Tranny clanking

Discussion in 'Gas Engines/Drives/Transmissions/Props' started by Mightychan, Jan 1, 2018.

  1. Mightychan

    Mightychan Member SILVER Sponsor

    108
    Oct 8, 2016
    Panama City FL
    2005 DA 420, AB Dink
    Cummins 6CTA
    Hi all, I just noticed the other day that I am getting a clunk clunk clunk sound from my starboard transmission. I get the noise in forward or reverse, but nothing in neutral. No strange vibrations, just a noise. What should I be looking at as a cause of this? 2004 320, gas 350s with v drives, 350 hours. Thanks!
     
  2. Almightys

    Almightys Member

    180
    Jun 15, 2015
    Warren, MI
    1992 Sundancer 330, 7.4l's w vdrives, and genny
    454 Mercs
    Did you check fluid level and what the fluid looks like.
    I remember one time I had that issue at low rpms, the dip stick wasn't locked down tight.
     
  3. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    Fluid level and condition.prop shaft coupling hardware for looseness
     
  4. tdschafer

    tdschafer Well-Known Member SILVER Sponsor

    Aug 24, 2009
    Long island , NY
    1997 330 sundancer
    twin 454's, Carb, V-Drives
    I'm not sure if it's the same with your boat but I had alot of noise from my tranny's due to carburetor issues on my 454's. Once they were rebuilt, the noise was gone.
     
  5. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    I had a similar issue... ended up being a slight miss in my starboard engine. Changing the plugs made the noise go away.
     
  6. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    Garm
    454 Crusaders
    You have a 13 year old low hour boat. It could be an engine miss or worn springs in the damper plate. Make sure the engine is firing on all 8 cylinders before blaming the damper plate.
     
  7. Mightychan

    Mightychan Member SILVER Sponsor

    108
    Oct 8, 2016
    Panama City FL
    2005 DA 420, AB Dink
    Cummins 6CTA
    Thanks all. Turns out my problem is worse than I thought :( Starting a new thread.
     
  8. Escapade

    Escapade Member

    972
    Jan 10, 2007
    Lake Michigan
    390 Sundancer 2005
    Twin 8.1's
    +1 on changing plugs. when plugs get soiled the rpm drops and the shifting can make clicking sound. Mike
     

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