TwinTurbo.NET: Nissan 300ZX forum - Help with sourcing ringing/whistling noise (video)
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Subject Help with sourcing ringing/whistling noise (video)
     
Posted by Metacom on December 31, 2013 at 4:39 PM
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Message Made a short video of a ringing noise that I and a Z shop near me have had trouble sourcing.

If I let the car sit for a day and drive into work (30+ miles) it wont make the noise. When I return, and through traffic it shows up after about 15 minutes. Seems related to how hot the car or whatever component is causing the noise gets.

Thought it may of been main bearings so those and the rod bearings were replaced. Noise remained exactly the same.

Clutch assembly replaced 5K miles ago, flywheel resurfaced, tranny been dropped several times because it sounds like its coming from the bell housing area. Everything visible checked out.

Poking the oil pan with a mechanic stethoscope I can hear it there as well but I think that its being transferred from elsewhere.

Im pretty certain it is something to do with the clutch assembly/flywheel. I'd like y'alls input, worried about possible crank walk...or damaging to drive

Video:
https://skydrive.live.com/redir?resid=513B2AA80E6BECE8!236&authkey=!AIiTjUu3yhY-KFE&ithint=video%2c.mp4

Old main bearing:
[ http://imgur.com/ucZoQs3 ]
[ http://imgur.com/t2U992J ]

     
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