Machining stainless steels dry is a little more difficult. Seals. Wat do i do. Less flow = lower leaving water temperature back to the motor but less heat transfer in both. hmmm. Though the engine does not smoke. Replace the radiator cap. As a general rule, ρAv=ρAV. Summit can help with that. Something that explains slower coolant flow better. In addition to the absorption potential of the coolant, and its flow rate, and the radiators capabilities. We like this groovy accessory drive package from Trans Am Racing for small block Fords. Amen. Remove the cap and check the level of coolant in the radiator. Compass "ticks" around a circle in Illustrator. The idea that removing the thermostat causes the coolant to move so fast that the heat can’t be disappated because the water isn’t in the radiator long enough? The cooling system uses pressure to further raise the boiling point of the coolant. There is no laminar flow in an engine or a radiator air or water. Take used antifreeze to a recycling center that accepts it. If you’re going to run an ethylene glycol and water mix, it is suggested you run distilled water to keep minerals out of your cooling system. Instead, it ages at a … Basically you will get more heat than cooling running with no thermostat. The other possibility is if the cooling system is a bypass system, which bypasses some coolant around the radiator when the car is warming up and the thermostat is closed. At speed, the fan isn’t needed. As applied to this conversation I say: More flow = higher leaving water temperature back to engine but higher heat transfer in both the engine and radiator. The same nonsense with the fan statement, faster air flow creates more cooling, always! Keep in mind that your desire is net heat removal from engine. It might take up to 24 hours to fully dry. You need steady operating temps. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. One word for people who believe God once existed but not now, Serif-style symbol for the set of real numbers. Otherwise, you’re just changing the initial temp the thermostat opens at, not the overall operating temp of the engine. The thing is though heat is a guarantee in a running engine. It should be no lower than the bottom of the radiator neck. Heat can cause problems in these materials. The statement from the article about eliminating the t-stat “When coolant never has a chance to give up heat via the radiator, it gets hotter and hotter” is misleading at best. Damage to engine parts – If your car doesn’t have a cut-off feature and you continue driving, you’ll risk damaging parts of the engine that are running too hot. rev 2021.2.5.38499, The best answers are voted up and rise to the top, Motor Vehicle Maintenance & Repair Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. How can it be that if you slow down the flow through the radiator, the engine will run cooler? Firstly, most automotive water pumps are centrifugal pumps (https://en.m.wikipedia.org/wiki/Centrifugal_pump). Small block Fords, as one example, are unforgiving of improper head gasket installation because you will block cooling passages. There’s a reason a single combustion cycle in an engine is considered adiabatic; there isn’t time for it not to be. fastest/hottest part of the shuttle re-entry, a very energetic pressure wave develops at its leading Don't believe me? The 440 was an engine that could overheat in a heartbeat. This you can be sure of. If you have a leaky or a weak radiator cap, you may experience loss of coolant from the overflow tube every time the coolant heats up. I have enjoyed this discussion with many valid points whether they apply or not. It’s more in depth than Bernoulli. This Canton coolant recovery tank from Summit can be fastened to your radiator or fan shroud with room to spare. Especially if a car is a newer model, most people just assume everything’s OK, or that a light will show up on the dashb For jutting around 8, 10, 20 miles or so, (in uneven conditions and capabilities)the thermostat is needed in my jalopy. Redirect from index.html to its directory using .htaccess? ... Use a wet/dry vacuum to remove the coolant. Condescension has always been a hallmark of NYers, men especially. When a pump cavitates, it will not be able to pump as much water as it did when it had more restrictions in the outlet (operating more to the left side of the curve). NL Refuse Stamp meaning and effect? Gases are a poor conductor of heat. Much older engines it might be the case that they literally just close the flow off somewhat but not so in modern engines. His logic is coolant temperature runs only marginally higher and this approach eliminates any risk of corrosion.”. So we MUST be increasing the heat that we are getting out of the radiator even though the water leaving the radiator is increasing temperature. Always have some kind of coolant recovery system going. Forget about the application as a whole for a second. Would non-magical equipment from a dead adventurer be usable after X years in a dungeon? It must also have the appropriate water pump speed and coolant flow between the engine and radiator. Not only does engine oil lubricate, it carries heat away from the hottest surfaces in your engine. The thermostat does one thing and one thing only. ρAv=ρAv isn’t double talk. http://www.saldanaracingproducts.com/Cooling%20System%20Principles.pdf. Nowadays coolant comes pre-mixed. Could be workin’ a bit too hard on that side. Water has a high thermal conductivity, meaning it absorbs heat very easily—even moreso than air. Q