Leak in Bilge – Thru-hull fitting -Question for BCB

This topic has 9 replies, 4 voices, and was last updated 10 years, 9 months ago by MeanV2.

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September 14, 2015 at 1:19 am #283075

RazorCat
Participant

Towed my 07 Sabre FTD to Hamilton this weekend and parked it in my boat slip. After about an hour noticed water in the bilge area. The water is coming in around the thru-hull fitting with a 90 degree ell on top located on the raised area on the transom at the rear of the bilge area. The threaded ell portion swivels inside the flange and nut assembly. Dont know if thats normal, or if there was originally a nut on the bottom that held it tight, but that appears to be where the leak is originating. It looks like a 3/4″ connection with a hose leading to the livewell aerator. I get a picture tomorrow if necessary. Does BCB parts keep these in stock, or is there a recommended replacement part / brand?Any suggestions guys?

September 14, 2015 at 1:37 am #283076

1stinLA
Participant

I believe there should be a flange on the outside of the hull, and the nut inside should be tightened with sealant keeping everything water tight. I would check underneath and see if the flange got hit or broken somehow. Here is a picture of the 90 degree fitting, though you will have to check with parts for the right size.http://images.jamestowndistributors.com … e/9127.jpg

September 14, 2015 at 1:51 am #283077

Bass Cat Boats
Keymaster

Thats similar to the fitting I was referring to. I think the problem is the threaded portion of the ell is loose in the bottom flange. Ill have to look closer tomorrow and see if its broken, or just needs to be tightened into the lower flange. I was going to remove the whole assembly, clean it, and reseal it with 3M 4200, or whatever is the recommended sealant by BCB.

September 14, 2015 at 3:44 am #283078

Bass Cat Boats
Keymaster

These commonly can break in time and hydrogen gasses from charging make the plastic fittings brittle. We have seen loose fittings from the two part nut on down. On a 2007 its hard to say what is the issue, though often its a cracked aerator housing.

September 14, 2015 at 12:21 pm #283079

Bass Cat Boats
Keymaster

The leak definitely originates from the fitting similar to what 1stinLA posted. Ill just replace the whole assembly to be safe. Is this something BCB parts keeps in stock? And should I use 3M4200 to seal it, or other sealant?

September 14, 2015 at 12:45 pm #283080

Bass Cat Boats
Keymaster

That is probably the 1 1/8″ overflow fitting we think you are speaking of. Those usually are cracked from someone stepping on them. It is still a production part and a stock item. You will need to trim to fit.

September 14, 2015 at 1:04 pm #283081

RazorCat
Participant

Ill pull it out this week and size it, then give parts a call.Thank you all.

September 14, 2015 at 4:17 pm #283082

RazorCat
Participant

OK. Got the fitting out. It doesnt appear to be damaged. The outer ring fell off, and the inside nut was hand tight, so I assume the clear silicone sealant failed to hold seal. It happens. I have 3M 4200 and 5200 on hand. Is either acceptable for sealing in this situation, and which would you recommend of the 2? IF I need to buy something else I will.

September 15, 2015 at 1:41 am #283083

1stinLA
Participant

I believe the 5200 would be fine, that is what I use anyway.

September 15, 2015 at 1:59 am #283084

MeanV2
Participant

1stinLA wrote:I believe the 5200 would be fine, that is what I use anyway.That is what I would use!Dan
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