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

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February 8, 2021 at 3:57 pm #229916
frankr
Participant

    Betcha the 60hp is lower compression motor than the 65hp. Betcha if you check real closely you will find the combustion chamber is deeper in the 553xxx than the other. The 60hp motor was a resurrection of the 60hp Gale motor. They just modified it a bit to make an extra 5 ponies. 553xxx are typical Gale numbers.