Triumph Sabrina engine

The Triumph Sabrina is a high-performance inline-four racing engine developed in England in the late 1950s by the Triumph Motor Company division of the Standard Motor Company. Its development name was 20X, and its two prominent front-facing domical camshaft end covers earned the nickname Sabrina, which later became its official name. It has dual overhead camshafts, a five-bearing crankshaft, hemispherical combustion chambers and a displacement of 1,985 cc. The engine powered the Triumph TR3S and TRS cars that Triumph entered at the 24 Hours of Le Mans in 1959, 1960 and 1961, and it was considered for a production road car before the cost of building it in volume ended that plan. A single Sabrina-powered Triumph Conrero was also built in the early 1960s.