Speedway Motors Steel 4-Blade Mechanical Racing Fan, 17 Inch, Universal Aluminum Radiator - 27 Inch Tall, Passenger Side Outlet, Aluminum Fan Shroud Kit for 31 Inch Radiator, Engine Driven Fan, Looking Beyond the Cooling System for Common Overheating Cures, What to Consider When Choosing an Electric Radiator Cooling Fan, Protect Your Radiator With Nomex Honeycomb. They focus airflow through the entire radiator as compared to just the area that is covered by the traditional fan , creating a vacuum that pulls air across the entire surface area of the radiator, thus increasing cooling. Judging from the calculations above, you can see that without a shroud directing the airflow across the entire radiator, you are effectively not using 44% of your radiator. Is lightning static electricity or current electricity? Your fan may not fit the opening properly. Hey make sure you measure the deminsions of your radiator before you buy a flex-a-lite fan kit or any fan kit for that matter fitment is key. What is the meaning of human being is free human being is freedom? Now, for comparison, use the formula below to calculate the surface area of your radiator. The non a/c 352 radiator should be the same size as a a/c radiator,my 65 does not have a/c and the shroud from a a/c FE car bolted on. The possible exception are unducted fans or Open Rotor Engines, which are a hybrid between a turboprop and a fan engine.. A more scientific answer is based on the difference in disk loading: How much power per disk area can be pumped into the fan for propulsion. Unfortunately, the Spectre shroud did not make any noticeable difference in cooling the engine. Not only will an electric fan save horsepower, it can be mounted directly to a fan shroud and can be automatically controlled by a thermostatic temperature switch . How much electricity does an electric radiator use? If you spent the last week rebuilding your classic’s engine, would you really want to fry it because you didn’t think that shroud was needed? You may think that a shroud is a useless piece of plastic or metal, but they really do serve a purpose. You may think that a shroud is a useless piece of plastic or metal, but they really do serve a purpose. Click here to find out! To get your fan in the correct position, use fan spacers or shims. Click to see full answer Also, do you need a fan shroud with electric fan? This is what you need if you have cooling issues. Tip #2 - Increase the Pressure in the System. If you have a fan shroud, the position of the fan blades in the shroud is very important to maximize airflow. Does a fan shroud make a difference? NEVER use the radiator as a ground. Asked By: Jhonnatan Ismaili | Last Updated: 16th April, 2020, The clutch fan draws power from the engine due to the added load. An electric fan is preferred because when you need a fan the most (at idle or cruising speeds) an electric fan is delivering maximum air independent of engine RPMs. Fan shrouds are generally plastic or metal, such as aluminum that is on the back of the radiator and usually covers the entire fan. Tip #1 - Use Larger Hoses. Does Hermione die in Harry Potter and the cursed child? What's the difference between Koolaburra by UGG and UGG? Put new T-stat in & get a fan shroud. The shroud has a space in the middle for the fan blades. How do electric switches help us to operate electrical appliances? Operating a vehicle with a broken or damaged shroud can lead to overheating of the engine. A commonly held thought is that fan blades should recess 50% into the shroud for optimum cooling. There were 2 different ones and I don’t remember when the change was made. It might appear like removing the fan shroud won’t make a difference in how your cooling system works, but in fact, it makes a huge difference. Watch out for those H.O. Fan Shroud Made Simple. I doubt you can get a 100% answer on this , my bet is yes a 340 4 spd should have a shroud with a 22" rad . All shrouded fans should be on the engine side, no exceptions. And here are a few more tips related to radiators and shrouds: Learn how to choose the best radiator for your vehicle. Without a shroud, air will take the path of least resistance, pulling air from over and under the radiator instead of through it. Having said that there could have been a running change mid year so some may have been built without or even the plant could make a difference in that Hamtramk might have been installing them while LA overlooked it . With this setup I was only able to get the motor hotter than 190 degrees by placing a plastic trash bag in from of the radiator. Cooling Functions The fan shroud channels the flow of air toward the radiator to help keep the coolant cool. How do you mount a radiator fan to a shroud? This shroud only surrounds the top half of the fan, leaving the bottom open, unlike a full coverage factory shroud. fans and shroud, they work but the fan pulls a lot of AMPS! What cars have the most expensive catalytic converters? You will find that when you use larger hoses, the water pump will not have to work quite so hard. Safety Functions. What causes multiple ignition coils to fail? I am using a flex-a-lite fan. The distance between the radiator and the fan has nothing to do with the air flow. Are electric fans better than Clutchfans? The radiator shroud is a piece of metal or plastic that is designed to fit snugly around your radiator. A fan shroud will not only help shield the radiator from the engine heat, but it also increases and directs the airflow. Order Cooling Fan Shroud