Abstract: A method for manufacturing a cylinder head system for a vehicle includes manufacturing a first main mold to integrally form an exhaust manifold for discharging exhaust gas from a cylinder and a first water jacket for cooling the exhaust manifold, manufacturing a second main mold to form a second water jacket for cooling a cylinder block, and connecting the first main mold to the second main mold. The mold includes a first main mold having a plurality of exhaust manifold molds and a first water jacket mold, each exhaust manifold mold being configured to form a respective exhaust manifold, and the first water jacket mold being configured to form a first water jacket for cooling the exhaust manifolds, a second main mold having a second water jacket mold, the second water jacket mold being configured to form a second water jacket for cooling a cylinder block, and the second main mold being configured to be assembled with the first main mold.

Abstract: A method for manufacturing a cylinder head system for a vehicle includes manufacturing a first main mold having an exhaust manifold mold and a first water jacket mold; manufacturing a second main mold having a second water jacket mold; and assembling the first main mold to the second main mold. The exhaust manifold mold is configured to form an exhaust manifold, the first water jacket mold is configured to form a first water jacket for cooling the exhaust manifold, and the second water jacket mold is configured to form a second water jacket for cooling a cylinder block.