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  1. #1

    Default Borg Warner Transmission model identification

    I have a borg warner transmission bolted up to 210 hp perkins diesel in my boat. Unfortunately there is no name plate on the tranny to identify its model. Are there any notable visual characteristics that I can look for that will help me identify the model type? I think it is a 71 or a 72 series and it is pushing a slow, heavy displacement lobsterboat hull. Also, I have noticed that there is a little lag or delay time between when I shift into gear and when the actual shift takes place. Any suggestion what is causing this and what the remedy is. Also what are the recommended tranny fluids for a 71 and a 72 series BW tranny?

  2. #2
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    2,706

    Default Re: Borg Warner Transmission model identification

    baitbag i'm not a diesel or a transmission expert, but maybe a few pictures might help others on this site help you

  3. #3
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,798

    Default Re: Borg Warner Transmission model identification

    I'd suspect it's a 72 series with a reduction gear....the 71's don't always handle the diesel's torque very well....

    I've always used the ID plate - it may have been painted over.....

    The shift is controlled by hydraulic fluid pressure once the lever is actuated....so I'd suggest starting with a fluid check and then a pressure test....you can find many pdf versions of the service manual via a www search.

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