Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-05-2018, 02:28 AM   #41
Senior Member
 
City: Aposentillo
Join Date: Jul 2018
Posts: 158
Quote:
Originally Posted by firehoser75 View Post
DDW and others,
Flushing your raw water side (often) with fresh water is a good way to help "stave off" marine age (basically the ravages of corrosion in the salt (air and water) environment that our salt water operated boats live in). If you flush regularly with fresh water (and store the raw water cooling side cleaned of salt water), you can greatly extend the time between having to fully service the various heat exchangers, gear coolers, aftercoolers, etc. and avoid the probability of overheating your engine (at least better of odds of doing so). Salt water in a hot environment (like inside our engine's components) will form a limestone like substance in the cooling passages which will only be removed (once hardened) by relatively aggressive measures like sending out to the rad shop for acid cleaning. Fresh water flushing will increase the time intervals between this type of (costly and/or time consuming) servicing. I just took apart my aftercooler for routine servicing (after 2 full seasons and about 400 engine hours) and there was no corrosion (even though the cooler consists of a "dog's breakfast" of dissimilar metals), and no calcium buildup at all. After properly reassembling with lots of grease, I can now leave this component for 4-5 years before servicing again, instead of having to look after it every 2-3 years. By the way, I service the cooling system more often than I could possibly "get away with", but I would rather be on the safe side. As far as zincs are concerned, I am certainly not an expert on this area, but I trust Tony Athens of Seaboard Marine. Unless I am reading his advice on this incorrectly, he says stay with zinc even if flushing with freshwater. His website has tons of great, free advice based on his training, education, and many years of experience. By the way, I am not associated in any way with him, or his business, just a grateful boater! His website is: sbmar.com.
Hope this info proves helpful,
Tom
I run a flush program using white vinegar and the a fresh water chaser. Cleans all the mineral deposits out oh h.e. and costs are nominal. No harsh chems or disposal issues either. Great for your fresh h2o system and water heater as well.
Juggerknot is offline   Reply With Quote
Old 11-11-2018, 11:38 AM   #42
DDW
Guru
 
City: San Francisco
Join Date: Apr 2018
Posts: 2,447
When you flush with vinegar, do you use full strength or a mix of fresh water?
DDW is offline   Reply With Quote
Old 11-11-2018, 03:25 PM   #43
Senior Member
 
City: Aposentillo
Join Date: Jul 2018
Posts: 158
I flush with straight white vinegar, dissolves scale and deposits very well, great for flushing all h2o tankage, fresh and holding...
Juggerknot is offline   Reply With Quote
Old 11-21-2018, 08:30 PM   #44
Senior Member
 
City: Lutz
Join Date: Jan 2016
Posts: 471
Quote:
Originally Posted by DDW View Post
The pink stuff has a lot of water in it, and is an electrolyte itself. It does not completely displace the existing water in the cooling system, but mixes with it. So the possibility of galvanic corrosion exists. While it does not seem to cause a problem with salt water boats and zinc anodes, or fresh water boats and magnesium anodes, the question remains what about fresh water boats and zinc anodes? I don't think there is a lot of collective experience there, as it is an unusual situation.
you may be 'over thinking' this a little
geoleo is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 07:51 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012