SU Carburettor

SU carburettors were a brand of carburettor of the sidedraught constant depression type. A handful of downdraught variants were used on some pre-war cars.

SU was named for Skinners Union, the business that produced them. Skinners Union was founded in 1905 by brothers George and Thomas Skinner in Euston Road, London,)The business having been acquired in 1926 by W. R. Morris they were widely used in his Morris and MG products and other British (Rolls-Royce, Bentley, Rover, Riley, Turner, Austin, Jaguar, Triumph) and Swedish (Volvo, Saab 99) automobiles for much of the twentieth century. Originally designed and patented by George Herbert Skinner in 1905, they remained on production cars through to 1993 in the Mini and the Maestro by which time they had become part of the Rover Group. They are now manufactured by Burlen Fuel Systems Limited mainly for the classic car market. Hitachi also built carburettors based on the SU design which were used on the Datsun 240Z, Datsun 260Z and other Datsun Cars. While these appear the same, only their needles are interchangeable.