I am not trying to stir anything up by asking this question, but because the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat I
decided to just run without it. I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at about
90 degrees. I am getting ready to advise that my neighbor do the same thing
and I just wanted to hear some comments first. What will it hurt?

Mike

"Mike Slater" wrote in message
news:way2m.764901$yE1.593293@attbi_s21...
I am not trying to stir anything up by asking this question, but because
the water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat
I decided to just run without it. I have been doing it for two seasons
now. I measured the water temperature at the powerhead with a laser unit at
about 90 degrees. I am getting ready to advise that my neighbor do the
same thing and I just wanted to hear some comments first. What will it
hurt?

Mike


Running without a thermostat can cause air to get in the fuel lines.

Just kidding.

On Jun 30, 7:34*pm, "Mike Slater" wrote:
I am not trying to stir anything up by asking this question, but because the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat I
decided to just run without it. *I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at about
90 degrees. *I am getting ready to advise that my neighbor do the same thing
and I just wanted to hear some comments first. *What will it hurt?

Mike

Probably not, but one thing that you need to remember mike, is that
the engine does have a recomended operating temperature. and the
thermostat helps hold the water int he engine jacket so that the
proper temp can be achieved. And by running without the thermostat,
it can actually change your performance. also without it, you could
have a cyl or so running actually too warm and others too cold. or one
side of the engine running hotter than the other thusly doing wierd
things to the cylinder bore over time. Not counting getting all that
muck lodged up into the cylinder jacket.

I dont' know. it might not hurt or change a thing, but it was put
there for a reason. Maybe the thermostat is better at use when
running in extremely cold temps.

"Eisboch" wrote in message
...

"Mike Slater" wrote in message
news:way2m.764901$yE1.593293@attbi_s21...
I am not trying to stir anything up by asking this question, but because
the water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat
I decided to just run without it. I have been doing it for two seasons
now. I measured the water temperature at the powerhead with a laser unit
at about 90 degrees. I am getting ready to advise that my neighbor do the
same thing and I just wanted to hear some comments first. What will it
hurt?

Mike


Running without a thermostat can cause air to get in the fuel lines.

Just kidding.


GOOD ONE! I actually paused for half a sec and thought.... "what?... how?"
Dont do that!

On Wed, 01 Jul 2009 00:34:36 GMT, "Mike Slater"
wrote:

I am not trying to stir anything up by asking this question, but because the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat I
decided to just run without it. I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at about
90 degrees. I am getting ready to advise that my neighbor do the same thing
and I just wanted to hear some comments first. What will it hurt?

Mike

Will certainly take longer to (or never) reach proper operating
temperature. Won't burn fuel as efficiently, that's for sure.

"Gene" wrote in message
...
On Wed, 01 Jul 2009 00:34:36 GMT, "Mike Slater"
wrote:

I am not trying to stir anything up by asking this question, but because
the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat
I
decided to just run without it. I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at
about
90 degrees. I am getting ready to advise that my neighbor do the same
thing
and I just wanted to hear some comments first. What will it hurt?

Mike

Ask yourself: why is there a thermostat, anyway?
--

I have been working on engines for 30+ years and I know what purpose
nearly every part was designed to serve. Your response was basically
worthless. But thanks for trying to stimulate my brain.

On Wed, 01 Jul 2009 00:34:36 GMT, "Mike Slater"
wrote:

I am not trying to stir anything up by asking this question, but because the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat I
decided to just run without it. I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at about
90 degrees. I am getting ready to advise that my neighbor do the same thing
and I just wanted to hear some comments first. What will it hurt?

The thermostat is there to maintain the engine at its designed
operating temperature. By running it cooler you may be sacrificing
some performance and fuel economy, but even worse, you may be
increasing engine wear and shortening its life.

On Tue, 30 Jun 2009 23:16:21 -0400, Gene
wrote:

On Wed, 01 Jul 2009 03:06:30 GMT, "Mike Slater"
wrote:


"Gene" wrote in message
. ..
On Wed, 01 Jul 2009 00:34:36 GMT, "Mike Slater"
wrote:

I am not trying to stir anything up by asking this question, but because
the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat
I
decided to just run without it. I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at
about
90 degrees. I am getting ready to advise that my neighbor do the same
thing
and I just wanted to hear some comments first. What will it hurt?

Mike

Ask yourself: why is there a thermostat, anyway?
--

I have been working on engines for 30+ years and I know what purpose
nearly every part was designed to serve. Your response was basically
worthless. But thanks for trying to stimulate my brain.

OK. A properly functioning thermostat sets the minimum operating
temperature for an engine. Warming an engine quickly to the optimum
temperature and holding it there reduces engine wear, deposits,
emissions, and improves fuel mileage.

You are doing yourself or your engine no favor by running without a
thermostat.

Might also have some impact on cooling system corrosion/erosion and
pump wear. That thermostat, even when open, is quite a restriction to
coolant flow. Not sure if that is a design consideration.

--Vic

On Jun 30, 10:36*pm, Gene wrote:
On Wed, 01 Jul 2009 00:34:36 GMT, "Mike Slater"
wrote:

I am not trying to stir anything up by asking this question, but because the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat I
decided to just run without it. *I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at about
90 degrees. *I am getting ready to advise that my neighbor do the same thing
and I just wanted to hear some comments first. *What will it hurt?

Mike

Ask yourself: why is there a thermostat, anyway?
--

How zen like!

On Jul 1, 9:41*am, Gene wrote:
On Wed, 1 Jul 2009 05:09:30 -0700 (PDT), Loogypicker





wrote:
On Jun 30, 10:36*pm, Gene wrote:
On Wed, 01 Jul 2009 00:34:36 GMT, "Mike Slater"
wrote:

I am not trying to stir anything up by asking this question, but because the
water cooling passages are by design so narrow in the vicinity of the
thermostat on my 1995 Merc 60hp 2-stroke Bigfoot, and small debris was
constantly lodging itself on the waterpump/impeller side of the thermostat I
decided to just run without it. *I have been doing it for two seasons now.
I measured the water temperature at the powerhead with a laser unit at about
90 degrees. *I am getting ready to advise that my neighbor do the same thing
and I just wanted to hear some comments first. *What will it hurt?

Mike

Ask yourself: why is there a thermostat, anyway?
--

How zen like!

Yes, grasshopper..... what is the sound of one thermostat missing?
--

The sound of four cylinders operating at an incorrect temperature,
master!