have an m20b25 that i have just pulled out of my personal 1987 325is. It has a bit over 200k on it but cylinder head was rebuilt about 30k ago with OE BMW parts, so this engine ran smooth and strong. Engine was pulled because I swapped in an M50.
This engine was smooth and strong. I just decided to go with the m50
400 locally.
This engine was smooth and strong. I just decided to go with the m50
400 locally.

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