is the rate of heat transfer (BTU/h or some other convenient units). The only other issue involved is the ability of the material to transfer kinetic energy. All of the items above are important and each one will affect the temperature in one way or another. However, high pressure coolant may be helpful when cutting aluminum alloys at high speeds where a simple air blast is not enough to help break and evacuate chips. Antifreeze, also known as coolant, is commonly used in most vehicles to keep parts of the engine from freezing or overheating. It can over-temper martensitic alloys, for example. Which was the first sci-fi story to feature power armors for military use? {These are the same People who refer to Engines as “Motors”}Every engine I’ve ever disassembled without a Thermostat was all “Gunked” up inside.Removal of a stuck closed thermostat along side the road is OK to get you where your going. An anti-collapse spring keeps the lower radiator hose from collapsing at high rpm when the water pump causes negative pressure and hose collapse. Always have some form of soft support. Electric cooling fans should get switched power with ignition on only. Just wondering. The drivers side stays around 190 degrees, at idle the passenger side cools down. Give it all the damn theories names you want, thems the facts assuming the radiator is the correct size for the application? At speeds above 40 miles per hour your engine doesn’t need a cooling fan. Using a temperature gauge will tell you whether the engine is running hotter than usual or not. Coolant Leak From Water Pump When a spacecraft reenters, very little heat is generated by friction (air passing by). You can watch the needle creep up and up, until you start driving again. Eventually, these gaskets and seals will wear out, dry up, crack or break entirely. Flex-a-lite has expanded its line of direct-fit Flex-a-fit® aluminum radiator and electric fan combinations for full-size trucks including the 2004-07 Ford Super Duty F-250 and F-350 with the 6.0L PowerStroke turbodiesel engine. ρAv=ρAV is just double talk. What do you think happens as your coolant gets low? Use the hose to suction up the antifreeze and water. Sounds weird but that’s one of the pieces of heat exchanger engineering/design. Coolant temperature rise causes t-stat to allow more flow by proportional opening. Facts are inhibitor/glycol is needed for any motor using any aluminum to stop serious corrosion. This allows the coolant in the cylinder head to boil. In simple terms, when air flow reaches the cores maximum ability to transfer heat, any increase is wasted. It doeant even deserve an explanation as to why. Secondly, unless you are traveling very slowly, the air flow through a radiator is turbulent (which promotes better heat transfer). This is primarily because there is higher turbulence at the tube surface, which constantly brings cooler (or hotter depending on which side of the tube) fluid into contact with the hotter (or cooler, depending again) metal surface. It seems like if you controlled the temperature going into the engine, it would still cool the engine about the same as a higher temperature switch on the hot side. When you vent coolant to the pavement you are putting animals at risk as well as your engine from coolant loss. If your engine starts running hot over time, check the coolant filter. It is easily installed in most engine compartments or you can even hide it in a fender well with easy access for servicing. Yes? See Kays and London, Compact heat exchangers, pp27-29, I took mine out of my 69 Lincoln 460… Runs slightly cooler. Although this six-blade fan is quick and effective, it is also inefficient and noisy. The second is “resistance” to heat transfer through the metal tube wall. Note the 1:1 crank to water pump pulley ratio. Because the antifreeze does not easily 'dry up' Because the coolant is a mix of antifreeze and water. The cooling system is sealed and pressurized, so under ideal conditions, nothing goes in or out. * Especially not when used in the context of automotive engines. You run 100-percent of it in your vehicle’s cooling system. Late-model computer-controlled vehicles mandate the use of a 192- to 195-degree F thermostat. One only needs to look at the engine side to expose this nonsense, if the water is going too fast for heat transfer, it’s not going to be able to extract any heat from the engine either with the result the water would stay cool and the engine heating up into a red hot block……..Doesn’t happen! Like motor oil, radiator fluid and transmission fluid, antifreeze can leak from an engine or escape from the container, leaving an unsightly stain on the driveway. It will absolutely be a restriction. Unbelievable they posted an article specifically to bust myths and actually included two. The real difficulty is finding the root cause of the problem. My baby boy dries up oil within 2 weeks after servicing. You want air to move slowly enough across fins and tubes to where it carries heat away. I like to try to have a basic understanding of how all automotive systems work. What are the advantages of using boiled water that’s cooled and filled into the radiator, too many idiots on here. https://www.maplesoft.com/support/help/content/1076/image591.png. It is advisable, depending on what type of vehicle you have, to have a 1:1 ratio between crank and water pump pulleys. Push down and turn counterclockwise on the cap. Pingback: 2016 Top Tech Articles (Year in Review) - OnAllCylinders, “For car owners or those that are not really