Re: 18 -> 20hp…a simple conversion?

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December 1, 2015 at 11:33 am #27882
wiscoboater
Participant

    I have a 75 20hp as well. According to Frank the difference between the 20 and the 25 was a bit more compression and some exhaust tuning in the leg. Mine is an odd ball motor with a triple fin gear case and an electrical plug on the port side. The serial number does not come up on marineengin, and the tag shows it to be Canadian built.