Reply To: 1956 Johnson 30hp, RD-18

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March 25, 2019 at 1:01 pm #171954
Bob Wight
Participant

    US Member

    So one RD-18 powerhead I was looking at came back with compression readings of 105psi in both cylinders using the manual rope starter. Seems low to me. Thoughts?

    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

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