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Old 06-27-2021, 03:14 AM   #9666 (permalink)
FL 4Motion
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Quote:
Originally Posted by NissanTracker View Post
Was trying out the launch control feature in UpRev on the HR nismo. Second pull was pretty good. Tires just hooked up,, but I now have a whining noise that appears that it's coming from the rear diff? It's not super loud, but if I keep it at 3k rpms I can hear it occasionally. Wonder if I just Fried it. Any thoughts? Noise was never there before.

60k miles and I used redline mt-85. Maybe only 10k miles after diff. Oil change.
Hang on, isn’t mt-85 for the trans, and you’d run synthetic 75w-90 or -140 in the diff? I can’t remember if mt-85 is spec’d for the diff too?

If the noise is coming from your rear diff, whining, to me that’s sounds like a gear issue, as in your r&p isn’t set up properly. Is it possible, however unlikely, that a hard launch threw the backlash out, loosened the crush sleeve?

I dunno, it’s 3am and I’m about to turn in so I’m probably just reading this all wrong anyway.
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