What does Su mean in carburetor?

Skinners Union
The initials S.U. stand for Skinners Union. From these beginnings the S.U. Company grew into one of the major manufacturers of car fuel systems and components in Europe, its carburetters being widely used on both touring and competition vehicles.

Are SU carburetors still made?

In 1996, the name and rights were acquired by Burlen Fuel Systems Limited of Salisbury, which incorporated an entirely new company with the name The S.U. Carburetter Company Limited, which continues to manufacture carburettors, pumps and components, mainly for the classic car market.

What is an SU carburetor?

The SU is about as simple as a carb can get: it has very few moving parts, usually only one fuel circuit, and far fewer springs, balls and other complicated pieces than conventional carburetors. All carburetors make use of the venturi principle.

How much does it cost to rebuild a Susu carb?

SU carbs are pretty easy to rebuild as there are relatively few parts. Additionally, there are many competent rebuilders who can bring these carbs back to as-new condition for a reasonable fee–figure $50 to $75 to rebush each carb’s throttle shaft and $350 to $500 to completely rebuild a pair.

Can a type H-4 carburetor be rebuilt?

Today’s post describes a recent rebuild on a pair of SU Type H-4 carburetors. Although most Type H-4 carbs that I rebuild are for Volvo B16 engines (PV-444s and 544s), this particular pair of carbs came from an MGA.

What is a variable venturi carburetor (Su)?

Hence, the SU is called a variable venturi carburetor and is grouped with those built by Stromberg, Predator and Amal. In the center of the venturi is a piston with a tapered needle affixed to its bottom side. The piston has holes positioned in it so that as air is sucked through the venturi, vacuum above the piston makes it rise.