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Thread: Donut gone replaced by vibration

  1. 10th April 2009, 09:02 AM #1
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    Donut gone replaced by vibration

    I replaced my rear donut on my D1, rwc failed the donut. I want to do a 2" lift so thought that was the time to replace the donut with uni joints. After doing it I have a big vibration. On over run I have huge vibration and lots of bad noises. Not the uni joints I think. More a scraping noise. I'm about to jack it up and have a look but thought I'd ask first.
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  2. 11th April 2009, 12:35 PM #2
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    Does this modding involve replacing part of the diff ?
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  3. 11th April 2009, 03:56 PM #3
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    no matter how good the rest of the vehicle is,,
    a Disco with a donut will always have less vibes than one with a uni.
    "How long since you've visited The Good Oil?"

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  4. 11th April 2009, 06:03 PM #4
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    A spacer needs to be made on some models when changing back to the uni flange. The problem if you don't is that the pinion will NOT tighten up and that could be where the horrific noise is coming from Don't keep driving until it is checked. You shouldn't be able to move the pinion flange up and down at all.

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  5. 11th April 2009, 06:29 PM #5
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    It did seem to screw in a long way. Do you know who makes the spacer or what dimensions they are. Thanks
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  6. 11th April 2009, 08:32 PM #6
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    they usually come out of a 2nd hand diff... but then you need to set the pinion preload if its to be done properly.

    as soon as i read this thread the first thing i though of was, bet he forgot the spacer

    cheers phil
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  7. 11th April 2009, 09:31 PM #7
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    Quote Originally Posted by discowhite View Post
    they usually come out of a 2nd hand diff... but then you need to set the pinion preload if its to be done properly.

    as soon as i read this thread the first thing i though of was, bet he forgot the spacer

    cheers phil
    AFAIR Phil the later 'donut equipped' D1 and RRC diffs had shims for pinion preload, not crush spacers?

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
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  8. 11th April 2009, 09:56 PM #8
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    I had the flange and spacer when I changed mine.
    about an inch? long, same size as the flange.
    goes onto the pinion before you put the 4 bolt fange on.
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  9. 12th April 2009, 08:43 AM #9
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    Would have been nice if British Off Road had mentioned that when I bought the kit. Will go back on tuesday and see if they have one. Thanks for the help. Will be nice to be driving a Land Rover again. The Navara is just not in the same class.
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  10. 12th April 2009, 07:52 PM #10
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    Quote Originally Posted by hook View Post
    I had the flange and spacer when I changed mine.
    about an inch? long, same size as the flange.
    goes onto the pinion before you put the 4 bolt fange on.
    I think it is closer to 10mm deep from memory.

    It is just a ring. Nothing fancy. If you had the depth and internal/external diameter you could make it yourself.
    A lathe would be nice of course.
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