Final answer:
The acceptability of cylinder block deck warpage depends on the manufacturer's specifications and the context of the engine's use. A common industry standard without specific limits might accept warpage under 0.005 inch, but precision measurement and consideration of other factors are vital before deciding to resurface.
Step-by-step explanation:
The question relates to the acceptable level of warpage in a cylinder block deck, a critical aspect of engine reassembly in the automotive industry. Statement A suggests that without manufacturer specifications, a warpage under 0.005 inch is acceptable, while Statement B asserts that if warpage exceeds 0.001 inch, the block must be resurfaced. This raises an important point in engine reconditioning: the tolerance levels for warpage can vary based on the engine manufacturer and the type of engine. Often, manufacturers will provide a service limit for warpage, which must be adhered to ensure engine reliability and performance. Without specifications, a common industry practice is to allow a minimal amount of warpage, but 0.005 inch might be considered a generic standard by some technicians.
It is important to use precision tools such as a straightedge and feeler gauge to measure the warpage accurately. Resurfacing the block, often done via milling or grinding, is a process that removes a small amount of material from the deck to make it level again and is necessary if the warpage exceeds the acceptable limit. The decision to resurface depends not only on the measurement of warpage but also on other factors such as the material of the block (aluminum vs cast iron), the type of head gasket to be used, and the engine's application (performance vs daily driving).
Neither statement provides a one-size-fits-all answer because it is contingent on the manufacturer's specifications and observed conditions. Technicians must always refer to the latest service information for the specific engine being worked on.