Internal combustion engines

Claim 1

A CYLINDER BLOCK AND HEAD UNIT FOR USE IN AN INTERNAL COMBUSTION ENGINE, SAID UNIT COMPRISING AN INTEGRAL HEAD AND CYLINDER CASTING HAVING A PLURALITY OF ALIGNED CYLINDER BORES, A PLURALITY OF COOLING LIQUID CAVITIES EXTENDING THROUGH THE TOP AND BOTH SIDES OF SAID CASTING, AND A PLURALITY OF OPPOSITELY DIRECTED INLET AND EXHAUST PASSAGES IN ADDITION TO THE CYLINDER BORES, AND PLURALITY OF COVER MEMBERS EXTENDING THE LENGTH OF THE ENGINE, HAVING FLAT MOUNTING SURFACES, AND COVERING SAID CAVITIES AND SAID INLET PASSAGES, SAID COVER MEMBERS INCLUDING A TOP PLATE AND TWO SIDE PLATES, SAID TOP PLATE ENCLOSING THE CAVITIES IN THE TOP OF SAID CASTING AND CARRYING THE VALUE TAPPET MEANS FOR SAID ENGINE, THE FIRST OF SAID PLATES ENCLOSING AND INTERCONNECTING THE CAVITIES OPENING ADJACENT THE CORRESPONDING SIDE SURFACE OF SAID UNIT, SAID FIRST SIDE PLATE BEING PROVIDED WITH AN INLET MANIFOLD INTEGRAL THEREWITH, SAID MANIFOLD HAVING A PLURALITY OF PASSAGES REGISTERING WITH SAID INLET PASSAGES, AND THE OTHER OF SAID SIDE PLATES PROVIDING A CHANNEL INTERCONNECTING THE CAVITIES ON THE OTHER SIDE OF SAID UNIT, SAID FIRST SIDE PLATE INCLUDING OUTLET MEANS FOR SAID LIQUID, SAID OTHER SIDE PLATE INCLUDING INLET MEANS FOR SAID LIQUID.