Stabilized engine casting core assembly, method for making an engine body, and engine body formed thereby

A method of casting an engine block, the method comprising:

• casting a cylinder block portion including a plurality of cylinder block openings disposed therein;
• casting a cylinder block flange portion positioned at a top of the cylinder block portion, the cylinder block flange portion configured for coupling the cylinder block to a cylinder head;
• and
• casting a cylinder block crankcase portion disposed at a base of the cylinder block, the cylinder block portion casted to include:
• a plurality of cylinder block walls extending between the cylinder block flange portion and the cylinder block crankcase portion and positioned about the plurality of cylinder block openings, and
• at least one internal channel formed directly on and extending circumferentially about at least a portion of a circumferential portion of each cylinder block opening within the plurality of cylinder block walls, the at least one internal channel formed by a plurality of core sections having one or more core prints connecting the core sections;
• washing at least one internal channel without machining the block;
• and
• causing coolant to flow within the at least one internal channel without machining.

A method of manufacturing an engine block assembly, the method comprising

• providing a mold for the engine block assembly, the mold including a plurality of cylinder barrel core sections, each cylinder barrel core section of the plurality of cylinder barrel core sections including one or more prints configured to remain within the engine block assembly, the one or more prints extending circumferentially from each cylinder barrel core section in the plurality of cylinder barrel core sections and the one or more prints connecting the cylinder barrel core from which the one or more prints extends to an adjacent cylinder barrel core section;
• and
• casting a molten material in the mold and about the plurality of cylinder barrel core sections such that an engine block is formed having a plurality of cylinder block walls extending between a cylinder block flange portion and a cylinder block crankcase portion, the cylinder block walls positioned about a plurality of cylinder block openings, the plurality of cylinder block walls housing a plurality of internal channels,
• wherein the plurality of cylinder block walls void of one or more holes extend through at least one of the cylinder block walls in the plurality of cylinder block walls from outside of the cylinder block and into an interior volume of the cylinder block.