Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-03-2017, 20:23   #16
Registered User
 
01kiwijohn's Avatar

Join Date: Mar 2014
Location: Tacoma, Washington, USA
Boat: Casacde 36
Posts: 285
Images: 1
Re: Temp guage 2qm20 yanmar

looks like you found it and it appears to be a raw water cooled alright. There may not be a thermostat, on some of those older engines, but aim for an operating temp of a little less than 140 deg. F.
Run some Salt Away thru it once in a while, to minimize internal clogging.
__________________

__________________
01kiwijohn is offline   Reply With Quote
Old 01-03-2017, 20:43   #17
Registered User
 
01kiwijohn's Avatar

Join Date: Mar 2014
Location: Tacoma, Washington, USA
Boat: Casacde 36
Posts: 285
Images: 1
Re: Temp guage 2qm20 yanmar

Oh my goodness, what are all those wire nuts doing in there?? While you're under the hood, fix that too.
__________________

__________________
01kiwijohn is offline   Reply With Quote
Old 01-03-2017, 20:57   #18
Registered User

Join Date: Sep 2014
Location: New London, NH
Boat: Intrepid 9 meter, 29.5 feet
Posts: 91
Re: Temp guage 2qm20 yanmar

I have a 2GM20F (freshwater cooled). The manual doesn't say anything about zincs. I was assured by someone that this engine does not have them. Help guys; where are they, and what do they look like?
__________________
Old Swampy is offline   Reply With Quote
Old 01-03-2017, 21:20   #19
Registered User
 
01kiwijohn's Avatar

Join Date: Mar 2014
Location: Tacoma, Washington, USA
Boat: Casacde 36
Posts: 285
Images: 1
Re: Temp guage 2qm20 yanmar

they don't. quite normal
__________________
01kiwijohn is offline   Reply With Quote
Old 02-03-2017, 05:47   #20
Registered User
 
sailinbob1's Avatar

Join Date: Mar 2015
Location: Tampa, Fl
Boat: 1972. allied chance 30 30
Posts: 87
Re: Temp guage 2qm20 yanmar

Quote:
Originally Posted by 01kiwijohn View Post
Oh my goodness, what are all those wire nuts doing in there?? While you're under the hood, fix that too.
Lol.... I'm refitting the entire boat. I've ordered a new paneltropics electrical distribution panel, and am adding a bunch of electronics. One thing at a time. She's a mess. I don't even want to go into the carpentry work,and,if you think the wire nuts are bad,you should see the battery box! I'm just one guy,and I work,so I pick a project I can tackle, depending on it's priority,in the operation of the boat. The old if it ain't broke approach. I'll be hauling her out this summer, and I'll deal with all the electrical them,but thanks for your input.
__________________
sailinbob1 is offline   Reply With Quote
Old 02-03-2017, 05:51   #21
Registered User
 
sailinbob1's Avatar

Join Date: Mar 2015
Location: Tampa, Fl
Boat: 1972. allied chance 30 30
Posts: 87
Re: Temp guage 2qm20 yanmar

They are on the top of the engine. You'll see a plate with 5 bolts. One at each corner,and one dead center. Forward, and after. Can't speak too the freshwater cooled.Click image for larger version

Name:	1488459094440.jpg
Views:	32
Size:	110.4 KB
ID:	142287
__________________
sailinbob1 is offline   Reply With Quote
Old 02-03-2017, 17:03   #22
Registered User
 
sailinbob1's Avatar

Join Date: Mar 2015
Location: Tampa, Fl
Boat: 1972. allied chance 30 30
Posts: 87
Re: Temp guage 2qm20 yanmar

Well,I ended up at Advanced Auto,and bought a Bosh water temperature guage, that came with several adapters. First try, and water everywhere! Lol.... Thought that fitting went in a little to easily. Found the proper adapter, thank heaven,and (oh joy!) now I have an operating temperature guage. Only registers 120,on a 250 guage, but an earlier contributor suggested it shouldn't run over 140,so, I figure , I'm golden. It was where I thought, just above the alternator, on the plate housing the forward engine zink. In case anyone wants to know. Won't go into the trials and tribulations,but it was a bit of an adventure.Click image for larger version

Name:	1488499399309.jpg
Views:	30
Size:	97.6 KB
ID:	142339
__________________
sailinbob1 is offline   Reply With Quote
Old 02-03-2017, 17:05   #23
Registered User
 
sailinbob1's Avatar

Join Date: Mar 2015
Location: Tampa, Fl
Boat: 1972. allied chance 30 30
Posts: 87
Re: Temp guage 2qm20 yanmar

Click image for larger version

Name:	1488499506572.jpg
Views:	27
Size:	92.1 KB
ID:	142341
__________________

__________________
sailinbob1 is offline   Reply With Quote
Reply

Tags
2qm20, yanmar

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Measuring eng temp with IR guage pwilletts Engines and Propulsion Systems 14 04-10-2016 14:28
Westerbeke 46 Temp Sender vs. Temp Switch zboss Engines and Propulsion Systems 8 29-10-2013 22:11
Bad temp guage or sending unit? kmaz Engines and Propulsion Systems 32 13-05-2013 04:51
Looking for used Yanmar 2QM20 cylinder head. tylerz Engines and Propulsion Systems 4 04-03-2013 13:24
Yanmar Compression Guage AaronJ Engines and Propulsion Systems 8 10-08-2009 18:39



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 16:12.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.