The complexity of an engine's cylinder head(s) is realized when you consider the multiple functions that must be satisfied. Among them are the provision of efficient intake and exhaust passages, a combustion space that optimizes power, a cooling "jacket" (except in high-demand racing cylinder heads) that enables temperature control, gasket sealing surfaces that accommodate high pressure combustion forces, attachment points for other major components (intake and exhaust manifolds) and a bolt pattern into the cylinder block that aids cylinder bore concentricity under a wide variety of stressful conditions.
Other than that, the objectives of cylinder heads are a piece of cake!
Interview: Bob Hudgins
Owner of CNC Cylinder
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