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Slight gearbox whine

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    Slight gearbox whine

    Having spent hours rebuilding the car and engine the one thing I was hoping was ok was the gearbox. Altogether it's ok but as s winter project I think I could improve on it and hopefully see off more damage that could only get worse. I find myself now tuning into the noise.
    I'm getting slight general transmission noise in lower gears and overdrive whines a tad at about 50 mph then quietens down a tad. At presents its really not bad but many have mentioned they hear no transmission at all.
    General inspection of the box prior to fitting was excellent but I'm now kicking myself for not being as thorough as I normally am. I think it was because of my complete lack of knowledge in the gearbox field.
    I'm still waiting on a few pms for advice but thought to get a few more ideas on here.
    First option mentioned is a oil change. I'm currently running a specialised classic gear oil at present so I presume anything else won't takeaway noticeable whining or perhaps it will ?
    Gear box or engine removal. Neither I fancy but it will come apart so easy at present I think taking out the gearbox makes the most sense I have a pit too so that should help a bit.
    Once it's out just how hard is it to recondition and which parts are the old favourite to produce a typical whine. Do go for a paddocks full recon job fur the think end of £800 gulp most prob using 90% if my original gears.
    It's a while yet but would rather formulate a plan for the future.

    #2
    Edd. Are you sure it is the gearbox? Does it make any difference which gear you are in? Is your "Specialised Classic Gear Oil" an EP 80/90 grade one? I would suggest it is more likely to be the diff, or its nose extension bearing.
    If others say they can't hear anything perhaps you are worrying unnecessarily. Gearboxes designed and built over 40 years ago were rarely as silent as modern ones.

    Mike.

    Comment


      #3
      Originally posted by Lingen View Post
      Edd. Are you sure it is the gearbox? Does it make any difference which gear you are in? Is your "Specialised Classic Gear Oil" an EP 80/90 grade one? I would suggest it is more likely to be the diff, or its nose extension bearing.
      If others say they can't hear anything perhaps you are worrying unnecessarily. Gearboxes designed and built over 40 years ago were rarely as silent as modern ones.

      Mike.
      I intend to pop out with a couple of owners soon one in his stag to see the difference. The stag coasts quietly and the overdrive slowly goes in and out of a whine as you drive it. as soon as its disengaged it reduces. Both diff outside bearings were replaced and nose end side too. I forget the oil I used but it was suggested by Julian whilst I was rebuilding the car so I know its good oil.
      I will have a look in the garage soon at what I used .

      Comment


        #4
        Edd
        Can you get a decent recording of the noise ?? Better if it can be heard.
        I suspect that if it is gearbox Russ could give you some good info / Help

        Cheers Glenn

        Comment


          #5
          If the noise changes with overdrive in or out rather than speed related it could well be the overdrive bearings, about £50 for a set from overdrive repair services IIRC. Not a hugely difficult job to change them once the box is out.
          Neil
          Neil
          TV8, efi, fast road cams and home built manifolds. 246bhp 220lbft torque

          Comment


            #6
            I love it when Neil says its not difficult
            Thanks guys like I said I will do a bit more driving and more coasting just to be sure as diagnosis is the main part of the cure.
            Message already sent to Russ and I will hopefully enjoy this Indian summer before taking the box out. My dad is away for three months over Christmas so I have his big garage all to myself ahh bliss.

            Comment

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