Component for governing air flow in and around cylinder head port

A component for implementation in a port within a cylinder head of an internal combustion engine, wherein the port includes an abrupt transition region, the component comprising:

• means for protruding into the port of the cylinder head to at least a point that is proximate the abrupt transition region and limiting stalling of a flow of air-fuel mixture within the port that otherwise would occur as the air-fuel mixture flowed along the abrupt transition region.

A component for implementation in a passage within a cylinder head of an internal combustion engine, wherein the passage includes an abrupt transition region, the component comprising:

• a device that is fixed in relation to the cylinder head and protrudes into the passage so that flow along the abrupt transition region proceeds with less stalling than would otherwise occur if the device were absent.

A component for implementation between a cylinder head and a carburetor of an engine, the component being fixed in relation to at least one of the cylinder head and the carburetor, the component comprising:

• a first portion that buffers the cylinder head and the carburetor with respect to one another in order to limit heat transfer therebetween, and
• a second portion that limits air flow from the cylinder head toward the carburetor and directs at least some air flow from a fan of the engine toward the cylinder head rather than toward the carburetor.