ターボとはサザエの意です

r3350_01

r3350_02

市販車初のターボ

1973 BMW 2002TURBO

 1973年、量販車初のターボチャージャー搭載エンジンをそのラインナップに加える。

 ボア×ストロークφ89.0×80.0mmの1,990cc水冷直列4気筒、SOHC2バルブ、圧縮比6.9のエンジンは、クーゲルフィッシャー(Kügelfischer)製の機械式インジェクションとKKK社(Kühnle Kopp und Kausch)製のBLDターボチャージャーを組み合わせ、170bhp@5,800rpm、24.5kgm@4,000rpmを発する。

1975 PORSCHE TURBO

 1973年のフランクフルトモーターショー、翌74年のパリサロンに試作車が展示される。1975年に生産に入る。

 ボア×ストロークφ95mm×70.4mmの強制空冷水平対向6気筒2,994cc、SOHC2バルブ、圧縮比6.5の930/50型エンジンは、ボッシュKEジェトロニックとブースト圧0.8気圧のKKK製ターボチャージャーを組み合わせ、260PS@5,500rpm、35.0kgm@4,500rpmを発する。

国産初のターボ

1979 NISSAN CEDRIC 430 TURBO

 日本では初めてのターボチャージャーを装着した高性能エンジンとして開発された。ボア×ストロークφ78.0×69.7mmの 総排気量の1998cc、水冷直列6気筒、SOHC2バルブ、圧縮比7.3のL20ETエンジンは、日産EGIとギャレット・エアリサーチ製のターボチャージャーを組み合わせ、145PS@5,600rpm、21.0kgm@3,200rpmを発する。

1980 BMW FUTURO (Prototype)

SPECIFICATIONS
•Engine: 785cc flat-twin four-stroke
•Power output: 75 hp @ 7250 rpm
•Valves: overhead valves
•Fuel system: Bosch K-Jetronic fuel injection and KKK turbocharger with air/air interchanger and controlled “overboost” at low speeds
•Transmission: shaft final drive
•Suspension: (front) telescopic forks; (rear) parallel-linkage swinging frame
•Brakes: (front) disc; (rear) disc
•Wheels: alloy disc
•Weight: 397 lb
•Maximum speed: 125 mph

The BMW Futuro was a one of a kind German motorcycle built in 1980. It has a flat twin, four stroke 785 cc engine; with a top speed of 125 mph (201.2 km/h).

“The Futuro was unveiled at the Cologne Show in September 1980, a show that saw the debut of the Honda CX Turbo, the Suzuki Katana and the first Yamaha V-twins. Naturally, these “real-world” machines overshadowed BMW’s “dream bike” built around the old flat-twin engine.

Turbocharger High Point

But the Futuro was worthy of better things, and the Ki, launched eight years later by BMW, was obviously indebted to it on both the aesthetic and the technical fronts. Of course, the Ki had outgrown the turbo technologies that were all the rage when the Futuro was developed, but it represented a high point in turbo development that has rarely been equalled.

Parallelogram Suspension

If the girder frame of the Futuro has not yet paid off, this show bike did mark the first use of the parallelogram rear suspension that has become commonplace on BMWs since 1987. It was in terms of style, however, that the Futuro most foreshadowed contemporary motorcycles. With its disc wheels (often found on custom machines), its saddle wrapped around the fuel tank, its rear trunk (which inspired the Honda Pacific Coast), its wraparound cowling, and its integrated rearview mirrors, it was a forecast of bike shapes for the Nineties. Though its first showing was also its last, it still cleared the way for successors.





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500turbo01

500turbo02

1981 HONDA CX500 Turbo

1982 YAMAHA XJ650 Turbo

1983 HONDA CX650 Turbo

1983 SUZUKI XN85

1984 Kawasaki GPz750 Turbo