SU Carb
Unlike the cars of today that are all on an Atkins diet (no carbs), older cars had some elegant designs for fuel efficiency of their day.
This Skinner's Union carb is one of 3 'jugs' on an Austin-Healey 3000 MkII straight six. What made it unique is the variable venturi piston to control a tapered needle valve for adjusting the mixture according to vacuum pressure in the manifold. They work quite well. Similar carbs appeared on Volvos, MGs, Mercedes, and many others.
The Honda 600 carb is similar but uses a diaphram instead of a piston (like a Stromberg).
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