[C320-list] Engine and Reefing Questions

[Stan]

Hi Mike,

Sounds as though your problem worked itself out.  Just keep an eye on it the
next time you go out.  My Temp. has always read a steady 160.  I'm sure the
gauge is off.

As fas as reefing.  I've found through the years regardless of the point of
sail with the main and a 150 Jenny that 22 Kts. apparent more often than not
is the last chance to reef before things get ugly.  The question is "reef
what?".  Up wind when I HAVE to point I will reef the main to keep the
airflow smooth over the Jenny to allow me to take advantage of the apparent
wind to point higher.  If I'm out just bumping around and not worried about
pointing I will reef the Jenny.  Just because it's easier and accomplishes
the same objective.

Stan
"Our Little Amusement" #744


On 5/14/07, mike hunter <popotladreaming at yahoo.com> wrote:
>
> I'll start by saying I love this boat!  I have a couple of questions
> regarding engine temperature and what looked like steam coming out of the
> exhaust, but I'll get back to those in a bit.
>
> Friday afternoon we fueled up and went for a little cruise around the San
> Diego bay, running the engine at different RPMs.  We found another 'sweet
> spot' at 2800 and kept it there for roughly an hour.  The engine stayed at
> its normal operating temperature of just a hair below 180 degrees.
>
> Saturday morning we motor sailed to the mouth of the bay (~ 45 min.) and
> then proceeded to have a fantastic day of sailing.  It always feels so good
> to shut down the engine J.  That evening while coming in, we started the
> motor and motor sailed through the bay to the no wake zone then dropped the
> RPMs down to around 2000.  It was shortly after doing this my Wife noticed
> the temperature had risen to just a hair above 180 and there was what looked
> like steam coming out of the exhaust with the water.  She dropped the RPMs
> down to 1200 and I went below to check out the strainer.  The strainer had
> accumulated a little bit of debris but it was mostly clear.  When I came
> back up the temperature had dropped back down to normal and the 'steaming'
> had stopped.  It almost seemed like we sucked up something and then blew it
> out???
>
> My plan now is to clean the strainer, check the flow through the intake
> hose and inspect the water pump impeller - which I replaced 2 weeks ago.
>
> Finally, my engine questions:
>
> -         What is considered 'hot' for a Yanmar 3GM30F?
> -         Does the engine shut down when it reaches a certain temperature
> to prevent damage?
> -         Am I on the right path or is there something else I should look
> at?
>
> I also have a more important sailing question.  The wind varied from 8 –
> 12 knots throughout the day and the boat sailed beautifully.  At what wind
> speed do most of you reef?
>
> Thanks!
>
> Mike
> #637
>
>
> ---------------------------------
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-- 
Stan
"Our Little Amusement"
C320  #744
N 36 03' 15"
W 114 48' 16"
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