Air fuel inlet for vehicle IC engine - has spacer between carburettor and manifold with spaced annular recesses in passage sidewalls

摘要

The device for use between a carburetor and an intake manifold of an IC engine is a spacer positionable between the base of the carburetor and the inlet of the manifold. One or more passages through the spaces provide for aligned communication between the carburetor outlet and the manifold inlet. The wall surface of each passage is formed with spaced parallel annular recesses. The spacer is one inch thick, and each passage has an inner dia. equal to the dia. of the corresponding carburetor outlet. The recesses formed in the wall surface of the passage are spaced parallel grooves perpendicular to the axis of the passage. The grooves are square in cross section with a width and epth of 1/16 inch, and a spacing along the length of the passage of 1/16 inch.