70 Yamaha - Smaller Lower Unit
I have a 1988 two stroke 70hp Yamaha, with the 2.33:1 lower unit. I would like to run a smaller lower unit with higher gears.
I know that the lower unit from a 55hp Yamaha will bolt up, and has a 1.86:1 ratio. I have read that the lower unit from a four stroke 50 will bolt up, and has a 1.84:1 ratio.
Can anyone confirm that the gearcase from a F50 will fit a 70hp two stroke?
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What Do I Have? 40-50-60 HP Yamaha Gearcase and What Year?
Igot this gearcase with a bunch of stuff I bought, seems like it is almost new. It is a short shaft, and the guy had it to use on a Mod 30. It is a 13 spline shaft, not what year.
Is this gearcase what you guys are talking about?
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I'd Like to Sell This Yamaha Gearcase