Transmission Gear Ratio for Cal 2-27 - SailNet Community

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Old 05-03-2012
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Transmission Gear Ratio for Cal 2-27

I have just purchased a 1975 Cal 2-27. Is there any way to determine what the gear ratio was on the tranmission? The boat was upgraded from its Atomic Four to a Kubota diesel in 1988 and has a Martec 2-blade folding prop 12D-12P.
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Old 05-03-2012
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Re: Transmission Gear Ratio for Cal 2-27

Quote:
Originally Posted by bruceboyles View Post
I have just purchased a 1975 Cal 2-27. Is there any way to determine what the gear ratio was on the tranmission? The boat was upgraded from its Atomic Four to a Kubota diesel in 1988 and has a Martec 2-blade folding prop 12D-12P.
That's going to depend on what transmission came with that engine. Look for a plate on the trany with the model#, serial#(maybe), and (hopefully) the gear ratio. This is what it looks like on a Yanmar:

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