1952 johnson QD13

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    grunt311


    Replies: 21
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    #235929

    Good afternoon, I have a 1953 Johnson QD13. I noticed last night while running the motor at 3/4 throttle small bubbles coming from the crank case. The bubbles are coming from the section where the cases halves meet. I made sure all case bolts were tight but and they are. I am assuming the halves need to be resealed but and nervous it maybe something more. If i tear it down and reseal what do recommend to make a good seal. Also does anyone have the torque specs on the crank case bolts.

    Thank You
    Nick

    bobw
    bobw

    US Member - 1 Year
    Replies: 1349
    Topics: 45
    #235930

    Sounds like you need to open it up and reseal the case. Either BRP Gel-Seal or Permatex Anaerobic Sealer 51813 would be the correct application. Crankcase bolt torque is 120 to 144 in-lb.

    Bob

    1954 Johnson CD-11
    1956 Johnson RD-18
    1958 Johnson QD-19
    1959 Johnson QD-20
    1957 Evinrude Fastwin 18

    "Every 20 minute job is only a broken bolt away from a 3-day project."

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    grunt311


    Replies: 21
    Topics: 22
    #235931

    Bob,
    Thank you. could this be the start of something larger or just bad seal?

    bobw
    bobw

    US Member - 1 Year
    Replies: 1349
    Topics: 45
    #235932

    From the description of seeing bubbles at the case joint, it should just need a reseal job. While you have the case open, also be sure to change the upper and lower crankshaft seals. I don’t have a parts list for that year model but I believe it uses a carbon seal with an internal O-ring for the crankcase seals, similar to later model QD motors. Just need to replace those O-rings.

    Bob

    1954 Johnson CD-11
    1956 Johnson RD-18
    1958 Johnson QD-19
    1959 Johnson QD-20
    1957 Evinrude Fastwin 18

    "Every 20 minute job is only a broken bolt away from a 3-day project."

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