[C320-list] Overheating Problem

[Stan]

I have to chime in on this one.  I have a 2000 vintage 320 and it warms up
to 160.  It stays at 160 whether I am idling or running 3000+ RPM.  Been
that way since day one.  Calibration problem?  Maybe.  However, the point is
that the thermostat maintains a constant temperature over the entire RPM
range.  Sounds like a thermostat that is opening half way or an impeller
problem.

Stan
"Our Little Amusement" #744


On 6/5/06, David Cardoza <dave at avaloncon.com> wrote:
>
> I think most of the thermostats on these motors are 180F so temp runs +/-
> 180F typically.  But some time ago when talking with the local Yanmar
> distributors' service person I remember him mentioning that a 160F
> thermostat existed for these motors sounds like you may have one(came up
> when I was leaking coolant through the sensor, what a mess).  Hence the
> +/-160F 150F-170F.  Only one way to find out but it's messy and may not be
> necessary (remove it and read the markings).  But if your running cooler
> vs
> hot > 190F don't know what I'd do if I was in your shoes.  Sounds like you
> fixed the real problem with the new Impeller.
>
> -----Original Message-----
> From: C320-List-bounces at catalina320.com
> [mailto:C320-List-bounces at catalina320.com] On Behalf Of Rick Onyshko
> Sent: Sunday, June 04, 2006 7:55 PM
> To: C320-List
> Subject: [C320-list] Overheating Problem
>
> I have a 3 year old Yanmar 3YGM and had an overheat alarm go off on my
> first
> trip after the winter.  I replaced the impeller, no missing vanes.  It
> seemed to run at normal temp ~ 150 for over an hour.  Today I took it out
> and had it idling while I dropped sails and put fenders out, and it did
> not
> overheat but the temp went up to about 170.  Returned to 150 when I
> started
> moving forward and the RPM went up.
>
> Not sure if anyone has any ideas or suggestions, it has typically run
> right
> at 150 pretty consistently.
>
> Thanks
>
> Rick
>
>
>
>


-- 
Stan
C320 "Our Little Amusement" #744
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