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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.〔(【引用サイトリンク】title=The Toyota UZ-series Engine Guide ) 〕 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). ==1UZ-FE== The 4.0 L () 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 and stroke of .〔 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).〔 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 and torque of . 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 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. Applications:〔(Ward's article )〕 * 1989–2000 Lexus LS 400/Toyota Celsior * 1989–2002 Toyota Crown/Toyota Crown Majesta * 1991–2000 Lexus SC 400/Toyota Soarer * 1992–2000 Lexus GS 400/Toyota Aristo * Toyota MR2 Le Mans Car 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Toyota UZ engine」の詳細全文を読む スポンサード リンク
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