Go Back  Offshoreonly.com > Technical > General Q & A
switching from fresh water cooled to salt water cooled >

switching from fresh water cooled to salt water cooled

Notices

switching from fresh water cooled to salt water cooled

Thread Tools
 
Old 10-28-2009 | 04:22 PM
  #1  
Thread Starter
Registered
 
Joined: May 2007
Posts: 780
Likes: 0
From: Staten Island, NY
Default switching from fresh water cooled to salt water cooled

I currently have a fresh water cooled 496, to switch over to a traditionally cooled engine what is involved?
Thanks in advance!
007joe is offline  
Reply
Old 10-28-2009 | 06:30 PM
  #2  
Registered
 
Joined: Nov 2008
Posts: 236
Likes: 0
From: Plover, WI
Default

Why would you want to do that? Seems like you have to spend money and have more hassle flushing the engine after every trip to the salt. I must be missing something because I don't understand the up side of this change.
Sledge Hammer is offline  
Reply
Old 10-28-2009 | 08:09 PM
  #3  
Thread Starter
Registered
 
Joined: May 2007
Posts: 780
Likes: 0
From: Staten Island, NY
Default

my engine went so I'm looking at a used complete takeout with more hp, and considering my options..... Just curious on how much trouble it would be. I would prefer to stay fresh water cooled but don't know what will be around and budget....
007joe is offline  
Reply
Old 10-28-2009 | 08:14 PM
  #4  
Registered
 
Joined: Aug 2008
Posts: 348
Likes: 0
From: bristol,Ct
Default

if its a complete package than it would probaly bolt in the same.... it would have the raw water pump and everything it needs to run. I dont see much of a hassle. you cant find a 496HO used?
tcuda499 is offline  
Reply
Old 10-28-2009 | 08:18 PM
  #5  
Registered
 
Joined: Aug 2008
Posts: 348
Likes: 0
From: bristol,Ct
Default

in the classifieds theres 2 NEW 496 ho's for 10,995 each. Seems pretty reasonable?
tcuda499 is offline  
Reply
Old 10-29-2009 | 01:41 AM
  #6  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,273
Likes: 2,513
From: Omaha/LOTO
Default

Originally Posted by 007joe
I currently have a fresh water cooled 496, to switch over to a traditionally cooled engine what is involved?
Thanks in advance!
You have what is called closed cooling, meaning the cooling water never enters the engine and it cols the engine coolant through aheat exchanger. If you pull the bad engine, then the closed cooling system is gone. You may be able to reuse it on the new engine or just go with raw water cooled for the new engine.

BTW, closed cooling is a good thing for salt water boating.
Griff is offline  
Reply
Old 10-29-2009 | 08:33 AM
  #7  
Thread Starter
Registered
 
Joined: May 2007
Posts: 780
Likes: 0
From: Staten Island, NY
Default

I am going to try to stay with closed cooling but was curious if i came across a good deal on something that was not equipped that way what would be required if anything to make the change. tcuda, If I change engines I am looking for more than a 50 hp bump, but thanks... also can't make the move right now going to have to wait until January or February, unless some ridiculous deal comes up.
007joe is offline  
Reply
Old 10-29-2009 | 08:34 AM
  #8  
Thread Starter
Registered
 
Joined: May 2007
Posts: 780
Likes: 0
From: Staten Island, NY
Default

so griff the cooling system is entirely part of the engine? Kinda figured that but was unsure, thanks
007joe is offline  
Reply
Old 10-29-2009 | 01:07 PM
  #9  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,273
Likes: 2,513
From: Omaha/LOTO
Default

Originally Posted by 007joe
so griff the cooling system is entirely part of the engine? Kinda figured that but was unsure, thanks
No, its mainly just components bolted to the engine. You could probably make the 496 closed cooling system fit another engine. It may work for a higher HP engine as well. I'm not sure what the differences are between the 496HO and the 525efi closed cooling systems.
Griff is offline  
Reply
Old 10-30-2009 | 06:08 AM
  #10  
Registered
 
Joined: Nov 2005
Posts: 4,554
Likes: 3
From: Fredericksburg, Va
Default

just swap the cooling system parts over to the new engine...the engines are all the same....Rob
ezstriper is offline  
Reply


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.