Toyota UZ engine
Encyclopedia
The Toyota UZ engine family is a 32-valve
quad-camshaft V8 piston engine series used in Toyota's luxury offerings and sport utility vehicles. Three basic versions have been produced, the 1UZ-FE, 2UZ-FE, and 3UZ-FE. The UZ series was mostly replaced by the UR
series but the 3UZ-FE continues to be produced for the current model Crown Majesta 4WD (Japanese market only).
/Toyota Celsior and the engine was progressively released across a number of other models in the Toyota/Lexus range. The engine is oversquare by design, with a bore size of 87.5 mm (3.4 in) and stroke of 82.5 mm (3.2 in). It has proved to be a strong, reliable and smooth powerplant with features such as 6-bolt main bearings and belt-driven quad-camshafts. The water pump is also driven by the cam belt. The connecting rods and crankshaft are constructed of steel. The pistons are hypereutectic
.
Its resemblance to a race engine platform (6 bolt cross mains and over square configuration) was confirmed in 2007 by David Currier (in an interview with v-eight.com), vice president of TRD USA, stating that the 1UZ platform was based on CART/IRL engine design. It was planned to be used on GT500 vehicles, however its subsequent use in the Daytona Prototype use was not planned.
In its standard, original trim with 10:1 compression, power output is 191 kW (256 hp), torque of 353 N·m (260 ft·lbf).
The engine was slightly revised in 1995 with lighter connecting rods and pistons and an increased compression ratio to 10.4:1 resulting in peak power of 195 kW and torque of 363 newton metre.
In 1997, Toyota's VVT-i variable valve timing technology
was introduced along with a further compression ratio increase to 10.5:1, bumping power and torque to 216 kW (290 hp) and 407 N·m (300 ft·lbf). In the GS400 application, output was rated at 300 hp and 310 ft-lb of torque.
The 1UZ-FE was voted to the Ward's 10 Best Engines
list for 1998 through 2000.
Applications:
The 2UZ-FE was a 4.7 L (4664 cc) version built in Tahara, Aichi
, Japan
and at Toyota Motor Manufacturing Alabama
. Unlike its other UZ counterparts, this version uses a cast iron block to increase durability, as it was designed for low-reving, high-torque pickup and SUV applications. Its bore is 94 mm (3.7 in) and stroke is 84 mm (3.3 in). Output varies by implementation, but one VVT-i variant produces 202 kW (271 hp) at 4800 rpm with 427 N·m (315 ft·lbf) of torque at 3400 rpm. JDM versions produce 173 kW at 4800 rpm and 422 N·m (311.3 ft·lbf) at 3600 rpm, while Australian models produce 170 kW at 4800 rpm and 410 N·m (302.4 ft·lbf) at 3600 rpm.
Like the 1UZ-FE it has aluminum DOHC cylinder heads, MFI fuel injection
, 4 valves per cylinder with bucket tappets, one-piece cast camshafts, and a cast aluminum intake manifold. For 2010, it was replaced by the 1UR-FE in all applications.
Applications:
Toyota Racing Development
offered a bolt-on supercharger kit for the 2000-2003 Tundra and the 2003 GX 470.
Another 2UZ-FE variation adds VVT-i
and electronic throttle control
.
Applications:
The 3UZ-FE, is a 4.3 L (4292 cc) version built in Japan
. Bore is 91 mm (3.6 in)
and stroke is 82.5 mm (3.2 in). Output is 216 to 224 kW (290 to 300 hp) at 5600 rpm with 441 N·m (325 ft·lbf) of torque at 3400 rpm. It has an aluminum engine block and aluminum DOHC cylinder heads. It uses SEFI fuel injection
, has 4 valves per cylinder with VVT-i
. In 2003, the engine was linked to a six-speed automatic in applications with improved fuel efficiency.
A 5.2L version replaced the 3S-GTE as the engine used in Toyota's 500hp (370kw) Super GT
race cars up to 2009 and a 5.0L version was used in the Grand American Road Racing (Grand Am) Series.