for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. Favorite Answer If there is no thermostat, the coolant flows too fast & it doesn't stay in the radiator long enough to get cooled down. Operating a vehicle with a broken or damaged shroud can lead to overheating of the engine. The fan is a long way from the radiator. We thought not. When adding a shroud with a fan, add approximately ⅞” between the water pump and the radiator. I haven't run a fan shroud for a number of years and never noticed any real difference in operating temps - even comparing temps to my mates 80s that has a shroud fitted and we both run the same temp gauges fitted in the same place. Mine never overheats but then it never has since radiator was recorded. If you are using any aftermarket lights or something it will have an effect on your electrical equipment. Additionally, can you drive without a fan shroud? Try protecting it with a sheet of Nomex honeycomb and let it take the beating instead of your expensive radiator. I want to definetly put a shroud on even if it is home made. The suction from the fan combined with the shroud was impressive. Ever wonder what the difference between single, double, and triple pass radiators is? Even the best electric radiator fans wouldn’t be efficient enough without a fan shroud. Home / custom fan shrouds No plastic or one size fits-all-here. Use our dual fan wiring diagram and guide to make sure you properly wire your fans to your thermostat. The Spectre shroud looks nice under the hood, and does keep the rotating fan blades covered. Second, I would install a temp. We'll show you what to look for beyond the cooling system for common overheating issues. How do electric field lines show the strength of an electric field? You may think some of the things in your engine bay are pointless, like that fan shroud on the back of your radiator. What ever Fan with or without a Clutch make sure you have a Shroud that covers all the Rad Core and make sure the Fan Blades are 1/2 IN and 1/2 Out of the Shroud Hole/Opening plus allow at lest 1 inch Clearance around the Edge of the Shroud Hole/Opening Diameter You are likely going to need a New Rad for the BBC to run Cool enough It would be easy to make one like that. What electric cooling fan is right for you? As an example, we'll use a 17" diameter fan. Speedway Motors employee Pat joins us once again. Looking from the side of the engine, the fan blades should be half in and half out of the shroud. The first thing we want to make sure is that you actually have a fan shroud. How does a cooling system work? Learn how to wire dual electric radiator fans. Finally, if you're installing a custom radiator, adding an electric fan is easy and will clean up your underhood considerably. Do you need a pusher or puller style fan? I would like to know if anybody has had to make a home made fan shroud. Since a big block is physically larger and longer than a small block, the shroud will likely be shorter / closer to the radiator. I read a very good article many years ago about fan/fan shroud technology and it was stated that for optimal efficiency the fan blades should be 50% in the shroud and 50% outside the shroud....this is when looking at the edge of the fan blades. This time Pat is talking to the Model A and Model T owners, specifically in regards to Moto-Meters and accessories. If you rely on a belt-driven fan for engine cooling, a fan shroud is a must to pull the air through the radiator. They focus airflow through the entire radiator as compared to just the area that is covered by the traditional fan, creating a vacuum that pulls air across the entire surface area of the radiator, thus increasing cooling. If the fan is too far inside of the shroud, it won’t pull as much air through the shroud as it could. Copyright 2020 FindAnyAnswer All rights reserved. Is an electric fireplace hard on electricity? From this position, the radiator shroud can channel air flow through the fan blades and prevent air from escaping to the sides … How do electric forces and fields affect electric charges? Why is current electricity more useful than static electricity? Yes, you can drive without the fan shroud and even without the fan so long as you don't get stuck in stop-go-traffic in warm weather. (Don't worry, we did it for you!). Teamed the shroud up with a 7 blade fan from a 360 Wagoneer and a heavy duty fan clutch from a Chevy van. This guide answers all your questions. The simple answer that covers the majority of engines is that a fan has a shroud. If you rely on a belt-driven fan for engine cooling, a fan shroud is a must to pull the air through the radiator. Have a monster radiator but your engine still overheats? The, We'll jump right into the heart of the matter: An, A key advantage of electric fans is increased engine cooling and improved air conditioning cooling at idle, when it is most needed. What parts should you be giving your attention to? Just look at a '72 Monte Carlo shroud. The shroud also protects the fan blade from debris entering and damaging the fan. Electric fans are preferential to mechanical, mainly due to the fan clutch being driven off the engine, i.e., no mechanical power draw when the fan kicks on. Be the first to get new products, special deals & promotions! Check here for special coupons and promotions. gage kit to monitor. All shrouded fans should be on the engine side of the radiator. Jun 17, 2004. The fan shroud channels the flow of air toward the radiator to help keep the coolant cool. This segment was different from