Selecting transmission oil cooler size

Discussion in 'Powerboats' started by Gregscalade, Dec 21, 2005.

  1. Gregscalade
    Joined: Dec 2005
    Posts: 3
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Tennessee

    Gregscalade New Member

    What are the determing factors in selecting the appropriate sized oil cooler for an inboard transmission? is there a 'standard rule' for the amount of cooling area needed per HP?

    thanks
     
    Gregscalade, Dec 21, 2005
    #1
  2. FAST FRED
    Joined: Oct 2002
    Posts: 4,519
    Likes: 111, Points: 63, Legacy Rep: 1009
    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Usually this is specked by the tranny mfg.

    The reason ithere is no STD RULE , is the heat generated by each style of tranny is very different.

    WE have a DD 6-71 hooked to a Twin Disc , that is ALL mechanical, so no cooler and only 5 quarts of oil in the tranny total.

    Compare this to a hydraulic nightmare that needs 20 quarts of ATF and a good sized cooler.

    Only the mfg knows the heat generated by each setup.
    Overcooling or undercooling are both bad.

    Sorry,

    FAST FRED
     
    FAST FRED, Dec 22, 2005
    #2
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