Reply To: 60° looper has no cylinder head gaskets?

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February 10, 2019 at 8:58 pm #166598
Bob Wight
Participant

    US Member

    The 60 degree motors use a large O-ring instead of a head gasket to seal the cylinders. Not sure how OMC came up with that idea but it works. I pulled the heads on my 1998 Evinrude a few years ago to look into an overheat problem and the factory O-rings were still in good shape. I did replace them with new ones.

    Bob

    1937 Champion D2C Deluxe Lite Twin
    1954 Johnson CD-11
    1955 Johnson QD-16
    1957 Evinrude Fastwin 18
    1957 Evinrude 3022
    1958 Johnson QD-19
    1958 Johnson FD-12
    1959 Johnson QD-20
    1982 Evinrude 25hp

    “Every 20 minute job is only a broken bolt away from a 3-day project.”
    "Every time you remove a broken or seized bolt an angel gets his wings."