Variable-venturi carburetorspeedrevJune 4, 2024 « Back to Glossary Index Carburetor with vacuum-operated piston adjusting venturi cross-sectional area. Moves jet needle in and out of needle jet. Typical designs include SU and Stromberg carburetors. Related Articles: Glossary: Variable-choke carburetorGlossary: VV carburetor« Back to Glossary Index