Yanmar 2GM 20(F): Raw or Fresh Water Cooled version. How can I tell? - SailNet Community

   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
 Not a Member? 
  #1  
Old 10-19-2008
Member
 
Join Date: Aug 2008
Location: New England
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
captxtina is on a distinguished road
Yanmar 2GM 20(F): Raw or Fresh Water Cooled version. How can I tell?

For the diesel (or Yanmar) junkies, how can I tell if my diesel Yanmar 2GM 20(F) is raw or fresh water cooled? I have the original manual and paperwork, but it only says, "If you have the raw water cooled version, do X," and "If you have the fresh water cooled version, do Y".

I'd like to know so I can read up on how to winterize one or the other.
danke!
__________________
Pearson 28
New England
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 10-20-2008
denby's Avatar
Senior Member
 
Join Date: Feb 2007
Location: Dead Sea, some times called Long Island Sound
Posts: 2,527
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
denby is a jewel in the rough denby is a jewel in the rough denby is a jewel in the rough denby is a jewel in the rough
The model number will tell you, the f means fresh water.
__________________
Dennis
O'Day 302

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Be careful or i will do what the voices tell me to do
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To get the most from Sailnet, follow the link in
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
's signature.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Hey stuffit "Get a life"
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 10-20-2008
Banned
 
Join Date: Nov 2002
Location: New York
Posts: 5,823
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 0
bubb2 has a spectacular aura about bubb2 has a spectacular aura about bubb2 has a spectacular aura about
Does it have a little plastic tank on the upper right side of the engine filled with pink antifreeze, then it is fresh water cooled.
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 10-20-2008
Member
 
Join Date: Aug 2008
Location: New England
Posts: 39
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
captxtina is on a distinguished road
To denby and bubb2, wow!
If it's that easy to just go off of the "F" in the model name, then great! thanks.
I'm at home (my land home) at the moment, so I'll double-check with the engine itself to look for a plastic tank with the pink antifreeze.

(yay! This forum is excellent -- I'm learning so much from y'all. thanks.)
__________________
Pearson 28
New England
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 10-20-2008
SVDistantStar's Avatar
'72 Pearson 36
 
Join Date: Aug 2006
Location: Charleston SC
Posts: 497
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
SVDistantStar is on a distinguished road
Send a message via AIM to SVDistantStar
Yes a 2GM20F would be fresh water cooled. Another easy way to tell is look at the motor. Does it have a radiator cap on a long box looking bit to one side. That would be the heat exchanger.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1972 Pearson 36 S.V. Distant Star
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 10-20-2008
denby's Avatar
Senior Member
 
Join Date: Feb 2007
Location: Dead Sea, some times called Long Island Sound
Posts: 2,527
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
denby is a jewel in the rough denby is a jewel in the rough denby is a jewel in the rough denby is a jewel in the rough
Cap,

What state in New England are you?
__________________
Dennis
O'Day 302

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Be careful or i will do what the voices tell me to do
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To get the most from Sailnet, follow the link in
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
's signature.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Hey stuffit "Get a life"
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 06-07-2009
Junior Member
 
Join Date: Jul 2007
Location: Maryland
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
nalplvr is on a distinguished road
I have one of those. The F engine does have a plastic tank to put anti-freeze in. Also it is raw water cooled also.Water goes to impellor and pump and out the back. Forgot to open sea-**** one day. alarm went off.shut her down. if not for fresh water cooling I may have damaged her more. All I did was burn up the impeller . ThankGod
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 06-04-2013
Junior Member
 
Join Date: Apr 2009
Posts: 1
Thanks: 1
Thanked 0 Times in 0 Posts
Rep Power: 0
sundrifter is on a distinguished road
Re: Yanmar 2GM 20(F): Raw or Fresh Water Cooled version. How can I tell?

My Yanmar says 2GM20 on the engine plate but is fresh water cooled? It has the heat exchanger, coolant reservoir etc. Should the plate read 2GM20F or could i have a modified 2GM20? I want to be sure i am referring to the right parts of the manual. Ie the 2GM20 has zincs but the 2GM20f does not. Can anyone share some insight?

Thanks,
Warren, - Vancouver British Columbia - 1979 Catalina 30
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 06-04-2013
Gary M's Avatar
Senior Member
 
Join Date: May 2006
Location: Sarnia ON
Posts: 675
Thanks: 3
Thanked 3 Times in 3 Posts
Rep Power: 9
Gary M is on a distinguished road
Re: Yanmar 2GM 20(F): Raw or Fresh Water Cooled version. How can I tell?

If you have the little plastic coolant resivior you have fresh water cooling or more correctly a closed loop cooling system that circulates a fresh water/anti freeze solution through your engine.
This solution is cooled by the sea water that is pumped through the exchanger and then exits through your exhaust. The big advantage is no salt water in your engine, just the anti freeze solution that contains rust inhibitors etc.
Reply With Quote Quick reply to this message Share with Facebook
The Following User Says Thank You to Gary M For This Useful Post:
sundrifter (06-05-2013)
Reply

Quick Reply
Message:
Options

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

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
raw water pump leak on Yanmar 3Gm30F gsyversen Gear & Maintenance 24 06-13-2008 02:34 AM
Fresh or Salt Water Taste Test NauticalFishwife Gear & Maintenance 4 06-03-2008 12:04 PM
Fresh water system maureena5 Gear & Maintenance 6 03-07-2007 07:34 PM
fresh water tank, tastes like ****! nauticalrich Gear & Maintenance 6 05-24-2002 05:17 PM
Water Ballast/Manufacturer RSJ Boat Review and Purchase Forum 6 03-07-2002 06:59 PM


All times are GMT -4. The time now is 06:49 PM.

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.