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Any Reason I Really Need a Thermostat?

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Any Reason I Really Need a Thermostat?

Old 04-06-2019, 06:54 PM
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Default Any Reason I Really Need a Thermostat?

My new mercury 1995 2 stroke i'm working on has a frozen thermostat so i got rid of it. I could replace it for a cost but do i really need it? I started it up and it started peeing gobs out the tell tale motor ran very well and pretty cool too. If that is ok does anyone know if they make like a 90 degree elbow for the tell tale i would prefer to angle it a different direction now if its going to spray like a man who just drank a 12 pack of cheap beer.
Old 04-06-2019, 06:57 PM
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If you want to use excess fuel, create premature wear, and have a poor running motor leave it out, your choice.
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Old 04-06-2019, 06:58 PM
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I was taught to remove the operational portion of the t stat but reinstall the perimeter and rubber gasket. in south florida they are not necessary.
Old 04-06-2019, 07:17 PM
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A cold engine block with hot pistons and rings. Go ahead and leave it out.
Old 04-06-2019, 07:19 PM
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Originally Posted by noelm View Post
If you want to use excess fuel, create premature wear, and have a poor running motor leave it out, your choice.
Not sure how that has any effect on any of that stuff, care to explain why you think that. I could understand the more fuel in a Fuel Injected engine becauase The ECU is trying to get the block to operating temp, but i dont have a computer and im running a carb so it only runs what it does.

Originally Posted by nevets View Post
I was taught to remove the operational portion of the t stat but reinstall the perimeter and rubber gasket. in south florida they are not necessary.
i put the gasket back, but is the point of putting the permiter of the t stat back to help restrict flow?
Old 04-06-2019, 07:37 PM
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There is an ideal operating temperature. You will operate below that temperature without a properly functioning thermostat.
Old 04-06-2019, 07:50 PM
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i guess ill buy a replacement then.
Old 04-06-2019, 08:01 PM
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Also, without a thermostat you run the risk of a high speed overheat condition. Water moves so fast, the heat transfer is reduced.
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Old 04-06-2019, 08:01 PM
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The guy who built it put a T/Stat in there.You recon you smarter than him?
Old 04-06-2019, 08:20 PM
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The engine still needs to be at operating temp to efficiently work, a t-stat opens and closes to keep the engine at operating temp. I would agree, put a t-stat back in.
Old 04-06-2019, 08:26 PM
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The thermostat has a minimal effect on the pee stream and if anything taking it out would reduce the flow. The pee comes from the manifold before the thermostat so the manifold pressure would be a tiny bit less but at speed that water pump moves a lot of water. That is why you have a poppet valve..
Old 04-06-2019, 10:00 PM
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Originally Posted by Still Stoked View Post
Also, without a thermostat you run the risk of a high speed overheat condition. Water moves so fast, the heat transfer is reduced.
That’s not the way this works. There’s good reasons to have a thermostat, but slowing water down bc fast water doesn’t transfer heat is not on the list.

Go get wet on a cold day and let me know when tuning the boat at a higher speed starts to make you feel warmer bc the air is moving too fast to cool you off.
Old 04-07-2019, 01:06 AM
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Originally Posted by Still Stoked View Post
Also, without a thermostat you run the risk of a high speed overheat condition. Water moves so fast, the heat transfer is reduced.
This is an old wives tale.

OP, the thermostat is there for a reason, do you think the engine manufacturer simply decided they'd like to waste money by installing it and designing a housing etc? It is to get the engine up to operating temp as quickly as possible, and keep it as constant as possible for wear, fuel economy etc.
Old 04-07-2019, 02:19 AM
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Obviously who ever started this post - etc., etc.

Last edited by THT Mod 11; 04-07-2019 at 12:33 PM. Reason: removed insulting reply
Old 04-07-2019, 03:11 AM
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Originally Posted by tunnles View Post
Obviously who ever started this post has little to no mechanical Knowledge what so ever !!NOT EVEN THE ABSOLUTE BASICS !
Even at the age of 10 years old I knew what a thermostat was for , how it worked and why it was used where it situated and how a cooling system was used for !
Maybe this guy needs to ask a kid for the answers !!

My old car didn't have a thermostat or a water pump and like old car relied on thermoshyphen cooling system BUT that's how they were made So I ;
found the later model, genuine water pump adaptor kit and found the genuine thermostat that slid inside the top radiator hose that was an accessory for my old car ! I was even able to add a heater to the car and all this was totally unheard of !!
Thermostats come in many shapes and sizes and a list of different operating temperature ranges ! EVERY MOTOR for every use be it cats trucks tractors light planes inboard motors out board motors even big lawn mowers anything that uses liquid for cooling has and needs a thermostat. It not only controls the temperature but slows the flow of water so it can cool properly and completely !If it fast tracks through the motor It never does it job properly and warmed motors perform lots better tha cold motors as there are sensors building to operate the fuel injection system to run at the different temperature's to give the best fuel supply !So cold motors run rich and you use more fuel than at the proper operating temperature .
THINK A LITTLE !! I promise it doesn't hurt !! what I've written is just a little about cooling systems , I spent 14 years in automotive spare parts and was my job to know all and everything so when some dumb ass came to the counter and asked the same questions you asking I immediately had the answer. !
What hurts is reading your response.
Old 04-07-2019, 03:28 AM
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Originally Posted by brendanm View Post
This is an old wives tale.

OP, the thermostat is there for a reason, do you think the engine manufacturer simply decided they'd like to waste money by installing it and designing a housing etc? It is to get the engine up to operating temp as quickly as possible, and keep it as constant as possible for wear, fuel economy etc.
Actually it’s physics. And you’re comparng the heat transfer and characteristics of water and air.

And you you know the rules: Pics of old wife please!!!
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Old 04-07-2019, 03:41 AM
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Originally Posted by tunnles View Post
Obviously who ever started this post has little to no mechanical Knowledge what so ever !!NOT EVEN THE ABSOLUTE BASICS !
Even at the age of 10 years old I knew what a thermostat was for , how it worked and why it was used where it situated and how a cooling system was used for !
Maybe this guy needs to ask a kid for the answers !!

My old car didn't have a thermostat or a water pump and like old car relied on thermoshyphen cooling system BUT that's how they were made So I ;
found the later model, genuine water pump adaptor kit and found the genuine thermostat that slid inside the top radiator hose that was an accessory for my old car ! I was even able to add a heater to the car and all this was totally unheard of !!
Thermostats come in many shapes and sizes and a list of different operating temperature ranges ! EVERY MOTOR for every use be it cats trucks tractors light planes inboard motors out board motors even big lawn mowers anything that uses liquid for cooling has and needs a thermostat. It not only controls the temperature but slows the flow of water so it can cool properly and completely !If it fast tracks through the motor It never does it job properly and warmed motors perform lots better tha cold motors as there are sensors building to operate the fuel injection system to run at the different temperature's to give the best fuel supply !So cold motors run rich and you use more fuel than at the proper operating temperature .
THINK A LITTLE !! I promise it doesn't hurt !! what I've written is just a little about cooling systems , I spent 14 years in automotive spare parts and was my job to know all and everything so when some dumb ass came to the counter and asked the same questions you asking I immediately had the answer. !
your the dumb ass!
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Old 04-07-2019, 03:58 AM
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Originally Posted by Still Stoked View Post


Actually it’s physics. And you’re comparng the heat transfer and characteristics of water and air.

And you you know the rules: Pics of old wife please!!!
Weird, when I was doing physics in school, the faster the liquid moved the faster the heat transfer in convection. Perhaps physics has moved on since then.
Old 04-07-2019, 04:20 AM
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Originally Posted by tunnles View Post
Obviously who ever started this post has little to no mechanical Knowledge what so ever !!NOT EVEN THE ABSOLUTE BASICS !
Even at the age of 10 years old I knew what a thermostat was for , how it worked and why it was used where it situated and how a cooling system was used for !
Maybe this guy needs to ask a kid for the answers !!

My old car didn't have a thermostat or a water pump and like old car relied on thermoshyphen cooling system BUT that's how they were made So I ;
found the later model, genuine water pump adaptor kit and found the genuine thermostat that slid inside the top radiator hose that was an accessory for my old car ! I was even able to add a heater to the car and all this was totally unheard of !!
Thermostats come in many shapes and sizes and a list of different operating temperature ranges ! EVERY MOTOR for every use be it cats trucks tractors light planes inboard motors out board motors even big lawn mowers anything that uses liquid for cooling has and needs a thermostat. It not only controls the temperature but slows the flow of water so it can cool properly and completely !If it fast tracks through the motor It never does it job properly and warmed motors perform lots better tha cold motors as there are sensors building to operate the fuel injection system to run at the different temperature's to give the best fuel supply !So cold motors run rich and you use more fuel than at the proper operating temperature .
THINK A LITTLE !! I promise it doesn't hurt !! what I've written is just a little about cooling systems , I spent 14 years in automotive spare parts and was my job to know all and everything so when some dumb ass came to the counter and asked the same questions you asking I immediately had the answer. !
Why are you still here? Members can't even effectively block you; your posts are so god-awful stupid that people repeatedly quote them (due to the incredulity) so anyone who blocks you would see them anyway.......
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Old 04-07-2019, 04:40 AM
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Not necessario. I also remove all unnecessary washers and cotter pins. All those extra parts are there to keep parts suppliers happy.

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