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post #1 of 5 Old 07-02-2014 Thread Starter
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repair yanmar motors

Hi all
I'm considering buying a cat that has been salvaged I believe it capsized. It has two yanmar diesels apparently oil on tappet cover appears clean.
I'm sure they weren't running at time of immersion
I'm thinking pulling them out leaving heads on removing crank pistons cam shaft flushing oil galleys diesel pump hopefully ok.
Any thoughts on hours of labour , hone cylinders? Replace seLs rings n bearings.
Cost?
Any thoughts would b useful
Thnx
JC
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post #2 of 5 Old 07-02-2014
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Re: repair yanmar motors

If they were in the ocean and are still submerged you may be able to rebuild them. I stress the "may" part of that statement.
If they went into ocean and have been removed from the ocean and have sat for "any" period of time then they will make great boat anchors.
Fresh water is not so bad but they are probably junk as the air will destroy them once they have been submerged.

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post #3 of 5 Old 07-03-2014
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Re: repair yanmar motors

The barrels of a diesel engine immersed in salt water rust enough in a day to make the pistons almost impossible to get out.

You can get them out with a big hammer but they will not be usable so budget for new pistons.


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post #4 of 5 Old 07-05-2014 Thread Starter
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repair yanmar motors

Thanks for the advice.
I'm not sure if they got water in them but removing the sump plug should tell me.
Yup I won't bother trying if evidence of water.
Thnx guys
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post #5 of 5 Old 07-05-2014
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Re: repair yanmar motors

Fwiw if they turn over and have compression they are rebuildable if they are frozen pull heads and make the rest an anchor

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