Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 12-04-2013, 18:41   #1
Registered User

Join Date: Nov 2012
Posts: 16
Heat exchanger and engine

I recently posted a thread on holding tank sizing after which I decided to enlarge my tanks....ten gallon waste to 31gallon. This meant that I needed to move my water tank">fresh water tank to opposite side of the boat, so at the same time , I decided to increase that tank from 18 gal to 31 gallons. In doing this , I will need to mount my hot water heater above my fresh water tank. Fresh water tank will sit basically at the same level where the water heater was originally mounted. I plan on installing frameworks around the water tank and then mount the hot water tank above the tank. Hot water tank will sit approximately 14 inches higher than originally mounted. Hot water tank has heat exchanger connections and 110V coil. I

After reading some posts here, I am concerned about my water heater heat exchanger and its new location being too high, in relation to the engine(Mercruiser 350 Mag, raw water cooled only). Do I have to worry about airlocks? Will the engine pumps be able to circulate the water okay?

Thanks in advance.

Rich W is offline   Reply With Quote
Old 14-04-2013, 04:41   #2
Registered User

Join Date: Nov 2012
Posts: 16
Re: Heat exchanger and engine

So there is no confusion, the 350 mag is normally called a 5.7 Liter Mag...gas powered Mercury marine engine, with Bravo three outdrive. I think I am ok by virtue of the fact that the engine cooling system is raw water all the way--no closed loop heat exchanger. The one thing I will have to consider is that if/when I go in salt water, to avoid corrosion, I will have to install an anode or disconnect the heat exchanger lines altogether.
Rich W is offline   Reply With Quote


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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 11:26.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.