The Cylinder Head of the Nissan Versa sits atop each engine block. It closes off the combustion chambers so fuel can burn efficiently and power the wheels. Placed on top of the cylinders, the Cylinder Head contains the spark plugs, intake and exhaust passages, and coolant channels. It allows the fresh air-fuel mixture to enter and hot gases to escape the cylinders. In addition, it segregates the engine oil from the coolant. Manufacturers utilize torque to yield bolts, which upon installation stretch to their maximum capacity. This allows for uniform clamping force throughout the Cylinder Head and prevents leaks that would cause misfires, overheating, or oil-coolant contamination. Over time, the parts inside the Cylinder Head will wear so that compression is lost or there are dead cylinders. Also, cracks or warpage can allow these gases to escape. Over the years of the Versa, Nissan has applied two styles of material on its little powerplants, a heavy cast iron type and a lighter aluminum type. Cast iron is damage resistant and weighty, while an aluminum Cylinder Head is lighter, disperses heat quicker, and allows higher compression which improves performance. Regardless of the style of Versa you have, preserving the Cylinder Head will help the small car have a reliable spark, airflow, and temperature control. Furthermore, that will prevent Nissan drivers from incurring costly issues.
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