Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 11-03-2010, 14:54   #1
Registered User

Join Date: Feb 2010
Location: Simcoe, Ontario, Canada
Boat: Islander Mark II 30, 30ft - Zephyr
Posts: 78
Testing Thru-Hulls

This may be a silly question, but is there a way to test a through hull fitting.

The reason I ask is this. I bought an older boat that has been out of the water for 3 years. I am doing a bunch o f repairs on it, like refinishing and rebeding the deck and wondered if there was a way to test the through hulls to make sure they are not going to leak. They all look ok to me, but I would hate to get it in the water and find that they are leaking and have to pay to get the boat pulled again right away.

I s this something that fails allot? Or am I being overly cautious.
__________________

__________________
Captin_Kirk is offline   Reply With Quote
Old 11-03-2010, 15:02   #2
Registered User
 
Randy's Avatar

Join Date: Oct 2008
Location: San Diego
Boat: Searunner 31
Posts: 639
You could hook a hose up on the inside for a test with the valve closed. Are they freshly or at least well bedded?
__________________

__________________
Randy is offline   Reply With Quote
Old 11-03-2010, 15:59   #3
Registered User
 
tager's Avatar

Join Date: Apr 2009
Location: Vashon, WA
Boat: Haida 26', 18' Sea Kayak, 15' kayak, 6.5' skiff, shorts
Posts: 837
I would rebed them while you have them out. Then you will know that they are not suspect. Also, minimize. Most sinkings happen at the dock, and they usually have to do with through hulls.
__________________
tager is offline   Reply With Quote
Old 11-03-2010, 21:00   #4
Eternal Member
 
Chief Engineer's Avatar

Join Date: Aug 2006
Location: North of Baltimore
Boat: Ericson 27 & 18' Herrmann Catboat
Posts: 3,798
Remove/Rebed/Re-install

Believe me....you WILL sleep better.
__________________
Chief Engineer is offline   Reply With Quote
Old 11-03-2010, 22:42   #5
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
I would even consider to replace them with new ones instead of cleaning and inspecting the old ones. These fittings are too cheap to spend a lot of time and solvents on for cleaning.

If they all look good (no pink color or blush to the bronze, no pitting etc) you can also launch but ask them to keep a little weight in the slings and inspect every one for leaks before removing the slings.

cheers,
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 11-03-2010, 23:34   #6
Moderator Emeritus
 
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
Quote:
Originally Posted by Chief Engineer View Post
Remove/Rebed/Re-install Buy new/install

Believe me....you WILL sleep better.
With all the other work being done this is cheap peace of mind.


Quote:
Originally Posted by s/v Jedi View Post
I would even consider to replace them with new ones instead of cleaning and inspecting the old ones. These fittings are too cheap to spend a lot of time and solvents on for cleaning.

If they all look good (no pink color or blush to the bronze, no pitting etc) you can also launch but ask them to keep a little weight in the slings and inspect every one for leaks before removing the slings.

cheers,
Nick.
If they don't leak in the slings you will always wonder.

If they do leak in the slings your launch day is ruined.

(BTW - In all likelihood, they won't leak)

Replace them and you don't have to think about them for 10 years at least.
__________________
Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 12-03-2010, 00:38   #7
Registered User
 
cat man do's Avatar

Join Date: Aug 2006
Location: Brisbane Australia [until the boats launched]
Boat: 50ft powercat, light,long and low powered
Posts: 4,409
Images: 36
Fiberglass boat..go solid glass tube and make it part of the boat
Metal boat.. weld one in.

Thats my thoughts anyway
__________________
"Money can't buy you happiness but it can buy you a yacht large enough to pull up right alongside it"...............David Lee Roth
Long Distance Motorboat Cruising – It Is Possible on a Small Budget
cat man do is offline   Reply With Quote
Old 12-03-2010, 05:26   #8
Registered User

Join Date: Mar 2010
Posts: 11
Islander MK II, same boat that I had. If you still have a gate valve under the sink then they are original and you should by all means replace every one of them. If they are ball valves then look at the engine intake valve. It is the small one in your lazarette. If there is any green on it replace all. Every one is right. These are a cheep piece of mind. I always found that the answer to any question I asked was YES. If you are asking if they are safe the answer is probably not. Should I replace, yes. All your thru-hulls should be silicon bronze. Replace with like item. Don't put plastic or PVC anywhere where it will be within 1' of the water line. As for testing the metal you can ping them but I never trusted in that. Have fun, Good boat. If you still have a gas motor replace it with a Yanmar 2 GM20. Will serve you well.
__________________
doslocos is offline   Reply With Quote
Old 12-03-2010, 05:55   #9
Registered User

Join Date: Feb 2010
Location: Simcoe, Ontario, Canada
Boat: Islander Mark II 30, 30ft - Zephyr
Posts: 78
Thanks guys. I was kinda expecting that answer. I will look into replacing. Man I have allot of projects to finish up before my may 1st launch.
__________________
Captin_Kirk is offline   Reply With Quote
Old 12-03-2010, 07:35   #10
Registered User
 
pressuredrop's Avatar

Join Date: Apr 2009
Location: West Palm Beach
Boat: Allied Seawind 30
Posts: 793
Quote:
Originally Posted by doslocos View Post
If there is any green on it replace all. .
if we are talking about bronze here, it is my understanding that there is nothing wrong with green (other then it doesnt look good) it is actually a natural protective coating. the advice i was given, Green = good, pink = BAD
__________________

__________________
pressuredrop is online now   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Testing Compression Jetexas Engines and Propulsion Systems 97 05-10-2013 20:00
Thru-Hulls in Cored Hulls ggray Construction, Maintenance & Refit 7 22-12-2009 09:07
Load Testing and Conductance Testing Joe500 Electrical: Batteries, Generators & Solar 0 02-12-2009 16:12



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:20.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.