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Thread: help identify this noise please

  1. #1
    Discovery-94 Guest

    help identify this noise please

    Hello experienced Landrover owners....

    not very sure the attached vid will work, but I am hopeful!

    There is a nasty little noise bugging me on my D1 manual, build up through all gears on acceleration, hitting worst pitch over 80 km/h, worsens when easing off the accelerator and disappearing (more or less) completely when taking foot off the pedal altogether.

    best described as mix between dentist drilling into teeth and circular saw permanently cutting aluminum in the cab

    been going on for a while, tried a bunch of remedies, none of which eliminated the noise - would like to hear fresh input as it is getting a bit annoying on highway trips, and something is clearly not happy....!!!

    ppleaaaase can someone come up with a magic solution
    Attached Files Attached Files

  2. #2
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    Sounds pretty good to me, if it didn't minimise when you backed off I'd say it was an alternator but maybe LT230 whine ?

  3. #3
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    Mmm does sound like straight cut gears .

  4. #4
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    Checked universals?
    1996 Disco 1 300TDI manual - Lucille a cantankerous red head! :D
    1997 Disco 1 300TDI Auto - sold

  5. #5
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    Had that noise on my 130, turned out to be collapsed bearings in the LT230. Transfer case rebuild solved it. $$ though.

  6. #6
    Discovery-94 Guest
    Quote Originally Posted by goingbush View Post
    Sounds pretty good to me, if it didn't minimise when you backed off I'd say it was an alternator but maybe LT230 whine ?

    ....yeh, the recording isn’t terribly great, it’s far louder in the car - maybe had the hand on the mic a bit while recording, while driving....

  7. #7
    Discovery-94 Guest
    Quote Originally Posted by theelms66 View Post
    Mmm does sound like straight cut gears .

    Excuse my lack of experience... Is is that a good thing or a bad thing...?

  8. #8
    Discovery-94 Guest
    Yes, I checked the unis, no vibrations or clunking going with it, so don’t think it can be them
    and yes, I heard LT230 a few times... in fact I got it rebuilt for that reason.... however the noise didn’t change...

    any other votes going for the transfer case?
    or anyone got any suggestions on how to eliminate any of the other components (diff, R380, CV...?)?

  9. #9
    Join Date
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    Quote Originally Posted by Discovery-94 View Post
    Yes, I checked the unis, no vibrations or clunking going with it, so don’t think it can be them
    and yes, I heard LT230 a few times... in fact I got it rebuilt for that reason.... however the noise didn’t change...

    any other votes going for the transfer case?
    or anyone got any suggestions on how to eliminate any of the other components (diff, R380, CV...?)?
    Just grease the unis to see if it quiets down. They may be dry (and if so, need replacing) and not showing actual (discernible) wear. An easy way to definitely rule them out
    1996 Disco 1 300TDI manual - Lucille a cantankerous red head! :D
    1997 Disco 1 300TDI Auto - sold

  10. #10
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    Does not sound too bad to me. I just wonder why its revving so high my old RR classic was about 1900rpm at 80 2500rpm at 110. Its not the transfer case out of a Defender is it?

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