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A Ferrari Berlinetta Boxer (BB) is one of a series of cars produced by Ferrari in Italy between 1973 and 1984. They used a mid-mounted flat-12 engine, replacing the FR layout Daytona, and were succeeded in the Ferrari stable by the Testarossa. It was designed by Leonardo Fioravanti. No BB was ever originally sold in North America, as Enzo did not believe it to be worth the cost of complying with the extra environmental and safety regulations. However, third parties made conversions, and quite a few of them are now in the United States. ==Background== Production of the BB was a major step for Enzo Ferrari. He felt that a mid-engined road car would be too difficult for his buyers to handle, and it took many years for his engineers to convince him to adopt the layout. This attitude began to change as the marque lost its racing dominance in the late 1950s to mid-engined competitors.The mid-engined 6- and 8-cylinder Dino racing cars were the result, and Ferrari later allowed for the production Dino road cars to use the layout as well. The company also moved its V12 engines to the rear with its P and LM racing cars, but the Daytona was launched with its engine in front. It was not until 1970 that a mid-engined 12-cylinder road car would appear. ==365 GT4 BB== The first "Boxer" was the 365 GT4 BB shown at the 1971 Turin Motor Show. Designed to rival the Lamborghini Miura and the newly developed Lamborghini Countach, it was finally released for sale in 1973 at the Paris Motor Show. 387 were built, of which 88 were right-hand drive (of which 58 for the UK market), making it the rarest of all Berlinetta Boxers. The Pininfarina-designed body followed the P6 show car with popup headlights. Though it shared its numerical designation with the Daytona, the Boxer was radically different. It was a mid-engined car like the Dino, and the now flat-12 engine was mounted longitudinally rather than transversely (as it was mounted in the Dino; the Daytona was a conventional front-engine, longitudinal design). It has which is also slightly higher than the Daytona. The engine shared its internal dimensions with the V12 from the Daytona, but was spread out to 180° as on Ferrari's 1970 Formula One car and was mounted above a five-speed manual transmission. One major difference in this engine was its use of timing belts rather than chains. Although referred to as a Boxer, the 180° V12 was not a true boxer engine, but rather a flat engine. 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「Ferrari Berlinetta Boxer」の詳細全文を読む スポンサード リンク
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