No more wooo wooo noise

Discussion in 'Mazdaspeed 3 Transmission/Drivetrain' started by Ahmed Bahgat, Nov 1, 2022.

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  1. Ahmed Bahgat

    Ahmed Bahgat Greenie Member

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    Hello all

    I finally managed to put an end to the dreadful woo woo noise when you have the steering wheel full turn on very low speeds

    The cause is known, it is coming from the LSD which uses clutch pack to differentiate the front axle left and right wheels speed, the clutch pack get worn after many years of driving and no solution for it other than replacing the diff

    The same OEM diff in Australia will cost 6.5 K and is not available anymore, also there was no clutch pack available to the diff and the only offer I had was to retention the spring that pushes on the two side gears

    So, I planned to change the diff with a non-clutch pack LSD, I got one from Quaife in the UK, which is lifetime warranty and service free, it is a helical ATB (Automatic Torque Bias) differential, which produces no noise whatsoever

    I took the gearbox off the car myself and managed to dismantle and change all bearings inside it myself along with the new Quaife diff

    No woo woo sound now, and the car even feels much better and more stable while cornering on any speed, the torque steering almost eliminated and the car now follows a line while cornering that is less in both over and under steering, could not be much happier and doing the job DYI is actually not that hard and will be happy to provide all the info required regarding all parts, tools and how you do the job perfectly with least issues you may face
    http://www.free-islam.com/Mazda/AhmedWorking.JPG
    [​IMG]

    Cheers
     
  2. Awafrican

    Awafrican Moderator Gold Member

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    So what are all the parts and tools you need? Any pictures please upload directly here using the upload button so that they're hosted here and we don't loose them, it also prevents imbedding issues.
     
    Awafrican, via a mobile device, Nov 2, 2022
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  3. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    umm the " woo woo" noise can be made to go away with a friction modifier in the transmission fluid.

    though if you were experiencing torque steer your lsd was bad anyway
     
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  4. Ahmed Bahgat

    Ahmed Bahgat Greenie Member

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    Yes, but I tried everything and just makes it quiet it a bit, but it stays, also the old LSD was rattling, in fact one of the side pinions is completely loose

    Friction modifies are bad, I think, for the synchros

    Cheers
     
  5. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    They are not bad for the synchros it's what the transmission was designed for
     
    Easter Bunny, via a mobile device, Nov 3, 2022
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  6. Awafrican

    Awafrican Moderator Gold Member

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    Still waiting for part numbers etc... Otherwise this thread is kind of pointless
     
    Awafrican, via a mobile device, Nov 3, 2022
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  7. Ahmed Bahgat

    Ahmed Bahgat Greenie Member

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    Hello

    Been very busy, I have the word document with all the parts I bought from mazda-parts,com, I will try to upload it

    The most impotrant tool is a 20 Ton press, I got for 200 AU$, along with 2 and 3 legs pullers, however, I can put also the full list of tools that I needed for the job, but let me upload the parts needed first

    Cheers

    Hello

    This is the diff I bought from the UK, very happy with it, completely silent

    https://shop.quaife.co.uk/shop/atb-differentials/differentials/mazda-3-mps-atb-differential/

    Cool

    Do you think I should use friction modifier even if I have a helical diff and not the clutch pack OEM diff? I was thinking of adding it, but I thought I do not need it now after changing the diff

    Cheers

    This is the document I managed to get with all the gearbox internal parts and from it I managed to get all the part numbers I need

    Cheers


    I made over 40 videos on my youtube channel however my audience are mostly Arab people, but on most of the videos I still speak English as my 18 years old son does not speak Arabic, on the other hand, regardless of the language, I am sure it will help you visually, if you are interested let me know, here is a sample in fast/normal motion but there are more in normal motion



    Cheers
     

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    Last edited by a moderator: Nov 4, 2022
  8. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    The only reason to use it is to eliminate the chatter from the lsd. I haven't run any in my car for the last 90 k miles and haven't noticed any problems other than the woo woo noise so no you don't need it
     
    Easter Bunny, via a mobile device, Nov 4, 2022
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  9. Awafrican

    Awafrican Moderator Gold Member

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    Could you please upload the word docs themselves not as zip files.
     
    Awafrican, via a mobile device, Nov 4, 2022
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  10. Ahmed Bahgat

    Ahmed Bahgat Greenie Member

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    I did not get the option to download doc file, just the zip file but I will try again later today

    Cheers

    upload_2022-11-5_6-40-59.png
     
    Last edited by a moderator: Nov 4, 2022
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  11. Awafrican

    Awafrican Moderator Gold Member

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    That'd to do it, thank you for trying.
     
    Awafrican, via a mobile device, Nov 4, 2022
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  12. Ahmed Bahgat

    Ahmed Bahgat Greenie Member

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    I can email you the documents if you wish, they are very useful and without the one with all parts for all shafts with prices I would not be able to find the parts I needed

    Cheers
     
  13. Awafrican

    Awafrican Moderator Gold Member

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    Appreciate that, actually if you converted to pdf then you could upload them as non zip if you were so inclined
     
    Awafrican, via a mobile device, Nov 4, 2022
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  14. Ahmed Bahgat

    Ahmed Bahgat Greenie Member

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    Sure, I can convert them to PDF, I will try again

    Cheers

    This document has all the parts inside the gearbox grouped by shafts, prices are also included

    This document shows all the parts I have bought from both USA and Australia for my project of changing the diff
     

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    Last edited by a moderator: Nov 6, 2022
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