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Origins
Having sold Maserati and served out their agreement, the surviving brothers founded OSCA in Bologna in 1947 to build what they actually loved: small-displacement racing cars of watchmaker quality. The MT4 — Maserati Tipo 4-cylinder — carried twin-cam engines from 1.1 to 1.5 litres in a light tubular chassis under slim barchetta bodywork, and spent a decade humiliating larger machinery. Its immortal result came at Sebring in 1954, when Stirling Moss and Bill Lloyd won the 12 Hours outright against works Lancias and Aston Martins — a 1.5-litre car beating the world. Around 80 MT4s were built for gentleman racers who wanted the brothers' craftsmanship without a corporation attached. OSCA never chased scale; it chased precision, and the MT4 is where precision won heaviest.
1955 Osca MT4 Morelli Spider · Rex Graycropped and faces blurred by Mr.choppers · CC BY-SA 2.0
