SailNet Community - Reply to Topic

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance > Heat Exchanger help
 Not a Member? 


Thread: Heat Exchanger help Reply to Thread
Title:
  

By choosing to post the reply below you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below


Topic Review (Newest First)
05-20-2008 05:57 PM
sendrom Perhaps you have a problem with the shaft alignment? Even if you ran the engine at the dock on forward I don't think you did it in full power did you? In which case it would overheat only on water when in cruise speeds...
05-08-2008 10:50 PM
Freesail99
Quote:
Originally Posted by T37Chef View Post
All the previous suggestions sound right on. Last year I was having hot engine issues, did everything suggested, plus flushed the fresh water cooling system, replaced thermostat, impeller, & several hoses. Then ran a product called Barnacle Buster Concentrate from Trac Ecological through the system. I let it sit overnight and flushed it out, no more worries. I plan to do this probably every other year now.

TRAC Ecological Marine Products

This is the link I was looking for. Great stuff, worked well for me.
05-08-2008 10:13 PM
T37Chef All the previous suggestions sound right on. Last year I was having hot engine issues, did everything suggested, plus flushed the fresh water cooling system, replaced thermostat, impeller, & several hoses. Then ran a product called Barnacle Buster Concentrate from Trac Ecological through the system. I let it sit overnight and flushed it out, no more worries. I plan to do this probably every other year now.

TRAC Ecological Marine Products

05-08-2008 04:27 PM
beej67
Quote:
Also (maybe this needs to be another post) there is no raw water screen between the thru hull and raw water impeller. Shouldn't there be one to catch debris coming in? Thanks for all the help!
Yes, there definitely should be. Mine's in the bilge, near the thru hull valve.

Here's a good photo I just yoinked from Google Images, but I'm guessing it's from a power boat. (look at all that space!)

05-08-2008 04:24 PM
artbyjody Have you checked the water strainer? I had the same identical situation, and it ended up being that the water strainer was clogged with algae... (Thanks again David)... it could actually be that simple.

Most water strainer at least for diesels - are very small and under sized resulting the symptoms occurring more heavily. The reason why it is not happening at the dock is that you are not putting any load on the engine and therefore it draws less water...When motoring it draws more and the water strainer when clogged will more readily restrict the flow that is required.... so it may not be the heat exchanger after-all....(I am assuming this was something not looked at)....
05-08-2008 04:17 PM
DBboat To elaborate for you, beej67, I don't understand why it didn't heat up at the dock. I can only think of two reasons: 1. obstruction or 2. it wasn't loaded up as much as I thought it was. (No tach to verify.) Both have already been mentioned here.

The thorough cleaning is an attempt to get the boat back up to shape. I bought it used recently and it has sat for 4+ years. It was an accomplishment just breaking it loose and sailing.

I'm interested in that flush that Freesail mentioned. I've heard of Barnacle Buster and Salt Away but haven't heard if either work any better or worse than a weak acid solution.

Also (maybe this needs to be another post) there is no raw water screen between the thru hull and raw water impeller. Shouldn't there be one to catch debris coming in? Thanks for all the help!
05-08-2008 01:54 PM
Freesail99 The transmission on the Volvo will cause over heating problems, it happened to me. There is a product that can be used to flush your system and remove any obstructions. I can't find the link but I will post it as soon as I do.
05-08-2008 01:17 PM
TrueBlue That would be my assumption as well Cam. While underway, the OP most likely had the engine running at a higher RPM, than when idling in gear while tied at dock, thereby developing a higher engine temp and a need for increased coolant flow.
05-08-2008 01:13 PM
camaraderie Since you've indicated a need to clean critters from the prop and bottom there is a good chance that you have a partially clogged intake thru hull that causes heating issues when more flow is demanded under power.
05-08-2008 01:07 PM
beej67 Maybe so. In that case, dive, check the thru hull on the outside, then shut it off and check the hose between the thru hull and the strainer.

Might be just a debris problem.
This thread has more than 10 replies. Click here to review the whole thread.

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


All times are GMT -4. The time now is 02:52 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.