[C320-list] Overheating

[Henderson, David]

Brad, My 3YM30 runs at about 185 - 190 degrees at 2800 RPM.  I replaced
the temp gauge and sender a couple of summers ago, so I believe they are
functioning well; and it seems to be pumping water beautifully at the
moment.  So like I said, thermostat and exhaust elbow are next on the
list.

Don, with regard to a recall, my Yanmar dealer mechanic told me that
back around 2005/2006 Yanmar did a "sort of" recall depending on where
you lived and which exchanger your engine had. Apparently, for some
period of time around 2005 they sold them with a smaller exchanger with
fewer tubes. After numerous complaints, they directly contacted everyone
in warmer climates  -  say, roughly, Chesapeake and south  -  with the
smaller exchanger and offered a free upgrade to the larger exchanger
with more tubes.  However, if you lived in a cooler climate area, i.e.
New England where I am, you were not notified and only got the upgrade
if you raised the issue and asked for it.  Apparently at some point they
started installing the larger, upgraded units in all 3YM30's.  As it
turns out, when I opened mine up to inspect it, I already had the larger
unit with more tubes (can't recall the exact number, but I think its
around 15) so the recall wouldn't have applied to me anyway.

Perhaps someone else knows the exact number of tubes in the small and
large exchangers so you can determine which you have.  And there also
should be a way to identify which exchanger based on serial number.
Maybe a mechanic or Yanmar could provide that info.

Dave H.
Dottie B  #1049
    


Date: Mon, 22 Aug 2011 22:39:48 -0400
From: "Brad Kuether" <bkuether at comcast.net>
To: <C320-List at Catalina320.com>
Subject: Re: [C320-list] Overheating 3YM30
Message-ID: <757419A7722F4159A25B9352211F28AF at BradPC>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
	reply-type=original

Hey David (and anyone else with the 3YM) what is "hot"?

I have the 3ym30 and I am pushing 180 when running at 2100 or higher. 
Something tells me this can't be right.

I know the water has gotten warmer, but I was running 165 in the spring.

No blockage in the strainer, impeller brand new every year, what are my
next 
steps?

I don't know if I am eligible for the recall or not, but do want to take

care of it so I don't have to worry anymore.

-Brad, Mary, Monica, and Jarod
"Independence"
2004 Catalina 320 Hull 1006
Middle River, MD


Date: Mon, 22 Aug 2011 20:08:11 -0700
From: Donald Lawson <dnclaws at aol.com>
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Overheating 3YM30
Message-ID: <1F737EA9-74A6-4B24-ADCA-4960C9F80B16 at aol.com>
Content-Type: text/plain; charset=us-ascii

I run at about 160 at 2100 and push 170 at 2800 rpm on my 3YM30.  I am a
second owner. What recall?
Don #1005