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  1. General BMW Discussions
    I drive a 2007 335i n54 e93. It is full bolt-on and currently running a MHD 2+ tune. So i was on my way to work one morning. I got off the freeway and it felt like i had ran over my engine. Turns out all six bolts on my crankshaft pulley had broke off . Now im left with trying to extract the...
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  3. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi, I'm fitting a M52 to a kit car. I'm finding the engine is a few mm too long. Since I'm not using the Aircon, I figured a cheap solution would be to grind the outer puller off the harmonic balancer. Is this a really bad idea? Main concerns are: 1. Structural Integrity of the remaining...
  4. General BMW Discussions
    Just looking for a little advice on how to analyse the Harmonic Balancer/Crankshaft Balancer for defects. I've got a stock 2006 BMW X3 with an annoying vibration both at idle and 1500rpm. The only modification is blanking the swirl flaps. It's got new engine mounts, new clutch and Dual Mass...
  5. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi all I have recently acquired a 2002 320d touring with a multitude of issues I am wading through. On idle there is a inconsistant temporamental metallic knocking sound, IE, not every engine revolution, but randomly every 3, 5, 2 seconds or sometimes every second, then back to random again...
  6. BMW 5 Series Forum - Technical Talk on the BMW E12
    Hi folks, I've just bought a '93 525i with the M50 engine. It's got a slight engine vibration at around 2200 rpm which I suspect is down to the harmonic damper on the front pulley. I can get a used one for £20 but wondered if anyone had any experience of what is required to change it - is it...
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