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Re power with new sail drive

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Gerry McClintoc View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerry McClintoc Quote  Post ReplyReply Direct Link To This Post Topic: Re power with new sail drive
    Posted: 13 March 2022 at 12:41pm
Has anyone repowered with a new sail drive and if so what brand works and how did it go Mine is about done and I would prefer not replace it with an outboard
thanks

Gerry
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Foghorn View Drop Down
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Joined: 24 August 2002
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Foghorn Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2022 at 1:08pm
A few boats have repowered but haven’t shared a lot of details. If I had to repower I would consider the Yanmar 1GM10 with the SD25 saildrive, but it wouldn’t be a drop in solution.

Are you having engine or saildrive issues with the Bukh?
Paul White
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Gerry McClintoc View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerry McClintoc Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2022 at 2:53pm
A bit of both. Big issue is water pump is leaking water into oil. Haven't been able to locate any parts or replacement to fix it. Leg is rough lots of epoxy patches but I have a used spare in Ok shape
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Foghorn View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Foghorn Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2022 at 3:28pm
Replacement pumps are available (Johnson F35B) or you can rebuild your existing pump.

That said the water pump is not usually the source of water in the engine oil. For that to be the case not only the water pump would leak but also the shaft seal on the auxiliary drive, to which the pump is mounted, must also leak. This is unlikely as there is a drain/vent hole on the auxiliary drive so no pressure can build up there.

The most likely cause of water in the oil is a leaking head gasket.

Paul White
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Gerry McClintoc View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gerry McClintoc Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2022 at 12:26am
My water pump drain hole was leaking water and the side of the housing is badly corroded and needed an epoxy patch. Do you know where you may be able to get the Johnson pump I would like to try to replace the pump before I pull the head off to see if that is the problem thanks Gerry   
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John Mills View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Mills Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2022 at 3:46pm
The pump is easily replacable and there is an upgrade pump - search it on the forum  . Yes it will leak  water into the engine .  The new pump has a roller brering instead of a sleve so the seals last longer as the old one would wear oval .You will either need to grind your existing hold down /bracket or order the new ones (grinding is easy ) .  That Bukh is hard to beat , mechanical fuel pump so she will run with dead batteries and you easily can pull start it . It is stone axe simple . Nothing else is as light or will fit in the same space . Burns just a liter an hour  - efficient . My only complaint is the lackluster charging . 
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Kentbrownlow View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kentbrownlow Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2022 at 1:19am
Several years ago I replaced my water pump with a Volvo part.
I forget the actual part number, but it fit perfectly and the leaks stopped!

Full Circle
Grey Erik #242
Now with a new owner!
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frfletch View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote frfletch Quote  Post ReplyReply Direct Link To This Post Posted: 08 June 2022 at 4:14pm
OMG! Do not change out that beautiful Bukh, nor its sail drive for anything else because of a leaky water pump. They are both wonderful pieces of machinery and are easy to fix. There are plenty of parts available to do whatever you need. Any change will wreck to boat in my opinion, other than to retain the sail drive and switch out to an electric motor with battery power. Here in BC, two Laser's have done that within a budget of CAD$6,000.

Frank
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Geoff Coke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Geoff Coke Quote  Post ReplyReply Direct Link To This Post Posted: 05 July 2022 at 9:17am
I would be curious to hear about the switch to Battery Power.  Photos, description, lessons, etc.

Geoff
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