Weak noise from newly rebuilt differential
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  1. #1
    Rods 'n' Sods Junkie
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    staleg is offline

    Weak noise from newly rebuilt differential

    Hi
    Two seasons ago I got my Jaguar rear differential rebuilt by Ward Engineering.
    After app 500 miles, I changed the oil as recommeded.
    Oil is according to Ward's advice.
    Driving in speeds around 90 km/h, I can hear a weak "singing" noise. Going faster or slower, it's quiet.

    The car is a 34 Roadster with not much sound isloation, but the diff is mounted to the frame with bushings.
    Should I worry about the noise?
    Could it be the U-joints making this kind of noise? The noise doesn't change when I turn, so I assume it's not the wheel bearings.

    IMG_3486.JPG
    Last edited by staleg; 10-09-2020 at 19:17.
    Good judgement comes from experience, and a lot of that comes from bad judgement.

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  3. #2
    Off the Xmas card list kapri's Avatar
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    Buy a cheap stethoscope ( medical type) and extene it until you can gaffer tape it to the diff and also the hubs to chcek outer bearings. Did you reset the end float on the hubs ? Go for run while wearing it and you'll pick up where it's coming from.

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  5. #3
    Official RnS Addict mygasser's Avatar
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    everything has it's own resonant frequency, it looks like you found your diff's.
    neil.
    need a job done on your project? i may be able to help.

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