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[2] on Euston Road, London,[citation needed])The business having been acquired in 1926 by W. R. Morris[citation needed] they were widely used in his Morris and MG) products and other British (Rolls-Royce, Bentley, Rover, 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, they differ to the extent that needles (see below) are the only part that fits both.
adrian pym photography 
15 Responses to “Twin SU’s”
I had a MG-B many years ago with twin SU’s, what a pain they were to synchronize 😦 Great shot Adrian 😀
Thank Joe. Never owned an MG and wouldn’t know how to sync carbs.
You don’t need to be a petrol-head to admire an interesting composition in B & W.
Thanks Vicki
Nice 😊
Thanks Mark
Powerful in more ways than one.
Thanks David
Smashing black and white Adrian!
Cheers Adrian
That looks great in good ol’ B&W
Thanks Andy
Ummm … I don’t know what an SU is (I could google it, I suppose), but I love the photo!!
It’s a brand of 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[2] on Euston Road, London,[citation needed])The business having been acquired in 1926 by W. R. Morris[citation needed] they were widely used in his Morris and MG) products and other British (Rolls-Royce, Bentley, Rover, 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, they differ to the extent that needles (see below) are the only part that fits both.
Thanks Wikipedia