Question:

Is it better to take the thermostat out to make your car run cooler?

by Guest33170  |  earlier

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1968 buick wildcat.

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  1. do not take the thermostat out of your car, why because your car needs to run at a prescribed temperature.  Without the thermostat the car operates at a much lower temperature that is optimal.  With a higher temp, the fuel burns cleaner and etc,  


  2. No It needs the pressure to force water thru the block.

  3. does it have the 430 in it? Those motors are screamers!!!!! :) one of the fastest BIG cars around!!  You can purchase thermostats that open at 170 or 160 degrees as opposed to some that open at 180 190 and 200.... If you cant find one, use a restrictor(for the backyard mechanic, just use your old thermostat, by taking the valve off of it, and viola, you have a restrictor) Ive done this on high compression, high heat Olds v-8s before with no problems, cant imagine a big cast iron heat sink like a 430 will have a problem...... Keep that motor running strong!!!!

  4. No. If your car is running hot. There's something making it run hot. Is the fan shroud still on it. Without it the fan will not pull the air across the radiator right.

    Check the radiator cap. If it does not hold pressure. Your coolant will heat up sooner. Water =212 degrees. Mixed with anti-freeze = 220-230 degrees.

    You can pressure fluch the radiator and block to get all the old coolant out of there. Then add new coolant.

    Do you have a clutch on your fan? If so check to see if the clutch is bad. Bring to operating temp. and then turn off. If you can move the fan with you hand then the clutch it bad, replace it or get a flex fan.

    Try puting a diffrent thermostate in it. If you have a low temp thermostate in during the summer, it will stay open all the time. The coolant will not stay in the radiator long enough to cool down.

    Are you losing coolant? Check for leaks. Low coolant level will make it run hotter. If you can not find any leaks check coolant to see if you have oil in it. Check oil to see if you have coolant in it (will be a milky color).If you do you have bigger problems. Ahead gasket and or cracked head.

    Is this the factory motor? If it is the motor was designed to run on leaded gas. Think about using a lead additive.

    that's all I have on the subject

  5. No.  Depending on where you live, this can actually cause the car to overheat.  If you live in one of the hotter climates.

    Water is not allowed to "rest" in the radiator and cool down before recirculating to the block.  whent he thermostat is closed, the coolant is in the radiator, with forced air bringing the temperature down before being sent back through the block.

    Also, when the thermostat is removed, it can take longer for the car to warm up.  For those same reasons, in winter the coolant is not sitting in the block heating up, it is constantly circulating,  

  6. Nope.  Put in an oil cooler instead.

  7. taking it out can make you use more gas, because it makes the engine too cold and can,t burn up the fuel. also a thermostat controls the cooling system. just get another thermostat or it could be something else that,s making your car overheat. by the way, that,s a nice car.

  8. Not necessarily.

    The thermostat does somewhat restrict the flow of water even when open.

    However, increasing the water flow also means that it moves through the radiator faster and does not get cooled as efficiently.

    The thermostat is in place to allow your engine to reach operating temperature as quickly as possible.

    The only time I have removed a thermostat and operated the engine is when one failed and I had to drive the car to Big A to get another.

    Also, a trick of the trade especially in older cars.  Take a needle and jab a pinhole in the thermostat membrane.  This allows any air that may build up behinf the thermostate to be vented.  When air gets trapped below the 'stat, it does not transmit the engine temperature to the switch like coolant fluid does, causing the engine to overheat before the 'stat is tripped.

  9. Well actually when you take out the thermostat your engine will most likely run hotter. The cooling system in a car engine works on this premise. The thermostat keeps the coolant in the engine untill it reaches the temperature that the thermostat is rated at. When that temperature is reached, the thermostat opens and the hot coolant flows to the radiator, the coolant that has already been cooled by the radiator will flow into the engine untill it reaches the thermostat, the lower temperature of the new coolant will close the thermostat and allow the coolant time  to "soak" up the heat of the engine befor being cycled to the radiator again.

    If you remove the thermostat the coolant will not have enough time in the engine to draw much of the heat out.

    Think about how long water has to sit in a pot on the stove in order to boil. Now imagine trying to get a pot of water boiling if the pot has a hole in the bottom, and you have to keep putting more water in.

    Anyway, I wouldnt recomend it.

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