Applications:
granted production certification for the FV2400-2TC, a twin-turbocharged airplane powerplant based on the UZ series Lexus engine. The 360 hp FV2400 was developed in partnership with Hamilton Standard
, which provided the digital engine-control system. The goal was to produce a four-seat propeller aircraft.
In 1998, a marine derivative of the UZ powerplant was produced for boating applications. The 4.0 L VT300i engine, producing 300 hp at 6000 rpm and 310 ft·lbf (420.3 N·m) at 4200 rpm, used the same block as the UZ engine on the Lexus SC 400, GS 400, and LS 400. The marine engine was used on the Toyota Epic waterski boat.
Multi-valve
In automotive engineering a multi-valve or multivalve engine is one where each cylinder has more than two valves. A multi-valve engine has better breathing and can operate at higher revolutions per minute than a two-valve engine, delivering more power.- Multi-valve rationale :A multi-valve design...
quad-camshaft V8 piston engine series used in Toyota's luxury offerings and sport utility vehicles. Three basic versions have been produced, the 1UZ-FE, 2UZ-FE, and 3UZ-FE. The UZ series was mostly replaced by the UR
Toyota UR engine
The Toyota UR engine family is a 32-valve quad-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 D4-S direct injection for the 2007 Lexus LS. The series launched with a die-cast...
series but the 3UZ-FE continues to be produced for the current model Crown Majesta 4WD (Japanese market only).
1UZ-FE
The 4.0 L (3968 cc) all-alloy 1UZ-FE debuted in 1989 in the first generation Lexus LS 400Lexus LS
The Lexus LS is a full-size luxury sedan that serves as the flagship model of Lexus, the luxury division of Toyota. Four generations of the sedan have been produced, all equipped with V8 engines and rear-wheel drive, although since 2006 all-wheel drive, hybrid, and long-wheelbase variants have also...
/Toyota Celsior and the engine was progressively released across a number of other models in the Toyota/Lexus range. The engine is oversquare by design, with a bore size of 87.5 mm (3.4 in) and stroke of 82.5 mm (3.2 in). It has proved to be a strong, reliable and smooth powerplant with features such as 6-bolt main bearings and belt-driven quad-camshafts. The water pump is also driven by the cam belt. The connecting rods and crankshaft are constructed of steel. The pistons are hypereutectic
Hypereutectic piston
A hypereutectic piston is an internal combustion engine piston cast using a hypereutectic alloy–that is, a metallic alloy which has a composition beyond the eutectic point. Hypereutectic pistons are made of an aluminum alloy which has much more silicon present than is soluble in aluminum at the...
.
Its resemblance to a race engine platform (6 bolt cross mains and over square configuration) was confirmed in 2007 by David Currier (in an interview with v-eight.com), vice president of TRD USA, stating that the 1UZ platform was based on CART/IRL engine design. It was planned to be used on GT500 vehicles, however its subsequent use in the Daytona Prototype use was not planned.
In its standard, original trim with 10:1 compression, power output is 191 kW (256 hp), torque of 353 N·m (260 ft·lbf).
In 1997, Toyota's VVT-i variable valve timing technology
VVT-i
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota, similar in performance to the BMW's VANOS. The Toyota VVT-i system replaces the Toyota VVT offered starting in 24 December 1991 on the 5-valve per cylinder 4A-GE engine. The...
was introduced along with a further compression ratio increase to 10.5:1, bumping power and torque to 216 kW (290 hp) and 407 N·m (300 ft·lbf). In the GS400 application, output was rated at 300 hp and 310 ft-lb of torque.
The 1UZ-FE was voted to the Ward's 10 Best Engines
Ward's 10 Best Engines
Ward's 10 Best Engines is an annual list of the ten "best" automobile engines available in the U.S. market, that are selected by Ward's AutoWorld magazine. The list was started in 1994, and has been drawn every year since then....
list for 1998 through 2000.
Applications:
- 1989–2000 Lexus LS 400/Toyota CelsiorLexus LSThe Lexus LS is a full-size luxury sedan that serves as the flagship model of Lexus, the luxury division of Toyota. Four generations of the sedan have been produced, all equipped with V8 engines and rear-wheel drive, although since 2006 all-wheel drive, hybrid, and long-wheelbase variants have also...
