Good symptom of a bad head gasket.when it heats up my oil is kinda watery but not milkshaky
If slowing the flow of coolant would cool the engine better, a thermostat would close instead of open when the engine gets hot. In the real world, the slower the coolant flows the hotter the engine will get, which is why a thermostat opens and allows more coolant flow as the engine gets hotter. The radiator is most efficient at dissipating heat when it is as hot as you can get it, which means circulating the water as rapidly as possible.driving it with no thermostat
Biggest problem right there my friend, you need to slow the coolant down through the radiator so it has a chance to dissapate the heat.
How does stopping the flow cool anything? If I'm standing in a cold river, does the water need to stop to make my feet cold?I read an article written by an engineer about not running a thermostat in older engines and it stated something about the engines were designed to have the water flow stop every now and then so the water in the back of the block and in other pockets can be cooled. He stated that if you run without a thermostat the water will just flow in the front of the block and you will have hot spots, he backed it up with some real world tests. Made sense to me at the time, wish I could find it. So maybe the location of your temp sensor is in one of those hot spots.
From what I recall he said that the pockets of hot coolant would remain untouched by the flowing coolant but once the flow is stopped and placed under additional pressure the coolant temp in all areas of the motor would balance out. Like I said not my theory, made sense at the time though. If the coolant in the back of the motor never passed through the rad then it would never cool. If the coolant passages on a motor are designed so the coolant flows in one side and out the other like pipes than I can see no thermostat would be needed except to allow the engine to heat up faster. But if the coolant flow is not directed as such and can pool in areas of the motor then it will not cool as efficiently.How does stopping the flow cool anything? If I'm standing in a cold river, does the water need to stop to make my feet cold?
You are correct, and Smokey Yanuck covers this very well in his books...And also i have many yrs experiance in real life on several olders cars where the cooling systems are way over builtI read an article written by an engineer about not running a thermostat in older engines and it stated something about the engines were designed to have the water flow stop every now and then so the water in the back of the block
Actually it does open and close just like that in a first gen motor.First off - in the "real world" the flow of coolant never stops once the thermostat opens. It doesn't open and close in a cyclic manner as the hysteresis in the operation allows it to find some stable partially open position that depends on the operating temperature of the engine.
Correct ...Actually it does open and close just like that in a first gen motor.
Yep cant gespute the maths....but the theroty and that is what it is way off.Let's say that your water pump is operating at 50 gpm and you have 5 gallons of coolant in the system equally divided between radiator and the block. This means that every six seconds all the coolant you have is pumped through the system, three seconds in the block and three seconds in the radiator. It is actually worse than this because of the hoses and tanks that do little to help the cooling cy
(and associated thermostat) [/QUOTE
Neather iy will run at the thermostat temp Starts taking colder water in thermostat wide open, water doesnt reach thermostar tem the thermostat closes up (or partly does)
And visa versa as conditions change like going up a moutain and rarified air or between ruch hr traffic and then hitting open road....
Running with a thermostat housing no ( thermo part) it will run cold, the resitraction has been pre calcuated to always have a gph flow to do tthis...which happens to be an import spec of any cars thermostst..noy just the opening rate.