Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 21-04-2020, 01:39   #16
Registered User

Join Date: Mar 2010
Posts: 60
Re: Flushing raw water system with fresh water

Leave the seacock open during flushing, and there’ll be no danger of flooding through the exhaust. Before the engine is started, and after it has stopped, excess fresh water will flow harmlessly out of the raw water intake.
As long as a decent size water hose is used, and dock water pressure is reasonable, and motor is run at idle speed, it will not be drawing any salt water thru the intake, and the strainer and intake will get a backflush after the motor is turned off.
On my boat, the Motor, head, deck wash and bait well are fed from the same large intake, so after shutting down the motor, I can flush these systems with fresh as well, eliminating the rotten egg odor syndrome!
__________________

kapnd is offline   Reply With Quote
Old 21-04-2020, 20:55   #17
Registered User

Join Date: Sep 2008
Location: Washington State, North Cascades
Boat: Valiant 40
Posts: 103
Re: Flushing raw water system with fresh water

On merchant vessels that always operate in salt water, sea life builds-up and eventually clogs everything up. It can be terrible, with mussels in all of the salt water service sea chests/strainers/piping... That same vessel, if it sails into a fresh water port for half a day every few weeks, will stay clean as a whistle. Critters that thrive in salt water don’t do so well in fresh water, and vice versa. If the vessel has been in salt water for a very long period of time however, the fresh water flush can be hazardous, as the accumulated salt water critters all die at once and clog the piping/heat exchangers... Don’t ask me how I know this��
Of course on ships, these water systems are circulating water 24/7/365.
__________________

bongo is offline   Reply With Quote
Old 22-04-2020, 07:10   #18
Registered User

Join Date: Oct 2010
Location: TX
Boat: Whitby 42
Posts: 219
Re: Flushing raw water system with fresh water

Sounds like one of those things where the cure is worse than the disease.
BobHorn is offline   Reply With Quote
Old 28-04-2020, 02:59   #19
Registered User

Join Date: May 2013
Location: Poole
Boat: Parkstone Bay 21
Posts: 140
Re: Flushing raw water system with fresh water

If the set-up is already in your boat, then use it. As previous posters have said, usea bucket as near as possible to the same level as the raw water intake (so that 1. the engine pump is doing "roughly" the same work, 2. you're not over- pressuring the system using mains pressure). it'll take a few minutes adjustment of the mains tap to keep the bucket topped to the correct level (that is, quantity of water in = water out: if it's too low, you will empty the bucket, and eventually the pump will run dry, engine overheat etc; if it's too high, you fill the bilge with fresh water). I flush mine once/twice a season. In the winter time, it's a good way of getting some antifreeze/inhibitor into the engine. But, of course, many people just don't bother at all.
__________________

parkstone bay is offline   Reply With Quote
Reply

Tags
flushing, raw water, water

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Would flushing raw water side w/fresh H20 reduce corrossion? basssears Engines and Propulsion Systems 22 24-09-2018 17:35
Flushing raw water system Clipper4730 Engines and Propulsion Systems 5 18-06-2017 11:33
flushing fresh water cooling system on W-46 westerbeke rlg Engines and Propulsion Systems 5 26-03-2014 16:00
Flushing a raw water cooled Yanmar Solitude Engines and Propulsion Systems 4 14-04-2009 17:11

Advertise Here


All times are GMT -7. The time now is 20:26.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.