- 1990–2002 Toyota CrownToyota CrownThe Toyota Crown is a line of full-size luxury sedans by Toyota. The range was primarily available in Japan and some other Asian countries, originally designed to serve as a taxi...
/Toyota Crown MajestaToyota Crown MajestaThe Toyota Crown Majesta is a full-size premium luxury automobile. The Toyota Crown Majesta shares a stretched variant of the UZS platform series from the smaller Toyota Crown and Lexus GS/Toyota Aristo, however, it is not just a upper trim level of the Crown sedan, the Majesta is a separate car... - 1991–2000 Lexus SC 400Lexus SCThe Lexus SC is a personal luxury coupé that was retailed by Lexus, and built from 1991 through 2010. It features a front engine, rear-wheel drive design and seating for up to four passengers. The first generation SC debuted as the V8-powered SC 400 in 1991, and the I6-powered SC 300 was added in...
/Toyota SoarerToyota SoarerThe Soarer made its first appearance at the 1980 Osaka International Motor Show with the name "EX-8", and the Z10 series Toyota Soarer was produced from February 1981 to December 1985, with 2.0L, 2.8L or 3.0L DOHC I-6 variants. The first generation Soarer debuted with a rear-wheel drive... - 1992–2000 Lexus GS 400/Toyota AristoLexus GSThe Lexus GS is a series of mid-size luxury sports sedans / executive cars sold by Lexus since 1993. Designed to fill the gap between the ES and LS, and to provide Lexus with a performance sedan to compete in the mid-luxury class, three generations of the GS have been produced to date...
- Toyota MR2Toyota MR2The Toyota MR2 is a two-seat, mid-engined, rear wheel drive sports car produced by Central Motors, a part of Toyota, from 1984 until July 2007 when production stopped in Japan...
Le Mans Car
2UZ-FE
Tahara, Aichi
is a city located in Aichi Prefecture, Japan. As of August 2011, the city had an estimated population of 63,886 and a population density of 338 persons per km². The total area was 188.81 km².-Geography:...
, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
and at Toyota Motor Manufacturing Alabama
Toyota Motor Manufacturing Alabama
Toyota Motor Manufacturing, Alabama, Inc. is a truck engine factory near Huntsville, Alabama, United States. It is owned and operated by Toyota Motor Corporation of Japan...
. Unlike its other UZ counterparts, this version uses a cast iron block to increase durability, as it was designed for low-reving, high-torque pickup and SUV applications. Its bore is 94 mm (3.7 in) and stroke is 84 mm (3.3 in). Output varies by implementation, but one VVT-i variant produces 202 kW (271 hp) at 4800 rpm with 427 N·m (315 ft·lbf) of torque at 3400 rpm. JDM versions produce 173 kW at 4800 rpm and 422 N·m (311.3 ft·lbf) at 3600 rpm, while Australian models produce 170 kW at 4800 rpm and 410 N·m (302.4 ft·lbf) at 3600 rpm.
Like the 1UZ-FE it has aluminum DOHC cylinder heads, MFI fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....
, 4 valves per cylinder with bucket tappets, one-piece cast camshafts, and a cast aluminum intake manifold. For 2010, it was replaced by the 1UR-FE in all applications.
Applications:
- 2003–2004 Lexus GX 470Lexus GXThe Lexus GX is a mid-size sport utility vehicle sold in North American and Eurasian markets by Lexus. The first generation GX 470 was introduced at the North American International Auto Show in 2002 as a 2003 model, and subsequently became the third SUV to enter Lexus' lineup. The 4.7 L V8...
- 1998–2005 Lexus LX 470Lexus LXThe Lexus LX is a full-size sport utility vehicle sold by Lexus since 1996. Three generations of the Lexus LX have been produced, all based heavily on the long-running Toyota Land Cruiser series of SUVs. The first generation LX 450 debuted in 1996 as Lexus' first entry into the SUV market. Its...
- 1998–2005 Toyota Land CruiserToyota Land CruiserThe is a series of four-wheel drive vehicles produced by the Japanese car maker Toyota Motor Corporation. It is not related to the Studebaker Land Cruiser car produced in the US from 1934-1954....
