: Nauset Beach
Subject: Re: Stus-List thermostat on 3QM30H > Exhaust Elbow Cleaning
Rick &/or anyone else,
Is there a recommended “service interval” for checking / cleaning the exhaust
elbow on a fresh water cooled 3GM30F? Mine was last checked 3-4 years ago and
have probably had 100
AM
To: cnc-list@cnc-list.com
Cc: Rick Brass
Subject: Re: Stus-List thermostat on 3QM30H
Bill;
A “raw” water cooled engine passes water from outside the boat ( in your case
lake water) through the engine for cooling. A “fresh” water cooled engine has
antifreeze in the engine and a heat exchanger
rose.blogspot.com/
On May 28, 2018, at 9:16 PM,
cnc-list-requ...@cnc-list.com<mailto:cnc-list-requ...@cnc-list.com> wrote:
Date: Mon, 28 May 2018 20:27:42 -0400
From: wwadjo...@aol.com<mailto:wwadjo...@aol.com>
To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>
Subject:
st-requ...@cnc-list.com wrote:
Date: Mon, 28 May 2018 20:27:42 -0400
From: wwadjo...@aol.com
To: cnc-list@cnc-list.com
Subject: Re: Stus-List thermostat on 3QM30H
Message-ID: <163a94b1b92-c9a-17...@webjas-vab075.srv.aolmail.net>
Content-Type: text/plain; charset="utf-8"
Thanks f
9:16 PM, cnc-list-requ...@cnc-list.com wrote:
>
> Date: Mon, 28 May 2018 20:27:42 -0400
> From: wwadjo...@aol.com <mailto:wwadjo...@aol.com>
> To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com>
> Subject: Re: Stus-List thermostat on 3QM30H
> Message-ID: <1
kley
Subject: Re: Stus-List thermostat on 3QM30H
Absolutely leave 2 thermostats. I never suggested otherwise. Without a
thermostat in one or both of the ports it will act as though the thermostat is
wide open all the time providing maximum cooling and the engine will likely
never come u
tall that elbow.
Thanks,
Brian
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Rick Brass
via CnC-List
Sent: Monday, May 28, 2018 10:16 AM
To: cnc-list@cnc-list.com
Cc: Rick Brass
Subject: Re: Stus-List thermostat on 3QM30H
Bill;
A “raw” water cooled engine pa
.
Rick Brass
Washington, NC
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh Muckley
via CnC-List
Sent: Sunday, May 27, 2018 11:04 AM
To: C&C List
Cc: Josh Muckley
Subject: Re: Stus-List thermostat on 3QM30H
Absolutely leave 2 thermostats. I never sugge
via CnC-List
Date: 5/27/18 06:27 (GMT-08:00) To:
cnc-list@cnc-list.com Cc: wwadjo...@aol.com Subject: Re: Stus-List thermostat
on 3QM30H
Josh,
I have a drawing from yanmar manual, not quite same as yours. My thermostat
cover has bolt pattern different..fore and aft and side to side..I am
Got it, thanks for your input...
Bill
Sent from AOL Mobile Mail
On Sunday, May 27, 2018 Josh Muckley via CnC-List wrote:
Absolutely leave 2 thermostats. I never suggested otherwise. Without a
thermostat in one or both of the ports it will act as though the thermostat is
wide open all the ti
Absolutely leave 2 thermostats. I never suggested otherwise. Without a
thermostat in one or both of the ports it will act as though the thermostat
is wide open all the time providing maximum cooling and the engine will
likely never come up to temperature. I was only trying to explain the
dispari
Josh,
Thanks, but I must have older or newer than that diagram (1981 boat). My
thermostat housing is on top of exhaust manifold, square in shape with 4
distinct chambers, two of which are machined to accept thermostats..
I think I will just leave as has been for the 7 years I have owned boat
Bill,
Check out page 162 in the following link. On page 182 it describes the
thermostat setpoints. 160 = fresh and 108 =raw.
https://drive.google.com/file/d/0B8pEh5lnvP1yenJtR1BxWjhqZGs/view?usp=drivesdk
Josh
On Sun, May 27, 2018, 9:28 AM William Walker via CnC-List <
cnc-list@cnc-list.com> w
So your engine IS raw water cooled. This confirms my suspicion that the
dual thermostat is part of the raw water design of the HM/GM/QM series.
Typically the raw water thermostats run cooler than the fresh. This helps
prevent localized boiling and scale formation in the engine. I believe
165°F i
Josh,
I have a drawing from yanmar manual, not quite same as yours. My thermostat
cover has bolt pattern different..fore and aft and side to side..I am always
confused by "raw water, fresh water" thing...I draw lake water in and through
engine and out...no antifreeze or heat exchange..just
Is your engine fresh water or raw water cooled. By the model number I'm
guessing that it is raw water cooled. I don't have the manuals for the QM
series but believe that they are the predecessor to the HM and GM. As such
many of the parts are interchangeable and much of the design is the same.
I
Good morning,
Yesterday I removed the thermostat cover on top of the exhaust manifold to
replace the thermostat which I suspected was bad. I have a yanmar service
manual which has detailed drawings of the exhaust manifold on this sea water
cooled engine. To my surprise when I removed the c
17 matches
Mail list logo
