cu in (4,969 cc) naturally aspirated V8 engine fitted to the Lexus IS F, RC F, GS F, LC 500, and IS 500. It is an all-alloy DOHC, 4 valves per cylinder with Yamaha-designed high-flow cylinder heads, titanium inlet valves, high-lift camshafts and dual-length intake. It has D-4S gasoline port and direct injection, Dual VVT-i with electric VVT-iE inlet camshaft actuation. Bore and stroke is 94 mm × 89.5 mm (3.70 in × 3.52 in). The engine's redline was increased with each iteration, ranging from 6,800 rpm to 7,300 rpm. The South Africa-based Gazoo Racing SA Toyota Hilux Dakar truck also utilizes the engine. The Lexus RCF GT3 utilizes a re-stroked version of this engine which displaces 5.4 liters and makes 373 kW (500 bhp; 507 PS).
In the IS F, the engine had an 11.8:1 compression ratio and produced 310 kW (416 bhp; 421 PS) @ 6,600 rpm and 51.3 kg⋅m (371 lb⋅ft; 503 N⋅m) @ 5,200 rpm of torque. In the RC F and GS F, the compression ratio was increased to 12.3:1, the rev limit raised to 7,300 rpm and output 348 kW (467 bhp; 473 PS) @ 7,100 rpm and 53.8 kg⋅m (389 lb⋅ft; 528 N⋅m) of torque at 4,800-5,600 rpm. The engine received a further increase in power to 351 kW (471 bhp; 477 PS) @ 7,100 rpm and 55.1 kg⋅m (399 lb⋅ft; 540 N⋅m) of torque at 4,800 rpm in the LC and 354 kW (475 bhp; 481 PS) @ 7,100 rpm and 54.6 kg⋅m (395 lb⋅ft; 535 N⋅m) of torque at 4,800 rpm in the 2019 RC F. Although since 2018, the RC F received a power decrease to 341 kW (457 bhp; 464 PS) in European markets.
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Toyota UR engine
The Toyota UR engine family is a 32-valve dual overhead camshaft V8 piston engine series which was first introduced in 2006, as the UZ series it replaced began phasing out. Production started with the 1UR-FSE engine with D-4S direct injection for the 2007 Lexus LS. The series launched with a die-cast aluminum engine block, aluminum cylinder heads and magnesium cylinder head covers. All UR engines feature variable valve timing for both intake and exhaust cams or Dual VVT-i. Timing chains are used to drive the camshafts. The UR engine has been produced in 4.6, 5.0, and 5.7-liter displacement versions.
The 1UR-FSE V8 engine, introduced with the Lexus LS 460 & LS 460 L luxury sedans in 2006 has a 4.6 L (4,608 cc) displacement, which it gets from a bore and stroke of 94 mm × 83 mm (3.70 in × 3.27 in). The engine includes D-4S direct injection and dual VVT-iE producing 385 hp (287 kW; 390 PS) at 6,400 rpm and 51 kg⋅m (500 N⋅m; 369 lb⋅ft) at 4,100 rpm. The maximum engine speed is 6,800 RPM.
1UR-FSE undergoes X-ray inspection and a CT scan to ensure minimal deformation after the die-casting process. Camshafts are hollow to minimize weight.
Applications:
The 1UR-FE is based on the 1UR-FSE but lacks the D-4S direct injection technology. Originally used for Lexus vehicles in the Middle East, it was introduced in 2010 in other markets to replace the 2UZ-FE engine in truck and SUV applications. This engine produces 322 hp (240 kW; 326 PS) at 6,900 rpm and 46.9 kg⋅m (460 N⋅m; 339 lb⋅ft) at 4,400 rpm in the Lexus GS and LS. For the Toyota Land Cruiser and Lexus GX the engine produces 304 hp (227 kW; 308 PS) at 5,900 rpm and 44.8 kg⋅m (439 N⋅m; 324 lb⋅ft) at 3,800 rpm.
Applications:
The 2UR-GSE is a 5.0 L; 303.2 cu in (4,969 cc) naturally aspirated V8 engine fitted to the Lexus IS F, RC F, GS F, LC 500, and IS 500. It is an all-alloy DOHC, 4 valves per cylinder with Yamaha-designed high-flow cylinder heads, titanium inlet valves, high-lift camshafts and dual-length intake. It has D-4S gasoline port and direct injection, Dual VVT-i with electric VVT-iE inlet camshaft actuation. Bore and stroke is 94 mm × 89.5 mm (3.70 in × 3.52 in). The engine's redline was increased with each iteration, ranging from 6,800 rpm to 7,300 rpm. The South Africa-based Gazoo Racing SA Toyota Hilux Dakar truck also utilizes the engine. The Lexus RCF GT3 utilizes a re-stroked version of this engine which displaces 5.4 liters and makes 373 kW (500 bhp; 507 PS).
In the IS F, the engine had an 11.8:1 compression ratio and produced 310 kW (416 bhp; 421 PS) @ 6,600 rpm and 51.3 kg⋅m (371 lb⋅ft; 503 N⋅m) @ 5,200 rpm of torque. In the RC F and GS F, the compression ratio was increased to 12.3:1, the rev limit raised to 7,300 rpm and output 348 kW (467 bhp; 473 PS) @ 7,100 rpm and 53.8 kg⋅m (389 lb⋅ft; 528 N⋅m) of torque at 4,800-5,600 rpm. The engine received a further increase in power to 351 kW (471 bhp; 477 PS) @ 7,100 rpm and 55.1 kg⋅m (399 lb⋅ft; 540 N⋅m) of torque at 4,800 rpm in the LC and 354 kW (475 bhp; 481 PS) @ 7,100 rpm and 54.6 kg⋅m (395 lb⋅ft; 535 N⋅m) of torque at 4,800 rpm in the 2019 RC F. Although since 2018, the RC F received a power decrease to 341 kW (457 bhp; 464 PS) in European markets.
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