To reinterate: No water or oil should go through any openings in the>>head gasket. The only holes in the head gasket should be cylinder>>bore holes and cylinder bolt holes. Instead, the block and head>>should be two separate, closed systems for coolant. The radiator,>>pump and thermostat all stay the same as it is now. But, water does>>not flow vertically from block to head. Instead, the coolant flows>>from the front to the rear of the block, exits the block and enters an>>external manifold. >