engine techs please help
Hi i purchased a m54 3.0 rebuilt motor for my 330ci and waiting to hear back from the builder, but for the mean time... indy mechanic installed the motor and put everything together car fires right up and idles fine. But their is a very loud squeal like a belt or bad bearing coming from the front of the motor. we removed both belts and the sound is still there. He drained the oil pan to find no metal shavings and he took off the valve cover , and no marks on the timing chain or cams.
clutch pedal pushed in or out it still makes the noise i think that takes the throw out bearing out of play
ANY input would greatly be appreciated