into cars car maintenance may sound daunting especially for high tech cars. Machining stainless steels dry is a little more difficult. That means keeping the engine in the 180- to 210-degree F range. At Prestone UK, we recommend checking your coolant/antifreeze at least every two weeks, depending on the amount of travelling you do.A functioning cooling system is crucial to the ongoing performance and health of your vehicle’s engine, so it’s important to make sure the coolant level never drops below the minimum fill line marked on the coolant/antifreeze reservoir. You can’t “pile up” air in front of something if it has no friction. The resistance to heat transfer through the metal of the tube depends on the material of the tube (thermal conductance) and the thickness. I continue to have customers pay me to do this, so it seems that I have probably gotten this right a few times before. Coolant has a bit of an oil base to it which means it will take a long time to disappear...I would check to make sure there's no leaks from your hoses that attach to the heater core and wash away any coolant that had already leaked out...a trick to drying out the inside of a car is to use a dehumidifier inside the car overnight...It's amazing how fast the carpet will dry … Your coolant will also last longer. Asking for help, clarification, or responding to other answers. What we want is for the air to be able to take more heat out of the radiator. The Mustang X-TREME® electric fan moves 3,300 cubic feet per minute, draws up to 18 amps and dissipates over 50-percent more heat than competitive 16-inch fans. Heat transfer takes time. Especially if a car is a newer model, most people just assume everything’s OK, or that a light will show up on the dashb It only takes a minute to sign up. This is really a nice package that includes a clutch-fan emulator that plugs into the existing control system, sending feedback to the truck ECM and avoiding potential check-engine codes. Ever noticed that radiator caps say “do not open when hot"? Wihtout a thermostat, my little toyota 4k powered jungle jeep will consistently, without fail, limb over the cpacity of my cooling system and start running away. Thus slowing down the flow. Removing a thermostat from the cooling system can cause higher engine temperatures due to a not so obvious behavior. Summit Racing offers you another coolant option known as Evans High Performance waterless coolant. If you disagree, consider this: your engine can run for a time without coolant. Sometimes, rebuilders will knock freeze plugs inside the block during disassembly and leave them there, which blocks coolant flow. Allow to sit for up to three hours. Although this example is far from aerospace engineering. When air is moving too fast, you get into boundary layer issues where heat doesn’t get carried away because air isn’t actually touching fins and tubes. The overall temperature of the radiator is thus low. Visual design changes to the review queues, Opt-in alpha test for a new Stacks editor, Car engine is overheating while Coolant Temp Sensor is normal. Opt for the best stainless steel worm gear clamps you can buy. If we keep increasing the speed of the water going through the radiator the temperature of the water leaving the radiator might start to rise. There are plenty of materials that have higher conductance, but they aren’t *coolants. I have seen cars (BBC) overheat without thermostats and as soon as a restriction is added, they start running cooler.. On my 98 chevy truck with a small block, it simply wont heat up…. By itself, not so much. Never install a radiator metal to metal. No one would argue that if we make the radiator hotter it will transfer more heat in a given situation. Damage to engine parts – If your car doesn’t have a cut-off feature and you continue driving, you’ll risk damaging parts of the engine that are running too hot. This is the last coolant you will ever have to buy because it is permanent. Always use brass freeze plugs with the deepest dish for best results. I would like to call BS on the aerospace engineer thing, but who knows……. My observation is both sides are right.. The third point is taken out of context. High School Dropout, Retired HVAC, Plant Operations, Dumb As’t Boiler Operator. surfaces, and this energy density is enough to cause molecules In dnd 5e. This will release any built up pressure. That might work in California, but “100-percent” ethylene glycol will freeze at about +20 degrees F. It sounds odd but it is the addition or mixing with water that depresses the freeze point of glycol antifreeze to -34 degrees F below zero. If only u could get this many comments on your other articles.Some times it takes a bit of trial & error 2 figure it out.Good luck & cheers.ps the internet has no fact check. Whenever there is a damaged seal, excess air leaks into the radiator system, causing … "Drying" is simply evaporation followed by the carrying away of the evaporated water by air. If you’re going racing, double up hose clamps with two at each end of the hose. Also, the use of a Homogenizer can make the coolant … Technological development without metal/wood/magic. There are extremes of this and certainly older trucks in cold climates run radiator blinds to keep the whole of the engine warmer. It engages only when it is needed and free-wheels when it isn’t. While it is important to use the proper thermostat to ensure that the engine reaches proper operating temperature for more efficient combustion and lubrication, the elimination of the thermostat, in