Effects of running without thermostat?
Effects of running without thermostat? What would be the negatives or running without a thermostat? I have an electric waterpump, and im looking to block off the heater ports. I have heard that the only way to safely do this is to get rid of the thermostat....
SO what would the downfalls be?
SO what would the downfalls be?
In a lot of cases running no thermostat will cause overheating because the coolant doesn't stay in the radiator long enough to remove heat out of the coolant. Not to mention in the winter you will freeze your *** off.....
Teching In
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First I can't imagine why you'd want to block off the heater ports unless you had a core leak that you didn't want to fix. The heater core has no negative effects on performance.
Second I can't imagine why you'd want to run without a thermostat. It's purpose is to ensure your engine is running a a consistent temperature. Taking it out would allow your engine temperaure to cycle widely, especially in stop and go situations.
I've also heard (aleit an very old school tale) that certain parts of the engine will not cool properly without the backpressure provided by the t'stat.
Second I can't imagine why you'd want to run without a thermostat. It's purpose is to ensure your engine is running a a consistent temperature. Taking it out would allow your engine temperaure to cycle widely, especially in stop and go situations.
I've also heard (aleit an very old school tale) that certain parts of the engine will not cool properly without the backpressure provided by the t'stat.
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Removing the thermostat will make the car run cooler... You can't run coolant through a radiator too fast.
First Law of Thermodynamics...
Q=mc(deltaT)
Q = heat removed
m = flow of coolant
c = specific heat capacity of coolant
deltaT = change in temperature of coolant in to coolant out
Using this equation, the faster coolant flows through a radiator, more heat will be exchanged.
First Law of Thermodynamics...
Q=mc(deltaT)
Q = heat removed
m = flow of coolant
c = specific heat capacity of coolant
deltaT = change in temperature of coolant in to coolant out
Using this equation, the faster coolant flows through a radiator, more heat will be exchanged.
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Originally Posted by kemmert
Removing the thermostat will make the car run cooler... You can't run coolant through a radiator too fast.
First Law of Thermodynamics...
Q=mc(deltaT)
Q = heat removed
m = flow of coolant
c = specific heat capacity of coolant
deltaT = change in temperature of coolant in to coolant out
Using this equation, the faster coolant flows through a radiator, more heat will be exchanged.
First Law of Thermodynamics...
Q=mc(deltaT)
Q = heat removed
m = flow of coolant
c = specific heat capacity of coolant
deltaT = change in temperature of coolant in to coolant out
Using this equation, the faster coolant flows through a radiator, more heat will be exchanged.
quad phi deltaZZ= never gets up to operating temp and will never pass smog.
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Removing the thermostat will make the car run cooler... You can't run coolant through a radiator too fast. First Law of Thermodynamics... Q=mc(deltaT) Q = heat removed m = flow of coolant c = specific heat capacity of coolant deltaT = change in temperature of coolant in to coolant out Using this equation, the faster coolant flows through a radiator, more heat will be exchanged. 07-08-2005 09:21 AM
for example Q=5*20*10 if you increase the flow maybe it would change to Q=10*20*5 your still getting the same amount of heat removed.
Originally Posted by BrandonSS
Who the hell drives their Camaros/Ta's in winter
And who really follows smog rules...
And who really follows smog rules...
My little sister has a 88 Monte with a 400sbc in it. We tried removing her Tstat just to get up to the auto parts store and it overheated pretty bad. Granted 400's run hot. But still.
Originally Posted by wrencher
Have run lots of race motors w/o thermostats. You have to use restrictors in place of the thermostat. All the big performance site's sell 'em, jegs, summit etc.
I'm with him. Coolant will still flow but should keep you from overheating.
I have never heard of no thermostat engine running hot but anything is possible. I took my thermostat apart and just put the body back in there for some restriction. In the winter ill put a thermostat back in there.
Originally Posted by Mattism78
Drive mine year round... Gotta love Florida.
My little sister has a 88 Monte with a 400sbc in it. We tried removing her Tstat just to get up to the auto parts store and it overheated pretty bad. Granted 400's run hot. But still.
My little sister has a 88 Monte with a 400sbc in it. We tried removing her Tstat just to get up to the auto parts store and it overheated pretty bad. Granted 400's run hot. But still.
I had a 91 rx7 that would overheat for no reason...so i gutted the t stat and put it back in...without the middle...car never overheated again, but in the winter..it took about 10-15 miinutes for me to get heat....damn i wish i had money at the time to put a ls1 in that car.
Kids these days......... Race cars don't run air conditioning either. Hell..... they don't even have tread on the tires. Im just sayin'..... no stat will gain nothing but inconvenience. No more heater, no more defroster and no horsepower gain whatsoever. LS1's run hot from the factory for one reason. GM built this bad *** motor and the only way it passes emissions is to be hot. ( A big deal here in Cal.). So, every two years run the thing to a boil, get your certificate, and put the 160 back in it. Any motor that barley sees over a hundred degrees is never at operating temp.
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[QUOTE=kemmert;3239886]Removing the thermostat will make the car run cooler... You can't run coolant through a radiator too fast.
First Law of Thermodynamics...
Q=mc(deltaT)
Q = heat removed
m = flow of coolant
c = specific heat capacity of coolant
deltaT = change in temperature of coolant in to coolant out
Using this equation, the faster coolant flows through a radiator, more heat will be exchanged.[/QUOTE
As already mentioned,with no thermostat you will lose your passenger compartment heat due to the lower temperature of the coolant. The engine coolant is not getting up to optimal temperatures because it is not being restricted by the thermostat and given sufficient time to absorb the heat resulting from combustion.Without a thermostat,the coolant is being circulated more quickly through the water jackets of the engine,so
there-fore it is not as efficient at "absorbing" the heat that the engine produces.As a result,yes your engine coolant temp will be lower,but it can result in higher combustion temperatures and possibly cause damage
to the engine.The bottom line,use a thermostat in your vehicle is you want to prolong the life of your engine.You may not be running coolant too fast through the radiator,but you are moving it too quickly through the water jackets thus reducing efficiency.
First Law of Thermodynamics...
Q=mc(deltaT)
Q = heat removed
m = flow of coolant
c = specific heat capacity of coolant
deltaT = change in temperature of coolant in to coolant out
Using this equation, the faster coolant flows through a radiator, more heat will be exchanged.[/QUOTE
As already mentioned,with no thermostat you will lose your passenger compartment heat due to the lower temperature of the coolant. The engine coolant is not getting up to optimal temperatures because it is not being restricted by the thermostat and given sufficient time to absorb the heat resulting from combustion.Without a thermostat,the coolant is being circulated more quickly through the water jackets of the engine,so
there-fore it is not as efficient at "absorbing" the heat that the engine produces.As a result,yes your engine coolant temp will be lower,but it can result in higher combustion temperatures and possibly cause damage
to the engine.The bottom line,use a thermostat in your vehicle is you want to prolong the life of your engine.You may not be running coolant too fast through the radiator,but you are moving it too quickly through the water jackets thus reducing efficiency.
Last edited by lovescamaros28; Feb 2, 2011 at 08:52 AM.
