Although the M Roadster's previous engine was still earning raves in 2000, neither BMW nor BMW M rests on its laurels. To upgrade the M models’ performance further, BMW M created a brand-new engine, called the S54. For the first time, essentially the same unit powers European and U.S. models. It is also essentially the same as that powering the new M3 models, except that the roadster’s and coupe’s snug dimensions dictate somewhat more restrictive intake and exhaust systems. The M Roadster engine delivers 315 hp and 251 lb- lbft. of torque ft. - fully 75 hp and 15 lb-ft. more than the previous engine’s output. (The M3 engine version produces 333 hp and 262 lb-ft.)
In its broad concept, the new engine, designated the S54 1, shares the familiar basic architecture of other BMW inline 6-cylinder engines. Virtually all of its engineering details, however, are unique and oriented to the very highest level of performance.
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