Running w/o a thermostat does what???
 

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 w/o a thermostat does what???
 

"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.

Running w/o a thermostat does what???
 

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.

Running w/o a thermostat does what???
 

"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!

Running w/o a thermostat does what???
 

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.

Running w/o a thermostat does what???
 

"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.

Running w/o a thermostat does what???
 

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.

Running w/o a thermostat does what???
 

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

Running w/o a thermostat does what???
 

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!

Running w/o a thermostat does what???
 

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!

Running w/o a thermostat does what???
 

On Jul 1, 10:03*am, Gene wrote:
On Wed, 1 Jul 2009 06:49:39 -0700 (PDT), Loogypicker





wrote:
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!

Correct! You are free to leave, grasshopper, after I burn the hell out
of your forearms....
--

Ohmmmmmmmmmmmmmmm.........
Ammmmmmmmp.............

Running w/o a thermostat does what???
 

"Loogypicker" wrote in message
...
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!

Ummmmmmmmmmmmmmmmm......... 3 cylinders in this case. NTIM (Not that it
matters)

Running w/o a thermostat does what???
 

On Jul 1, 11:55*am, "Mike Slater" wrote:
"Loogypicker" wrote in message

...
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!

Ummmmmmmmmmmmmmmmm......... 3 cylinders in this case. NTIM (Not that it
matters)- Hide quoted text -

- Show quoted text -

Uh, oh. That's sure to make the universe off kilter..........

Running w/o a thermostat - link to photo
 

"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
Here is why I decided to run without a stat for the last two years. I run
in sal****er and... yes, I always flush when I am done. Hope you do!

Photo: http://www.thespaceexplorers.com/misc/thermostat.jpg

Running w/o a thermostat does what???
 

"Gene" wrote in message
...
On Wed, 1 Jul 2009 06:49:39 -0700 (PDT), Loogypicker
wrote:

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!

Correct! You are free to leave, grasshopper, after I burn the hell out
of your forearms....
--

Forté Agent 5.00 Build 1171

"Twenty years from now you will be more disappointed by
the things you didn't do than by the ones you did do.
So, throw off the bowlines. Sail away from the safe harbor.
Catch the trade winds in your sails.
Explore. Dream. Discover." - Unknown

Grady-White Gulfstream, out of Oak Island, NC.

Homepage
http://pamandgene.tranquilrefuge.net...at/my_boat.htm



Most boat engines operate at below optimum temperature. As the salts
preciptate out at the correct operation temps. Closed cooling inboards, are
the only ones that run at a correct temperature. No thermostat and the temp
is even lower.

Running w/o a thermostat does what???
 

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

The new computer 4 strokes won't run without a thermostat.
It detects a fault and puts you in "limp home"mode.

Any idea how it detects it the missing thermostat? Based on temperature or
the physically missing part?

Running w/o a thermostat does what???
 

wrote in message
...
On Tue, 07 Jul 2009 15:55:13 GMT, "Mike Slater"
wrote:


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

The new computer 4 strokes won't run without a thermostat.
It detects a fault and puts you in "limp home"mode.

Any idea how it detects it the missing thermostat? Based on temperature
or
the physically missing part?
It looks for proper operating temperature after a given period of
time. Cars will throw a code for this too but they don't seem to give
as noticeable a "limp home" mode.
When I had the thermostat self destruct in my 60 merc it was pretty
much idle speed and beeping when I removed it. I thought about wedging
the plate open and putting it back in but I was not that far from the
house. It turned out I had a spare used one in my tool box but I
didn't see it until I knew I had the "won't run without one" problem.
I felt lucky I got the housing off and back on once without dropping
something in the water and I wasn't pushing my luck.

Speaking of a self-destructing thermostat, here is what I removed from my
neighbors boat. No wonder he had an overtemp alarm.
http://www.thespaceexplorers.com/mis...tat_broken.jpg
And if you missed the salty one I had in my motor check this out
http://www.thespaceexplorers.com/misc/thermostat.jpg