Abstract: An engine cylinder block having a shallow water jacket in either a V-type, in-line, or opposed engine configuration. The engine cylinder block further having an isolation chamber below the shallow water jacket forming a cavity between the cylinder bore walls and the outer engine block wall. Additionally, ventilation passages are located between the crankcase and isolation chamber through the upper crankcase plate.

Abstract: An apparatus is disclosed for an evaporative pattern assembly for metal castings and associated cast metal feeding, the assembly comprising: (a) a central upright sprue; (b) a plurality of sprue branches integral with and extending radially away from said central sprue at each of at least two axial locations of the central sprue; (c) at least two gating rails, each integrally connected with the extremities of at least two sprue branches extending from different axial locations of the central sprue, each rail being connected to different and independent sprue branches so as to be supported in circumferentially-spaced positions relative to each other about said sprue; and (d) at least one pattern body integrally connected across two of said gating rails. Preferably, the body is complex in configuration having a plurality of projections connected to said rails by gates.