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      09-26-2011, 04:09 PM   #5
vasillalov
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Drives: 2008 335i Sedan, 2023 M3
Join Date: Aug 2009
Location: Chicago, IL

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2023 BMW M3  [0.00]
2008 335i E90  [8.00]
Quest,

Point taken!

However, do not forget that you are comparing a 4-banger transversly mounted to a straight 6 longitudinally mounted. The I-4 engines have some serious second order vibrations. Most of them have an intermediate shafts and/or massive vibration dampeners on the crank pulleys to help reduce the vibrations.

I hated the polyurethane motor mounts I put on my MK4 Jetta because they ended up transmitting a lot of those engine vibrations into the cabin. Very bad, especially when cold. But, on the upside, you could actually feel the torque being applied straight to the wheels instead of being "wasted" to twist the rubber mounts.

The N54 should be fairly "quiet" when it comes to vibrations compared to I-4 engines.

EDIT:
It looks like the 335is has a different part number ONLY for the right engine mount. The left one is the same. This makes me wonder what is the difference.
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