Repowering with an outboard? - SailNet Community
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post #1 of Old 08-18-2008 Thread Starter
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Repowering with an outboard?

Hi,

I'm not there yet, but i'm wondering what to do when my 30+yr old Yanmar dies. I doubt I'll be able to afford to purchase a new or decent condition replacement (which could be more than the value of my boat), and am wondering if it's possible (well, ya, it's possible, but is it a good/mediocre/bad idea) to add an transom mount for a 18-25hp outboard motor instead.
Pros:
I'm thinking the space where the inboard is now could provide a ton of storage space, and the outboard would be far easier to service than the inboard and quieter while running. FAR cheaper to repower with a roughly $3K new outboard motor.
Cons:
I'm thinking downsides might be prop coming out of the water in big seas. Have to bolt or chain it on well for security.
It would look kinda red-neck

I have a '80 33' Hunter Cherubini with 5.5' draft keel.

Ty in advance for your thoughts.
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post #2 of Old 08-18-2008
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Some things to consider are the changes to weight distribution and steering under power.

John
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post #3 of Old 08-18-2008
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Another consideration is if the weight of the Hunter 33's inboard engine block was originally factored as supplemental to your keel's ballast. Removing the engine would therefore raise the boat's center of balance.

True Blue . . .
sold the Nauticat
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post #4 of Old 08-18-2008 Thread Starter
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Add a fresh water tank and canned goods locker where the engine was?
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You're still putting significant weight on the stern of the boat.

John
Ontario 32 - Aria

Free, is the heart, that lives not, in fear.
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True, is the soul, that hesitates not, to give.
Alive, is the one, that believes, in love.
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post #6 of Old 08-18-2008
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You may find a that a new 15- 25 hp outboard is not all that cheap either. storing gas is a big problem too.

Denise, Bristol PA, Oday 30. On Tidal Delaware River, Anchor Yacht Club.
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My boat is sold!
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post #7 of Old 08-18-2008
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have you checked into overhauling your yanmar? do you have a 2gm 20 or 3gm 30? diesel fuel is a lot safer than storing gasoline. your inboard engine is a lot more dependable than a transom hung outboard. my engine is a 14yr old 2GM20F and i expect it run a loooong time before needing work. you don't say if is using oil or other problems.
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post #8 of Old 08-18-2008
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You've got to remember that going to an outboard also gives you a lot less choices and options. An in-board diesel can power a hot water heater, A/C, a larger alternator, water maker, refrigerator and such. Can't do that with an outboard.

Sailingdog

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post #9 of Old 08-18-2008
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Smile Why Not

Have you considered to recondition the engine you have while it still works?, if this is too expensive too just slab an engine in the stern, 9,9 is enough if you normally sail and mostly use it for in and out of harbour.

He who has the most fun wins
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I travelled the pacific with a faulty engine.
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post #10 of Old 08-18-2008
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I ran that on the back of my Pearson 36 for almost 2 years. It does good in protected rivers, but out in the harbour on a rough day it would come out of the water alot. Granted the motor isnt really made for this, or is it long enough. Ive since gotten an extra long shaft 9.9, but ive got to rebuild the bracket since it has rusted pretty bad.

Its your call, but you may have to make a custom bracket to bolt an off the self bracket onto in order to get the motor low enough depending on your transom style. Also dont forget the do some reinforcing to the transom since it wasnt made to hold a motor. Good luck. PM me if you want more info on my bracket.


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1972 Pearson 36 S.V. Distant Star
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