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Re: Leaking Keel Bolts [Re: JBiermann] #15161
09/08/13 05:34 PM
09/08/13 05:34 PM
Joined: Jun 2000
Posts: 232
Belleville, IL, USA
Mark Offline
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Mark  Offline
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Joined: Jun 2000
Posts: 232
Belleville, IL, USA
Sealing wet keel bols just seems like a bad idea to me.

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Re: Leaking Keel Bolts [Re: JBiermann] #15193
09/17/13 07:18 PM
09/17/13 07:18 PM
Joined: Aug 2013
Posts: 164
Portland, ME
JBiermann Offline OP
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JBiermann  Offline OP
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Joined: Aug 2013
Posts: 164
Portland, ME
So there has been a disturbing discovery, keel bolts might not be to blame after all. There is a steady trickle of water coming from the seam at the very rear of the bilge cavity under the floor about where the hoses stick through (see picture). Any idea where the fault may be? Best way to fix it? I used some of the epoxy putty to seal the seam but water is still flowing around the sides, enough to trip my autoswitch about every 15 mins. Anybody seen this before?

[Linked Image]

-Josh

Attached Files
bilge leak rear.JPG [477.87 KBytes] - (1102 downloads)
Re: Leaking Keel Bolts [Re: JBiermann] #15194
09/17/13 07:43 PM
09/17/13 07:43 PM
Joined: Apr 2007
Posts: 114
Richmod, VA
Phil Offline
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Phil  Offline
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Joined: Apr 2007
Posts: 114
Richmod, VA
Check your stuffing box.

Re: Leaking Keel Bolts [Re: JBiermann] #15195
09/17/13 07:55 PM
09/17/13 07:55 PM
Joined: Aug 2013
Posts: 164
Portland, ME
JBiermann Offline OP
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JBiermann  Offline OP
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Joined: Aug 2013
Posts: 164
Portland, ME
stuffing box is all set, I've tightened it up. I can see the water running in from that joint in the photo, where do those hoses run/ whats on the other side of that seam?

Re: Leaking Keel Bolts [Re: JBiermann] #15196
09/17/13 08:17 PM
09/17/13 08:17 PM
Joined: May 2007
Posts: 1,234
Newport and Naples
Cap'n Vic Offline
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Cap'n Vic  Offline
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Joined: May 2007
Posts: 1,234
Newport and Naples
only through hull on starboard side back there is water intake for engine, but you may want to check also the transom through hulls as they have a tendency to crack at 30 years. although only the exhaust is low enough to maybe leak at mooring. but there is a ~6 in. piece of hose with two hose clamps to check as well on the exhaust. If I remember correctly if it is leaking it will not drain down directly below the engine but through the starboard quarter berth or below that false floor you see directly under the engine.

Re: Leaking Keel Bolts [Re: JBiermann] #15197
09/17/13 09:10 PM
09/17/13 09:10 PM
Joined: Aug 2013
Posts: 164
Portland, ME
JBiermann Offline OP
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JBiermann  Offline OP
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Joined: Aug 2013
Posts: 164
Portland, ME
engine intake through hull is dry, compartments under aft berths are also bone dry, engine compartment is dry as well and the stern compartment next to the transom and hoses, including the exhaust, also intact and dry. I'm thinking there must be fiberglass damage from previous groundings, somehow water is getting in along the keel and following the fiberglass up into the space behind the bilge where I cant access without pulling up the floor (unless someone has some info on this?) My plan is to pack all the seams behind the bilge with epoxy putty and assess when we pull her next month.


Re: Leaking Keel Bolts [Re: JBiermann] #15205
09/19/13 09:04 AM
09/19/13 09:04 AM
Joined: Jun 2000
Posts: 232
Belleville, IL, USA
Mark Offline
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Mark  Offline
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Joined: Jun 2000
Posts: 232
Belleville, IL, USA
Packing those seams is just going to create a dam with a lake behind it. There's about 100 pounds of vermiculite back there under the floor. When I tore it out I found that some of the inner hull skin under the verm was porus, allowed water to leak into the balsa core. It's not a good place for a lake. Let the water drain into the sump and pump it out.

Re: Leaking Keel Bolts [Re: JBiermann] #15206
09/19/13 09:09 AM
09/19/13 09:09 AM
Joined: Aug 2013
Posts: 164
Portland, ME
JBiermann Offline OP
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JBiermann  Offline OP
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Joined: Aug 2013
Posts: 164
Portland, ME
What is the purpose of the vermiculite? What is the best way to remove the wooden floor, im guessing drilling out the bungs, removing the screws and carefully preying it up?

Re: Leaking Keel Bolts [Re: JBiermann] #15208
09/19/13 01:07 PM
09/19/13 01:07 PM
Joined: Jun 2000
Posts: 232
Belleville, IL, USA
Mark Offline
Senior Member
Mark  Offline
Senior Member
Joined: Jun 2000
Posts: 232
Belleville, IL, USA
Josh,

I posted some pics for you in the photo forum:

http://j30.us/ubbthreads/ubbthreads.php/galleries/15207.html#Post15207

The verm supports the floor like the joists in your house. It was used instead of traditional stringers or "floors" because the floor is a molded part of the liner. It was set in all at once, squished onto globs of verm under the floor. The verm form fit into place.

The floor is a fiberglass laminate with a 1/4" balsa core. The floor was molded together with the liner (galley, cooler, settes, engine pan, etc.) all at once. Then all set in and tabbed where they could reach. It's under your teak and holly.

The verm aft of the keel sits in a low spot that can collect water. Your water is flowing through there from somewhere.

Re: Leaking Keel Bolts [Re: JBiermann] #15214
09/24/13 09:29 PM
09/24/13 09:29 PM
Joined: Oct 2009
Posts: 381
Squamish, British Columbia
NaturalHigh Offline
Senior Member
NaturalHigh  Offline
Senior Member
Joined: Oct 2009
Posts: 381
Squamish, British Columbia
I had a steady leak like this and was coming through the prop strut mount. You can't see it because it gets under the liner right away and makes its way to the bilge. I suspect this is your problem.

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