Bmw s70 3
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We Say Bis Später to the Bavarian Bent Dozen With This Look Back Over 35 Years of BMW Vs
It won Le Mans twice. It powered the McLaren F1, perhaps the most lauded road car in history. James Bond drove one. And later this year, the BMW V will get the axe after 35 years of schlepping some of Europe&#;s most luxurious automobiles. It hardly remained the same engine over the decades, though, so let&#;s take a look at the many version of the Bavarian dozenport and how it became the high-tech wonder it is today.
Fifty years ago, Vs belonged squarely in the domain of exotic Italian supercars, racing machines, and the odd truck. Lamborghini, that bastion of cylinder automobiles, had not long before introduced the groundbreaking Miura, and Formula One saw a brief V arms race during the latter half of the Sixties. While some automakers &#; most notably Cadillac &#; had considered re-introducing the V in the Sixties, Lincoln remained the last automaker to offer an engine of the type in a luxury car when it discontinued the flathead V in
That is, until Jaguar debuted its all-aluminum liter V in the E-Type. The single-overhead-camshaft engine eventually proved its worth by powering much o
BMW M70
Reciprocating internal combustion engine
The BMWM70 is a naturally-aspirated, SOHC, V12petrol engine, which was BMW's first production V12[1] and was produced from to It was also the first German cylinder post-war automobile engine, predating Mercedes-Benz's M by four years and VAG's W12 by fourteen.
The BMW S70/2 engine, largely unrelated to the M70 and S70B56 engines, is a naturally-aspirated, DOHC, V12 petrol engine, which powered the to McLaren F1.
Design
[edit]The M70's design is similar to that of two L M20 straight-six engines joined at a degree angle,[2] due to the following features: single overhead camshaft valvetrain, bore spacing of 91&#;mm (&#;in), bore of 84&#;mm (&#;in), stroke of 75&#;mm (&#;in), and a compression ratio of [3]
The M70 has the following differences with the M20 engine:
The M70 has two Motronic [7]ECUs (one for each cylinder bank). To provide redundancy, the M70 also has two fuel pumps, fuel rails, distributors, mass air flow sensors, crankshaft position sensors, coolant temperature sensors and throttle bodies.[8]
Some M70 engines (such as fitted to the E32 iL Highline) ar