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engine swap n40 m52

  1. going with a difficult swap, help please

    General E46 Forum
    Guys, i blew my engine a couple of weeks back. it was the 4 cylinder n40 engine. The cause is still a mystery. And now i was suggested a couple of solutions: First, get a new head with everything on it. It's about $3000 if the part is available from the dealership. Second, swap with another...