Alpha one gear ratio question

[Thechanges]

Upper unit on my alpha one is seized up tight. 1.84 gear ratio.
Have disassembled the outdrive into upper and lower units.
Lower shaft turns in forward and reverse.
Easy to mate another upper unit? Do I need the same gear ratio?
Should I replace with an entire outdrive and can I purchase an outdrive with a different gear ratio?
Came off a 1986 mercruiser 170.
Any advice appreciated.

 

[thumpar]

Re: Alpha one gear ratio question

You should use the same ratio. You might be able to get close with a prop but it would never be correct. If the upper is seized it may have contaminated the lower with metal. You could look into an SEI complete drive. They come with a 3 year warranty and you wouldn't have to risk running into problems with metal in the lower.