Yanmar 2GM HELP - Page 2 - SailNet Community
LinkBack Thread Tools
post #11 of 13 Old 02-17-2012
Senior Member
Join Date: Jan 2007
Posts: 387
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
I have a 1982 2GM, raw water cooled. I am not suggesting it is worth converting, but I do question the comment about requiring a different exhaust. Perhaps I am missing something, but if one were to add a 2nd pump, then one pump would circulate "fresh" water / antifeeze through one side of the heat exhanger and engine block, and the other would bring salt water in from the throughhull, through the other side of the heat exhanger and then could this not then go to the same mixing elbow / exhaust that is currently used ??
Please feel free to school me, if I have missed something.
Northeaster is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #12 of 13 Old 02-18-2012
Senior Member
Join Date: Sep 2006
Location: Scotland
Posts: 2,365
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 11
Northeaster :

Yes, I don't see why it would need a new exhaust elbow.

It seems irrelevant to me.

I certainly would not do the conversion. It is far too complicated, and expensive. Just watch that the raw water system doesn't freeze and it will be ok.

A raw water-cooled moter runs a bit cooler, but live with it. A bit less power, a bit more smoke (or something).

Who cares?

Last edited by Rockter; 02-18-2012 at 12:20 AM.
Rockter is offline  
Quote Quick Reply Share with Facebook
post #13 of 13 Old 02-18-2012
Senior Member
Join Date: Oct 2011
Location: Nanaimo B.C.
Posts: 3,386
Thanks: 3
Thanked 99 Times in 98 Posts
Rep Power: 6
If you go for a heat ex and raw water pump, the exhaust riser should be OK if it worked before.The pump output determines if you have to split and dump some. Better to put on bigger pulley and slow it down.The usual culprit, Anti syphon, is still important.And I am a believer in safe guards so my exhaust riser dumps to bilge when key is off.
Capt Len is online now  
Quote Quick Reply Share with Facebook

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 4jh 8te jbondy Diesel 3 10-30-2010 08:30 PM
yanmar ysb 8 ecarson General Discussion (sailing related) 0 08-25-2010 03:08 PM
Looking for a Yanmar 2GM knotslo General Discussion (sailing related) 4 03-04-2009 08:12 PM
Yanmar SB8 emptycooler Gear & Maintenance 2 07-15-2008 12:17 PM
$7,500.00 for a new Yanmar??? deniseO30 Gear & Maintenance 15 07-10-2008 12:40 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome