Which block design uses what is called a serpentine block wall near the crankcase area? a. Deep skirt b. Ladder frame c. Cross bolt d. Tunnel bore
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The correct answer is a. Deep skirt. In a deep skirt block design, the serpentine block wall is strategically used near the crankcase area to enhance rigidity and stability, especially under high-stress conditions. This design helps in distributing loads evenly, which is crucial for the performance and longevity of the engine. In contrast to options like ladder frame or tunnel bore, the deep skirt design stands out for its ability to accommodate larger crankshafts and improved oiling configurations. This makes it a favorite in high-performance applications, ensuring not just enhanced power, but also smoother operation and durability over time.