Reply To: Champion Hydrodrive Year ID help needed

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June 14, 2019 at 2:07 pm #177261
JOHN D.
Participant

    US Member

    I have been wondering what the differences were between the 7.9 and the 8.5hp motors. They are both rotary and reed valve engines. I have an 8.5 motor and on the rods there are a double row of roller bearings. There are a total of 64 rollers on each rod. Don’t know if the 7.9 is the same.