308 GT4 Driveshaft flanges | FerrariChat
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308 GT4 Driveshaft flanges

Discussion in 'Technical Q&A' started by maseratighibli, Oct 29, 2005.

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  1. maseratighibli

    maseratighibli Rookie

    Nov 29, 2003
    26
    Oxford
    Full Name:
    Gareth Kerry
    #1 maseratighibli, Oct 29, 2005
    Hi everyone,I am in the process of recommissioning the GT4 after a couple of years in hiding when I decided to refresh my memory as to a previous posting on the old forum, it relates to a problem with the driveshaft flanges still being wobbly when the fixing bolt is tightened.
    At the time I concluded that the back edge had become burred and was moving back to far (only by a few thou) but this was enough to cause the clamping washer to tighten solely on the shaft,I got over this by having a recessed washer made that allowed clamping of the outside whilst clearing the middle,this cured the problem.
    After all this time and studying the pic in the manual I was wondering if anybody knows whether the end of the splined shaft is supposed to be perfectly in line with aluminium flange because unless it is (or slightly proud) I cannot see how the washer is supposed to clamp.My solution definately works but im a little concerned that there is meant to be a slight wobble??????? which I have now eliminated,I would be greatly in debt to the person who knows exactly how this setup is supposed to work.

    Regards
    Gareth
     
  2. gerritv

    gerritv Formula 3

    Jun 18, 2001
    1,400
    St Catharines
    Full Name:
    Gerrit
    #2 gerritv, Oct 29, 2005
    Hi
    you definitely don't want a lot of wobble. However I noticed on my car that although the shaft was recessed a little (and thus the washer could clamp it, there was a some slight movement. I think this is just the bearing on the differential allowing some movement. I was told not to worry about it if there was only a small movement. If you are leaking oil there, then it is definitely too much :)

    Gerrit
    http://dino308gt4.com
     
  3. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
    Full Name:
    The Bad Guy
    #3 ernie, Oct 29, 2005
  4. Artvonne

    Artvonne F1 Veteran

    Oct 29, 2004
    5,379
    NWA
    Full Name:
    Paul
    #4 Artvonne, Oct 30, 2005
    Mine wobbled as well. In looking into it I was advised that the splines wear which allows the flange to wobble even though the bolt is tight. If a washer were holding it ridgid, I would assume it would flex under load, even though it wont by hand.

    But upon disassembly, I found that the splines on mine were tight, but the side gear to differential carrier clearance had become excessive. Simply swapping them side to side elleviated 95% of the play. However, there are no bearings or bushings between the side gears and the carrier, just hardened steel to hardened steel facing.
     
  5. Dave

    Dave F1 Rookie

    Apr 15, 2001
    2,722
    Little Rock
    Full Name:
    David Jones
    #5 Dave, Oct 30, 2005
    What kind of shape are your CV joints in?
     
  6. maseratighibli

    maseratighibli Rookie

    Nov 29, 2003
    26
    Oxford
    Full Name:
    Gareth Kerry
    #6 maseratighibli, Oct 30, 2005
    CV joints are absolutely fine, just thought I would see if anybody else had encountered this before,thanks to everybody.

    Gareth
     

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