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naturally aspirated

  1. Southwest Regional - AZ, NM, NV, OK, TX, and UT
    These valve covers have a built in non replaceable crankcase vent valve. The symptoms the car may exhibit when the valve is faulty are: check engine light, rough running or stalling, and also a high pitched whistling noise. It fits the 1 series, 3 series, 5 series, x4, x5 and the z4. If you...
  2. E39 (1997 - 2003)
    I've been wondering about stroking my 540i and since I have picked up some m60 heads I might as well do everything at once. Alot of ppl and builders use M5 crank with arrow rods and forged pistons.... BUT I never want to go with any kind of boost because I prefer a naturally aspirated engine...
  3. General BMW Questions
    This may already have occurred to those of you who follow BMW news/trends more closely, but I couldn't help wondering while reading up on the new 7- and 5-series models that N/A engines are hardly being made available these days for US customers. We've read that ///M models will be F/I in the...
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