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The Mercedes-Benz R107 and C107 are automobiles which were produced by Mercedes-Benz from 1971 through 1989, being the second longest single series ever produced by the automaker, after the G-Class. They were sold under the SL (R107) and SLC (C107) model names as the 280 SL, 280 SLC, 300 SL, etc. up to the 560 SL. The R107 replaced the W113 SL-Class in 1971 and was replaced by the R129 SL-Class in 1989. The SLC replaced the W111 Coupé in 1971 and was replaced by the C126 S-class coupe in 1981. ==Model history== The R107 took the chassis components of the midsize Mercedes-Benz W114 model and mated them initially to the M116 and M117 V8 engines used in the W108, W109 and W111 series. The SL variant was a 2-seat convertible/roadster with standard soft top and optional hardtop and optional folding seats for the rear bench. The SLC (C107) derivative was a 2 door hardtop coupe with normal rear seats. The SLC is commonly referred to as an 'SL coupe', and this was the first time that Mercedes-Benz had based a coupe on an SL roadster platform rather than on a saloon, replacing the former saloon-based 280/300 SE coupé in Mercedes lineup. The SLC was replaced earlier than the SL, with the model run ending in 1981, with a much larger model, the 380 SEC and 500SEC based on the new S class. Volume production of the first R107 car, the 350 SL, started in April 1971 alongside the last of the W113 cars; the 350 SLC followed in October. Sales in North America began in 1972, and cars wore the name 350 SL, but had a larger 4.5L V8 (and were renamed 450 SL for model year 1973); the big V8 became available on other markets with the official introduction of the 450 SL/SLC on non-North American markets in March 1973. US cars sold from 1972 through 1975 used the Bosch D Jetronic fuel injection system, an early electronic engine management system. From July 1974 both SL and SLC could also be ordered with a fuel-injected 2.8L straight-6 as 280 SL and SLC. US models sold from 1976 through 1979 used the Bosch K Jetronic system, an entirely mechanical fuel injection system. All US models used the 4.5 liter engine, and were called 450 SL/SLC. In September 1977 the 450 SLC 5.0 joined the line. This was a special version of the big coupé, featuring a new all-aluminum five-liter V8, aluminum alloy bonnet and boot-lid, and a black rubber rear spoiler, along with a small front-lip spoiler. The 450SLC 5.0 was produced in order to homologate the SLC for the 1978 World Rally Championship. Starting in 1980, US cars were equipped with lambda control, which varied the air/fuel mixture based on feedback from an oxygen sensor. The 350, 450 and 450 SLC 5.0 models (like the 350 and 450 SL) were discontinued in 1980 with the introduction of the 380 and 500 SLC in March 1980. At the same time, the cars received a very mild makeover; the 3-speed automatic was replaced by a four-speed unit. The 280, 380 and 500 SLC were discontinued in 1981 with the introduction of the W126 series 380 and 500 SEC coupes. A total of 62,888 SLCs had been manufactured over a ten-year period of which just 1,636 were the 450 SLC-5.0 and 1,133 were the 500 SLC. Both these models are sought by collectors today. With the exception of the SL65 AMG Black Series, the SLC remains the only fixed roof Mercedes-Benz coupe based on a roadster rather than a sedan. Following the discontinuation of the SLC in September 1981, the 107 series continued initially as the 280, 380 and 500 SL. At this time, the V8 engines were re-tuned for greater efficiency, lost a few hp and consumed less fuel- this largely due to substantially higher (numerically lower) axle ratios that went from 3.27:1 to 2.47:1 for the 380 SL and from 2.72:1 to 2.27:1 for the 500 SL. From September 1985 the 280 SL was replaced by a new 300 SL, and the 380 SL by a 420 SL; the 500 SL continued and a 560 SL was introduced for certain extra-European markets, most notably the USA. Also in 1985, the Bosch KE Jetronic was fitted. The KE Jetronic system varied from the earlier, all mechanical system by the introduction of a more modern engine management "computer", which controlled idle speed, fuel rate, and air/fuel mixture. The final car of the 18 years running 107 series was a 500 SL painted Signal red, built on August 4, 1989; it currently resides in the Mercedes-Benz museum in Stuttgart, Germany. 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「Mercedes-Benz R107 and C107」の詳細全文を読む スポンサード リンク
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