EJCP.PARTS

TOYOTA 4.0 1UZ-FE

The 4.0 L (3,969 cc or 242.2 cu in) all-alloy 1UZ-FE debuted in 1989 in the first generation Lexus LS 400/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 (3.44 in) and stroke of 82.5 mm (3.25 in).[1] 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 had not been planned. In its standard, original trim with 10:1 compression, power output is 191 kW (256 hp), torque of 353 N·m (260 lb·ft).[1] 1UZ-FE 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 (261 hp) and torque of 363 N·m (268 lb·ft). In 1997, Toyota's VVT-i variable valve timing technology was introduced along with a further compression ratio increase to 10.5:1,[1] bumping power and torque to 216 kW (290 hp) and 407 N·m (300 lb·ft). In the GS400 application, output was rated at 300 hp and 310 lb·ft of torque. The 1UZ-FE was voted to the Ward's 10 Best Engines list for 1998 through 2000[WIKI]

SIZES BLOCK MATERIAL HEAD MATERIAL CAM TYPE FUEL SYSTEM
4.0 ALUMINUM ALUMINUM DOHC MPFI

ITEMS

BRACKETS EXHAUST MANIFOLD INTAKE MANIFOLD OIL PAN PISTON
SENSORS TIMING COVER TIMING SET VALVE COVER VALVE INFORMATION

LISTING TEMPLATES

SIZES COMPATABILITY ENGINE TEMP HEAD TEMP CRANK TEMP NOTES
4.0 1UZFE 90-94 LS400 **** **** **** CALI EMMISIONS
4.0 1UZFE 90-97 LS400 SC400 **** **** **** FED
4.0 1UZFE 92-97 GS400
SC400
**** **** **** CALI FOR SC400
4.0 1UZFE 98-00 GS400 **** **** **** ****

VALVE INFORMATION

MAKE MODEL YEAR RANGE
LEXUS GS400 1998-2000
LEXUS GS430 2001-2007
LEXUS GX470 2003-2009
LEXUS LS400 1997-2000
LEXUS LS430 2001-2006
LEXUS LX470 1998-2007
LEXUS SC400 1997-2000
LEXUS SC430 2002-2010
TOYOTA 4RUNNER 2003-2009
TOYOTA LAND CRUISER 1998-2007
TOYOTA SEQUOIA 2001-2009
TOYOTA TUNDRA 2000-2009
TYPE HEAD DIAMETER STEM DIAMETER O.A.L. GROOVES LOCATION
EXHAUST 29 5.5 95.1 1 *TOY40AU
INTAKE 34.6 5.5 95.3 1 *TOY40AU

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