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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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  #11  
Old 04-07-2014
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Re: yanmar ysm8 tick slap - video

Sounds typical to me, and looks well kept/clean to boot. The Yamaha 30 (I'm guessing) is an interesting boat - with some nice ideas and touches both below and on deck. The under-the-V berth engine is one of them; maybe not the best one, but it's quiet in the cockpit and warms the bed! Long shaft with several steady rests, though.

From that one shot she looks well cared for.
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Old 04-07-2014
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Re: yanmar YSM8

Quote:
Originally Posted by cowlum View Post
I just looked up what a vdrive is.. This boat doesnt have a vdrive, its a forward mounted engine. What you are lookiing at is an engine mounted under the v-birth.

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From the interior picture, this looks like a Yamaha 25 or 26. Very high quality boats and fast, too.
The nominal hp rating for the Yanmar single horizontal cylinder engines was 8 hp for the smaller one and 12 hp for the larger one.
With the engine forward in their 25, 30, and 33, the shaft was horizontal and the prop turns in deep water just behind the fin keel. This scheme really puts the highest % of usable hp to the water. Compared to a rear engine with a shaft a steeper down angle, it's like getting another couple HP out of the engine.

Good luck on your purchase. If Swan had ever built a boat of that size, it would be that kind of engineering and build quality.
And, having said all that, I'd have a mechanic survey that little engine. It's a simple engine and the fee should not be too much.

Fair winds,
Loren
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Old 04-08-2014
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Re: yanmar ysm8 tick slap - video

YSM 8 says on the engine plate that it only puts out 7hp!.......Dale
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Re: yanmar YSM8

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Originally Posted by olson34 View Post
From the interior picture, this looks like a Yamaha 25 or 26.
You're right.. a 30 would have a bigger engine.
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Re: yanmar ysm8 tick slap - video

Yes its a Yamaha 25 it good condition.
I've never owned a diesel before (boat or car) and so was just a little thrown back by the racket.
I'll be organising a diesel inspection when I have a survey done.

Thanks for the replies!
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