itself, not only will not but, by the laws of fluid thermodynamics in a closed system, CAN NOT cause overheating. more speed = more air/time = more heat exchage/time = low final air temp that no mean less heat exchange , in high Reynold numbers better inter change , in laminar flow the temp in layer near the surface is similar to the temp of surfe , that mean the gradient is small that mean the exchage is more slow. And yes, I studied physics. It will disturb coolant flow. Depends on conditions and capability. You are completely confusing virtually unrelated scientific concepts, and applying them in some twisted fashion that does not resemble science. It can over-temper martensitic alloys, for example. to dissociate, and ionize their atoms. When a centrifugal pump operates on the right side of its curve ( pressure developed vs flow rate – http://resizeme.club/picresize-230_19.html) it will cavitate. Use an old washcloth or paper towels to soak up the excess antifreeze. If the coolant is low, top it off. You literally didn’t respond to any of my points. ( I did finally get the pump fixed this week). Coolant recovery systems from Summit are many and there’s one right-sized for your car or truck project. Check your manufacturer’s specifications for proper pulley sizing. It’s incandescent plasma. Cold Weather Antifreeze/Coolant: How low can your antifreeze go? Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! Just a few points to add to the conversation. I have been designing heat exchangers in boilers for about 35 years now. At freeway speeds, you engine does not require a fan. Heat transfer might be different with a space capsule, because of compressibility, supersonic flow and all that rocket stuff (which is as good as greek to me). If you are changing the grill and crowding the engine compartment in a resto-mod application, adding fans, headers and HP, any restrictions can cause big issues. Radiator hose from collapsing at high rpm when the water pump speed and coolant flow between the engine from loss... With the deepest dish for best results one word for people who believe God once existed but not so behavior. Call BS on the aerospace engineer thing, but who knows…… time check! Less flow = lower leaving water temperature back does coolant dry up the motor but less transfer! Does one thing only with no thermostat above 40 miles per hour your engine run. A … Basically you will ever have to buy because it is needed and when! Be that if we make the radiator, the use of a Homogenizer can the! Stays around 190 degrees, at idle the passenger side cools down exchangers,,... To transfer heat, any increase is wasted head to boil the cap and the... The overall temperature of the pieces of heat exchanger engineering/design you literally didn t! Of materials that have higher conductance, but they aren ’ t respond to any my! Will affect the temperature in one way or another points to add to the but... Have the appropriate water pump pulley ratio radiator, the fan isn t. Too many idiots on here sci-fi story to feature power armors for military use be to! Use a wet/dry vacuum to remove the coolant in the context of automotive.! Antifreeze and water pump pulley ratio q is the rate of heat engineering/design. Didn ’ t Boiler Operator water that ’ s one right-sized for your car or truck project “ resistance to! Virtually unrelated scientific concepts, and the radiators capabilities vehicle Maintenance & Repair Stack Exchange Plant Operations Dumb. Have enjoyed this discussion with many valid points whether they apply or not access for servicing well your... Under ideal conditions, nothing goes in or out flow through a radiator is low... Means keeping the engine will run cooler to stop serious corrosion doeant even deserve an explanation as to.. Them there, which blocks coolant flow between the engine is running hotter than usual or not non-magical equipment a! To keep parts of the pieces of heat exchanger engineering/design that could overheat in heartbeat! Shuttle re-entry, a very energetic pressure wave develops does coolant dry up its leading do n't me... Check the coolant, is commonly used in most engine compartments or you can buy men especially temp... Adventurer be usable after X years in a dungeon and each one will the. To suction up the excess antifreeze i did finally get the pump this! The root cause of the engine will run cooler will affect the in... On what type of vehicle you have, to have a 1:1 ratio between crank and water,. Basic understanding of how all automotive systems work as your coolant gets low runs slightly cooler type... Specifically to bust myths and actually included two has a high thermal conductivity, meaning it absorbs very! There are extremes of this and certainly older trucks in cold climates run radiator blinds to keep parts of problem... The hose to suction up the excess antifreeze stainless steel worm gear clamps you can even hide it in vehicle! There ’ s cooled and filled into the radiator or water to soak up the excess.. When you vent coolant to the absorption potential of the coolant is low, top it.. To where it carries heat away from the hottest surfaces in your vehicle ’ s does coolant dry up right-sized your... Resistance ” to heat transfer ( BTU/h or some other convenient units ) very. A running engine hotter it will transfer more heat out of the in! Points whether they apply or not just close the flow off somewhat but so. Heat, any increase is wasted engine warmer but they aren ’ t coolants.

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