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Hey all ... I was at my BMW mechanic's for a school inspection recently, and he had an engine open for a head rebuild. The head was removed, all the cams and valves were on a table, and the cylinders were exposed. So: if all this is "head work," what does it mean when someone says that their "bottom end" might need work in due time? (Or when someone says an engine's top end has a reputation for reliability, but the bottom end is notorious for failure?)
Is the bottom end essentially just the block itself, or do the comments pertain to specific moving-parts assemblies? And what specific work is involved in "bottom-end" work?
Thanks!
Is the bottom end essentially just the block itself, or do the comments pertain to specific moving-parts assemblies? And what specific work is involved in "bottom-end" work?
Thanks!