Torque Specifications

Discussion in 'Bubba's Outboards' started by vlparrish, Sep 30, 2007.

  1. vlparrish

    vlparrish New Member

    Messages:
    1,276
    State:
    Bedford, Kentucky
    Willard, do you know what the torque specs for the head bolts on a 1979 15HP Johnson are? Thanks Vern.
     
  2. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    Vernon I'll look that up in the book and get back to you.
     

  3. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    This is what my old OMC manuel say to do.

    The torque values

    bolt size
    1/4 inch torque to 60 to 80 inch pound or 5--7 ft. lb.
    5/16 in. 120---140 inch lb. or 10 to 12 ft lb

    3/8 in 220 to 240 inch lb. or 18 to 20 ft. lb.

    7/16 340 to 360 inch lb. or 28 to 30 ft lbs


    On the head start in the middle and do it in two stages and go in a circle
     
  4. vlparrish

    vlparrish New Member

    Messages:
    1,276
    State:
    Bedford, Kentucky
    Willard, thanks again. You are just to good. vern