Reply To: johnson/evinrude V4 60HP CYL HEAD DIFFERENCES

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February 21, 2021 at 9:57 am #231901
turtledoctor
Participant

    FYI-I did check the head volume on both heads–the 1968 65HP one and the 1964-1967 60HP ones

    NO DOUBT ABOUT IT–The 65HP head (pn 313756 and 57) have a much more SHALLOW combustion chamber,,,by about .125

    It is NOT a milled version of the 553758 head as both heads have the same overall height

    It is a different casting for sure,,,,all other dimensions appear the same