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Refresh vs Rebuild

Engine Building Fundamentals

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Discussion and questions related to the course Engine Building Fundamentals

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What is the common understanding of the difference between an engine refresh and an engine rebuild?

Often a refresh is just a top-end (valves, rings ,or other particular items that might life out more frequently like chain tensioners). A rebuild usually involves complete disassembly, measuring and replacing all components out of spec, and reassembling.

For the detailed answer, talk specifics with the engine builder or supplier.