- 2003–2004 Toyota 4RunnerToyota 4RunnerThe Toyota 4Runner is a mid-size SUV manufactured by Toyota and sold throughout the world from 1984 to the present. In Japan it was known as the Toyota Hilux Surf...
- 2000–2004 Toyota TundraToyota TundraThe Toyota Tundra is a full-size pickup truck introduced by Toyota in the year 2000. It was widely considered to be the first full-size import-brand truck built with an American look and feel and a refined V8 engine. The Tundra was eventually nominated for the North American Truck of the Year...
- 2001–2004 Toyota SequoiaToyota SequoiaThe Toyota Sequoia is a full-size SUV produced by Toyota Motor Manufacturing Indiana in Princeton, Indiana. It is derived from the Toyota Tundra pickup truck but differs in its use of an independent rear suspension. It is priced between the mid-size 4Runner and Toyota's flagship Land Cruiser...
Toyota Racing Development
Toyota Racing Development
Toyota Racing Development or TRD is the in-house tuning shop for all Toyota, Lexus, and Scion cars. TRD is responsible both for improving street cars for more performance and supporting Toyota's racing interests around the world. TRD produces various tuning products and accessories, including...
offered a bolt-on supercharger kit for the 2000-2003 Tundra and the 2003 GX 470.
Another 2UZ-FE variation adds VVT-i
VVT-i
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota, similar in performance to the BMW's VANOS. The Toyota VVT-i system replaces the Toyota VVT offered starting in 24 December 1991 on the 5-valve per cylinder 4A-GE engine. The...
and electronic throttle control
Electronic throttle control
Electronic throttle control is an automobile technology which severs the mechanical link between the accelerator pedal and the throttle. Most automobiles already use a throttle position sensor to provide input to traction control, antilock brakes, fuel injection, and other systems, but use a...
.
Applications:
- 2005–2009 Lexus GX 470Lexus GXThe Lexus GX is a mid-size sport utility vehicle sold in North American and Eurasian markets by Lexus. The first generation GX 470 was introduced at the North American International Auto Show in 2002 as a 2003 model, and subsequently became the third SUV to enter Lexus' lineup. The 4.7 L V8...
- 2006–2007 Lexus LX 470Lexus LXThe Lexus LX is a full-size sport utility vehicle sold by Lexus since 1996. Three generations of the Lexus LX have been produced, all based heavily on the long-running Toyota Land Cruiser series of SUVs. The first generation LX 450 debuted in 1996 as Lexus' first entry into the SUV market. Its...
- 2005–2009 Toyota 4RunnerToyota 4RunnerThe Toyota 4Runner is a mid-size SUV manufactured by Toyota and sold throughout the world from 1984 to the present. In Japan it was known as the Toyota Hilux Surf...
- 2006–2011 Toyota Land CruiserToyota Land CruiserThe is a series of four-wheel drive vehicles produced by the Japanese car maker Toyota Motor Corporation. It is not related to the Studebaker Land Cruiser car produced in the US from 1934-1954....
- 2005–2006 Toyota TundraToyota TundraThe Toyota Tundra is a full-size pickup truck introduced by Toyota in the year 2000. It was widely considered to be the first full-size import-brand truck built with an American look and feel and a refined V8 engine. The Tundra was eventually nominated for the North American Truck of the Year...
- 2005–2009 Toyota SequoiaToyota SequoiaThe Toyota Sequoia is a full-size SUV produced by Toyota Motor Manufacturing Indiana in Princeton, Indiana. It is derived from the Toyota Tundra pickup truck but differs in its use of an independent rear suspension. It is priced between the mid-size 4Runner and Toyota's flagship Land Cruiser...
3UZ-FE
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
. Bore is 91 mm (3.6 in)
and stroke is 82.5 mm (3.2 in). Output is 216 to 224 kW (290 to 300 hp) at 5600 rpm with 441 N·m (325 ft·lbf) of torque at 3400 rpm. It has an aluminum engine block and aluminum DOHC cylinder heads. It uses SEFI fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....