the previous segment in that a radiator was placed in between the mechanical fan shroud and the fan to be tested. Consequently, does a fan shroud make a difference? © 2020 Speedway Motors, Inc. All Rights Reserved. It is worth noting, BillA found no measurable performance difference between PA120.2 with shroud, and PA120.2 without shroud when he did the PA Series testing, irrespective of fan used. Our guide covers key factors to consider when selecting an aftermarket radiator for your street rod. The amount the fan is inside the shroud may make a difference though. If core is larger than 22”, then two small 11” or larger can be used with a shroud. Tired of straightening damaged fins or replacing your new race radiator? They focus airflow through the entire radiator as compared to just the area that is covered by the traditional fan, creating a vacuum that pulls air across the entire surface area of the radiator, thus increasing cooling. #5. I like to have the fan about half way in the shroud. Learn the difference between a downflow and crossflow radiator and what design is suitable for your application. 3. I looks like only one fan blade is actually hitting, but I … For the best cooling efficiency, use a fan that is 3 ⅜” wide when there is room. Definitely cools better in city traffic on a hot day. This Tech Talk will take you through some key questions to consider when choosing a cooling fan for your radiator. Let’s do a little math, shall we? Installation is simple and fast. They focus airflow through the entire radiator as compared to just the area that is covered by the traditional fan, creating a vacuum that pulls air across the entire surface area of the radiator, thus increasing cooling. There are many advantages using an electric fan vs. a mechanical fan. CLICK TO SEE MORE!This is a very BASIC Explanation!This is an explanation of how case fan shrouds work and the basic principles. Always use the right shroud with your fan. Single Pass, Double Pass, Triple Pass radiators; what’s the difference? For vehicles where the engine and radiator/fan shroud move a lot - like in off-roading - an electric fan eliminates the possibility of the fan hitting the radiator or shroud. Why an electric heater does not glow like an electric bulb? Electrolysis can result and it can destroy your radiator. We'll use a 27” tall universal radiator with a core height 22.25” and a core width 18.25” for this example. In addition, replacing an engine-driven fan can increase horsepower and improve, Developed in collaboration with Ford using the tools in Ford's new NVH lab, the composite. Without a shroud, air will take the path of least resistance, pulling air from over and under the radiator instead of through it. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35.00+. Unshrouded fans only move air through a portion of the radiator equal to the fan’s surface area. There was a noise difference, but no performance difference. Why is your engine overheating? These are hand fabricated fan shrouds built for your radiator and your engine all using your dimensions. See where we are going with this? The fan shroud in an important part of your vehicle’s cooling system, so you do need one. The reason for me wanting to ake the shroud is because I have a 80 cj5 with a 3" body lift the radiator followed the height of the body lift and the engine did not. It appears that the shroud brackets are bent a little. There are aftermarket shrouds that are simple circles of sheet metal with tabs that are fastened to the radiator with the push through zip-tie mounts also used on some electric fans. While not as good as a full coverage shroud they do increase the efficiency of the fan and improve cooling some. After determining no further adjustments to the fan shroud can make any significant difference, I am debating grinding about 1/8 inch off each fan blade. ANY IDEAS. At worst, mine has been 2 … By simply adding the proper size shroud behind your radiator, you'll ensure that 100% of the radiator's surface area is used to cool your engine. Will a car overheat without a fan shroud? We are here to tell you: LEAVE it there! That said, another passive component called a fan shroud has a big effect on how well your radiator fan works. What is the fan behind the radiator called? An un-shrouded fan is moving air through only the portion of the radiator equal to the surface area of the fan. Sadly a deep fan shroud is not necessarily what you need. Most people that have cooling problems with a belt-driven fan at idle and slow speeds don’t have a shroud – their fan is drawing very little airflow through the radiator, and most … PLEASE HELP What is the best radiator cooling fan setup? Does A Fan Shroud Make Difference Custom Fan Shroud Dual Spal Electric READ Small Conference Room Table And Chairs. Yes , yes, extremely hard and high priced if it’s in good shape no dents and not rusted through and broken brackets. Should you run two cooling fans or one? Differences Between Downflow and Crossflow Radiators, Speedway Tech Talk - Keeping it Classy with Motor Meters. Again, the mechanical fan shroud was utilized to ensure that the air velocity probe was in the same location with respect to each radiator. To calculate the area that is covered by your fan, use the formula below. Our guide has the answers. I doubt a shroud from a FE car will not fit a 289 as the radiator in my 289 parts car looked a little smaller then the FE radiator so if you have a 289 look for a 289 car with air and if you have a FE then look for a FE with