Go Back  Offshoreonly.com > Technical > General Q & A
What temp. will freeze a 496HO not winterized? >

What temp. will freeze a 496HO not winterized?

Notices

What temp. will freeze a 496HO not winterized?

Thread Tools
 
Old 11-03-2007 | 12:21 PM
  #11  
Dr Ralphy's Avatar
Registered
 
Joined: Sep 2007
Posts: 86
Likes: 0
From: Columbus, Ohio
Default

I put a light under my oil pan as well. It helps for 20 degrees warmer in the motor compartment. I also have a remote temperature sensor that I can read in the house. If it goes below 40F I get excited and buy the antifreeze.
Dr Ralphy is offline  
Reply
Old 11-03-2007 | 09:13 PM
  #12  
Registered
 
Joined: Aug 2004
Posts: 94
Likes: 0
From: Kentucky
Smile

http://www.boatsafeheaters.com/prodBSAT.htm

I have used these for years to extend boating season.
orthos1 is offline  
Reply
Old 11-03-2007 | 09:31 PM
  #13  
Elite Marine's Avatar
Banned
 
Joined: Aug 2002
Posts: 5,658
Likes: 1
From: IL
Default

Originally Posted by Pure Energy
After you close the hatch how do you know if the light is on????
You always crack me up!!!
Elite Marine is offline  
Reply
Old 11-03-2007 | 11:54 PM
  #14  
99fever27's Avatar
Registered
 
Joined: Dec 2005
Posts: 1,538
Likes: 1
From: Washington
Default

I heard somewhere that 24* for 24hrs was the rule of thumb..but I dunno!
99fever27 is offline  
Reply
Old 11-04-2007 | 02:06 AM
  #15  
Griff's Avatar
Charter Member # 55
25 Year Member
Charter Member
Super Moderators
 
Joined: Oct 2000
Posts: 20,271
Likes: 2,512
From: Omaha/LOTO
Default

Originally Posted by 99fever27
I heard somewhere that 24* for 24hrs was the rule of thumb..but I dunno!

Correct, for a good rule of thumb. I've had a boat sit in the water when it got down to 19* before. I was nervous, but there were 50+ other boats right there with mine. All was fine.
Griff is offline  
Reply
Old 02-07-2008 | 04:10 PM
  #16  
eddie's Avatar
Platinum Member
15 Year Member
Platinum Member
 
Joined: Oct 2007
Posts: 2,256
Likes: 21
From: Osage Beach, Missouri - 28mm
Default

Originally Posted by lakeoftheozarks
Tonight it is supposed to get in the high 20's and my boat is not winterized. I pumped the system out with the hand pump but understand that water is probably still in the motor. I also plan on lowering it in the water tonight. Is this over cautious or necessary? Thanks for any comments, I am holding out for a couple more weekends of boating.
Most of the people I know at the lake with 496 engines don't do much more than pump out the motors with the blue pump and leave them on the lift as far as the engines go. I do the fresh water tanks and suck the water out of the bilige, but when we want to head out I just pull the pins and take the boat out next time we are down and it's nice out. It's been working great for us for two years.
eddie is offline  
Reply
Old 02-07-2008 | 05:36 PM
  #17  
Trippin's Avatar
Registered
20 Year Member
 
Joined: Dec 2003
Posts: 500
Likes: 3
From: St.Simons Is, GA
Talking

Two months later I'll give my input.

For those of you who don't know, the 496's are closed cooled. The hand pump will eliminate the residual water left in the raw water system. If you really want to extra-protect your raw water system, then run a 50/50 mix of antifreeze (environmentally friendly of course) through the raw water system via a flush attachment, a pump and a bucket.

Also, if you're storing the boat outside, tape or wrap the prop and propshaft housing to prevent water from entering the gearcase housing. I have seen the water freeze and crack the gearcase if left therin.

Of course never store your boat with the drives in the up position.

Last edited by Trippin; 02-07-2008 at 05:41 PM.
Trippin is offline  
Reply
Old 02-07-2008 | 06:58 PM
  #18  
J-Bonz's Avatar
Registered
20 Year Member
 
Joined: Dec 2003
Posts: 5,978
Likes: 499
From: Cleveland, OH / Pewaukee, WI
Default

Originally Posted by nordic95
Put a metal clamp on spot light in the bilge.One 100 watt bulb will keep the bilge about 15 to 20 degrees warmer then the outside air temp.I do this every year and It has worked out great for late season boating.I leave the plug tail of the light hanging outside the cover so when I leave in the morning I just unplug for the day.

Nordic95
Thats what we use in WI to keep our outside frigerators warm in the winter
J-Bonz is offline  
Reply
Old 02-07-2008 | 07:37 PM
  #19  
Registered
 
Joined: Aug 2006
Posts: 171
Likes: 0
From: Costa Mesa, CA
Default

Originally Posted by Trippin
Of course never store your boat with the drives in the up position.
Why not? I've heard this before, but can't quite see the logic in it. (I'm just curious, not trying to start anything.)
JohnnyG is offline  
Reply
Old 02-07-2008 | 10:10 PM
  #20  
US1 Fountain's Avatar
Ginger or Mary Ann?
25 Year Member
Charter Member
 
Joined: Oct 2000
Posts: 11,030
Likes: 9
From: L
Default

Originally Posted by JohnnyG
Why not? I've heard this before, but can't quite see the logic in it. (I'm just curious, not trying to start anything.)

Snow and rain can get past the prop that can't drain out and sit in the lower unit waiting for that freezing spell. You see alot of boats shrinkwrapped with a piece covering the prop hub to keep water out.
US1 Fountain 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.