, has 4 valves per cylinder with VVT-i
VVT-i
VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing technology developed by Toyota, similar in performance to the BMW's VANOS. The Toyota VVT-i system replaces the Toyota VVT offered starting in 24 December 1991 on the 5-valve per cylinder 4A-GE engine. The...
. In 2003, the engine was linked to a six-speed automatic in applications with improved fuel efficiency.
A 5.2L version replaced the 3S-GTE as the engine used in Toyota's 500hp (370kw) Super GT
Super GT
The Super GT series, formerly known as the All-Japan Grand Touring Car Championship or JGTC , is a grand touring car race series promoted by the GT-Association...
race cars up to 2009 and a 5.0L version was used in the Grand American Road Racing (Grand Am) Series.
Applications:
- Lexus LS 430Lexus LSThe Lexus LS is a full-size luxury sedan that serves as the flagship model of Lexus, the luxury division of Toyota. Four generations of the sedan have been produced, all equipped with V8 engines and rear-wheel drive, although since 2006 all-wheel drive, hybrid, and long-wheelbase variants have also...
- Lexus GS 430Lexus GSThe Lexus GS is a series of mid-size luxury sports sedans / executive cars sold by Lexus since 1993. Designed to fill the gap between the ES and LS, and to provide Lexus with a performance sedan to compete in the mid-luxury class, three generations of the GS have been produced to date...
- Lexus SC 430Lexus SCThe Lexus SC is a personal luxury coupé that was retailed by Lexus, and built from 1991 through 2010. It features a front engine, rear-wheel drive design and seating for up to four passengers. The first generation SC debuted as the V8-powered SC 400 in 1991, and the I6-powered SC 300 was added in...
/Toyota SoarerToyota SoarerThe Soarer made its first appearance at the 1980 Osaka International Motor Show with the name "EX-8", and the Z10 series Toyota Soarer was produced from February 1981 to December 1985, with 2.0L, 2.8L or 3.0L DOHC I-6 variants. The first generation Soarer debuted with a rear-wheel drive... - Toyota Crown MajestaToyota Crown MajestaThe Toyota Crown Majesta is a full-size premium luxury automobile. The Toyota Crown Majesta shares a stretched variant of the UZS platform series from the smaller Toyota Crown and Lexus GS/Toyota Aristo, however, it is not just a upper trim level of the Crown sedan, the Majesta is a separate car...
- Super GTSuper GTThe Super GT series, formerly known as the All-Japan Grand Touring Car Championship or JGTC , is a grand touring car race series promoted by the GT-Association...
- Toyota SupraToyota SupraThe Toyota Supra is a sports car/grand tourer that was produced by Toyota Motor Company from 1979 to 2002. The styling of the Toyota Supra was derived from the Toyota Celica, but it was both longer and wider. Starting in mid-1986, the Supra became its own model and was no longer based on the Celica...
GT500 Race Car - Lexus SC 430 GT500 Race Car
- Toyota Supra
Derivatives
In 1997, the US Federal Aviation AdministrationFederal Aviation Administration
The Federal Aviation Administration is the national aviation authority of the United States. An agency of the United States Department of Transportation, it has authority to regulate and oversee all aspects of civil aviation in the U.S...
granted production certification for the FV2400-2TC, a twin-turbocharged airplane powerplant based on the UZ series Lexus engine. The 360 hp FV2400 was developed in partnership with Hamilton Standard
Hamilton Standard
Hamilton Standard, an aircraft propeller parts supplier, was formed in 1929 when United Aircraft and Transport Corporation consolidated Hamilton Aero Manufacturing and Standard Steel Propeller into the Hamilton Standard Propeller Corporation. Other members of the corporation included Boeing,...
, which provided the digital engine-control system. The goal was to produce a four-seat propeller aircraft.
In 1998, a marine derivative of the UZ powerplant was produced for boating applications. The 4.0 L VT300i engine, producing 300 hp at 6000 rpm and 310 ft·lbf (420.3 N·m) at 4200 rpm, used the same block as the UZ engine on the Lexus SC 400, GS 400, and LS 400. The marine engine was used on the Toyota Epic waterski boat.