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Old 23-05-2014, 17:33   #1
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Marinising air cooled generator

Hi All,
A previous owner has installed an air cooled generator in my boat, the only identifier on it being "186FA".
It appears to be a normal portable generator taken out of it's frame & dropped into the boat.
My concern it that it will not receive enough cooling air, presumably easily solved by installing a fan & ducting, but also would the exhaust need to be water cooled.
Cheers Paul
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Old 23-05-2014, 17:58   #2
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Re: Marinising air cooled generator

There have been previous threads about this subject. I have no idea what that id means or what size generator you have or if it is gas or diesel.

In short air cooled generators are really not suitable for marine use (not talking about the Yamaha/Honda gasoline gens. here). They are noisy and you will never be able to get them to run quietly. You will drive both yourself and your neighbors in an anchorage crazy. The exhaust is hot so you have to ensure some way of insulating/cooling the exhaust.

My advice is to sell it and replace it with either a small portable on deck (Honda etc.) gas gen. being aware of and taking precautions for carbon monoxide. Or install a proper below decks gen.
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Old 23-05-2014, 18:29   #3
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Re: Marinising air cooled generator

The 186FA is a chinese knock off of the Yanmar L100 diesel engine. They are made by quite a few different manufacturers in China. There are lots of chinese gensets that use them.

It shouldn't need water cooling for the exhaust, but will certainly need plenty of ventilation.

Edit: That said, I agree with Deepfrz.
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Old 23-05-2014, 19:14   #4
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Re: Marinising air cooled generator

Thank's guys, I was afraid that might be the best solution.
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