Water coming in at shaft

Engines, Drive trains, Propellers, Steering, Ground Tackle and other mechanical system
Sailing-61-North
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Re: Water coming in at shaft

Post by Sailing-61-North »

Hmmmmm?
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S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
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Re: Water coming in at shaft

Post by Sailing-61-North »

Although this looks like the culprit I have a bore scope on order and will look at the muffler.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
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Re: Water coming in at shaft

Post by Sailing-61-North »

I gave this some thought while driving home. The leak only occurs when the motor is running. The leak appears to be coming from above the stern shaft. The water heater fresh water supply was disconnected yet the leaks appears to be clear and not green antifreeze. Antifreeze levels in the engine were normal.

Looks like I will pull the exhaust next since I am leaning that way. Will not be able to run the engine till mid April due to temperature and no fresh water to attach. It will be good practice and piece of mind.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
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Re: Water coming in at shaft

Post by Sailing-61-North »

The hunt begins. Muffler looks ok but I will take it home and fill with water. Still single digits at night but it has been warming up to the 20's during the day.
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The start of boat yoga
The start of boat yoga
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Muffler
Muffler
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S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
Posts: 94
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
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Re: Water coming in at shaft

Post by Sailing-61-North »

Oh yea - Dont go head first down the very aft starboard locker. What a you know what to get out.

The very aft elbow was rusted but I didn't see an obvious crack. I will take a look at the exhaust where it goes out. Since I have all of this out I will replace what I can.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
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Re: Water coming in at shaft

Post by Sailing-61-North »

Well I had to cut an inspection hole but the culprit has been found. As shown the nipple has completely rusted away. Now to order new parts.
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S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
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Joined: Thu Jun 04, 2020 8:17 pm
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Re: Water coming in at shaft

Post by Sailing-61-North »

Another view. Corroded away in 2 locations.
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S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

Sailing-61-North
Posts: 94
Joined: Thu Jun 04, 2020 8:17 pm
Location: Valdez - AK
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Re: Water coming in at shaft

Post by Sailing-61-North »

Well every elbow was rusted out that was black pipe. The only exception was the brass one that is at the very end where it exits the boat.

Yet I did replace all the bad ones with black pipe again. I am on a time crunch to get the boat back in the water and motor over to the harbor.

Now that I have access openings and have mastered the boat yoga position that allows you to reach the stern I will replace the black pipe with brass but not until a later time.
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S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

bad
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Re: Water coming in at shaft

Post by bad »

Good to run that down and find the culprit (s). You can do bronze which may be $$$ - brass will also have corrosion issues. St. steel - go with 316 alloy would work. They also make fiberglass fittings that are meant for exhaust service.

Erik

Sailing-61-North
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Re: Water coming in at shaft

Post by Sailing-61-North »

Yep a replacement down the road for sure. Given my remote access and cost of shipping I will do some research before replacement again.
S/V Arctic Tern
Freedom 33
1981 - #37
Prince William Sound - Alaska

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