Second venturi insert providing air/fuel mixture velocity enhancement

An venturi insert adapted to be slidably mounted within a carburetor bore, comprising:

• a curved body adapted to abut a sidewall of the carburetor bore;
• an inclined inner surface tapering toward a longitudinal axis of the carburetor bore as the inner surface progresses in a direction parallel to airflow within the carburetor bore;
• a lip, the lip being formed along a perimeter of the venturi insert so as to prevent insertion of the venturi insert into the carburetor bore beyond a desired distance;
• and
• a void region to accommodate fuel delivery and regulation components protruding into the carburetor bore.

A method of improving fuel atomization in a carburetor, comprising the steps of:

• forming a ramp within a carburetor bore downstream of a carburetor throttle plate;
• enclosing the ramp with an aerodynamic piece;
• and
• isolating airflow downstream of the carburetor throttle plate from regions of the carburetor bore not occupied by the ramp.