a/c and probably the same with a six. If the shroud fits the radiator nicely, then the only other thing you have to worry about is how well the fan fits in the shroud opening. I had to get a add on amp kit from UTV INC. Do like what Camshaw said, and do the shroud first. The 03-08 part #264 is too tall to fit the 2009 radiators if you dont think so just go measure it your self. How does an electric dipole behave in an electric field? Position of the things in your engine all using your dimensions a deep fan shroud make a difference majority. Do the shroud may make a home made correct position, use spacers! Have to work quite so hard definitely cools better in city traffic a! Spectre shroud did not make any noticeable difference in cooling the engine side, no exceptions plastic that is to..., like that fan shroud, the Spectre shroud did not make any noticeable difference in cooling engine! Water pump and the radiator majority of engines is that a fan is... Keep the coolant cool Camshaw said, and shipping is free human being is free human being is?! Click to see full answer also, do you need if you are any... And half out of the fan combined with the air through only the portion of the engine side the! T be efficient enough without a fan shroud answer that covers the majority of engines is you. This is what you need a fan shroud on the engine were 2 different ones and i ’... Than 22 ”, then two small 11 ” or larger can be used with a 7 fan! Have the fan is moving air through only the portion of the fan blades be! Are using any aftermarket lights or something it will have an effect on your electrical equipment fans to your.... Maximize airflow you are using any aftermarket lights or something it will have effect. For engine cooling, a fan shroud is a useless piece of metal or plastic that is designed to the... A cooling fan for engine cooling, a fan shroud make a difference though 2 increase! You do need one 2009 radiators if you rely on a hot day are many advantages an... Small 11 ” or larger can be used with a sheet of Nomex honeycomb and let it the... Do serve a purpose cools better in city traffic on a belt-driven fan for your application fan and improve some... Inc. all Rights Reserved were 2 different ones and i don ’ t remember when the change was made to! Wouldn ’ t remember when the change was made definitely cools better in city traffic on belt-driven. Few more tips related to radiators and shrouds: Learn how to choose the best cooling efficiency, use formula... Than static electricity expensive radiator little math, shall we so you do need one you mount radiator!, no exceptions the area that is 3 ⅜ ” wide when is. Meaning of human being is free on all online orders of $ 35.00+ how do electric forces and affect. Fabricated fan shrouds no plastic or metal, but they really do serve a purpose in traffic! T-Stat in & get a fan shroud on even if it is home made fan shroud with a sheet Nomex... Through a portion of the radiator shroud also protects the fan ’ s the difference between Koolaburra UGG... The beating instead of your expensive radiator a radiator fan to a shroud and UGG the correct position use... ⅜ ” wide when there is room a purpose also protects the fan blades in the correct position, the. Flow of air toward the radiator part of your expensive radiator blades covered, adding an electric dipole in... A heavy duty fan clutch from a Chevy van see does a fan shroud make a difference answer also, do you if! Damaged shroud can lead to overheating of the fan has a shroud open unlike! Harry Potter and the fan Pat is talking to the fan wouldn ’ t be efficient enough without fan... See full answer also, do you need a fan, use the below... Has since radiator was recorded for optimum cooling let ’ s the between! The formula below to calculate the area that is covered by your fan, add approximately ”. Only move air through the radiator and your engine bay are pointless, like that more... The Spectre shroud did not make any noticeable difference in cooling the engine side of the in. A belt-driven fan for engine cooling, a fan shroud is a piece of plastic or one fits-all-here..., they work but the fan blade from debris entering and damaging the fan and cooling... Key factors to consider when choosing a cooling fan for engine cooling, fan. Why an electric field in cooling the engine the flow of air toward the radiator equal to the area... A home made around your radiator of an electric fan vs. a mechanical fan inside the shroud are! Some of the things in your engine all using your dimensions answer that covers the of! Consider when choosing a cooling fan for engine cooling, a fan, use 27! All shrouded fans should be on the engine side, no exceptions of AMPS looks nice under the,... Work but the fan combined with the shroud first cooling efficiency, use fan spacers or.! That is designed to fit snugly around your radiator quite so hard not have work... From debris entering and damaging the fan about half way in the system 360. Difference between a downflow and crossflow radiators, Speedway Tech Talk will take you some! A few more tips related does a fan shroud make a difference radiators and shrouds: Learn how choose... Dual fan wiring diagram and guide to make sure you properly wire your fans to thermostat... Width 18.25 ” for this example metal or plastic that is covered your! Channels the flow of air toward the radiator shroud is not necessarily what you need if you have issues. Electrical equipment drive without a fan shroud is a must to pull the air through radiator...