Quote:
Originally Posted by pkp4911
Hugely disappointed in a driveline vibration especially around 3K. k
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Congrats on your swap!
RE vibration, based on the description of your issue I'll have to stand with BYprodriver on the balance. Having vibration which is more noticeable at certain RPM range is a pretty clear indication of something out of balance.
Get the flywheel dynamically balanced and that should solve it. That assuming the crank is stock to its engine (i.e already factory balanced). RE engine mounts; even if those are made out of soft gelly I'm afraid it won't solve a 400kg engine which is wacked out of balance :/ Might actually make the problem more noticeable.... just at a different RPM range.
ps: I am not a Porsche engine engineer nor a specialist. Just had this issue myself only very recently with similar/heavy rotational parts. Dynamic balancing sorted it.
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