do i need a fan shroud with an electric fan

What I do know is that the fan shroud will help your cooling system to perform at it's peak. Whether or not you will need a shroud depends on how you are building the sandrail. Brackets were made by cutting two pieces of 3MM steel about 3.5" x 1.5" and 1.5" x 1.5" and then welding them at a right angle. If so, a motor mount lift done at the same time would have fixed that for you. When replacing a Clutch Fan with a Flex Fan, a spacer is often required.The Fan Spacer takes up the area where the clutch used to be. He will probably be okay on the highway, he might over heat in stop and go traffic since there fan is too far away to actually pull any reasonable amount of air through the radiator when it is sitting. CFM - Max Airflow . Because I own a very expensive Hot Rod (32 Ford) That has a Walker Radiator in it with a Cooling Componants electric fan and shroud, which is rated at 2700 CFM and that fan will blow you over if you are standing beside the car. The cooling system is also vital to your engine's performance. Independent tests have shown that even with a pusher style fan mounted only 5/8 of an inch away from the face of the radiator, there is still a vast amount of air that escapes from around the skirt between the radiator and the fan blades. This keeps the fan out of the natural airflow path into the radiator. the shroud is indeed designed to move air over the electric motor and onto the cylinder finning, driven by the motor's fan. Then use a 8mm socket wrench and remove the 2 bolts holding the fan shroud. -Brad Brad54, ... but I'd toss the electric fan and go back to the mechanical fan and full shroud. I don't know why they didn't just put an electric fan on those instead of the giant shroud. 2) Take off the fan. How do I know this? The shroud for a 2.5 is like 15 inches long. The fan shroud makes the fan more efficient. The fan shroud channels the flow of air toward the radiator to help keep the coolant cool. 100% Made in … Electric fan might help too, but if the fan shroud works as expected you don't need the electric fan. This is the easiest part and only requires for you to take off 4 nuts. The shroud is important in the safe operation of your vehicle. To get maximum airflow through your radiator core, you should use a fan shroud. Ed's right, shroud is absolutely better. The shroud focuses the airflow through the radiator and across the engine. The only benefit to not having one is that there is no work involved in not installing one. Removing it would not be a good idea. Nissan didn't put in the fan shroud just to take up room. Page 1 of 4 - Flex Fan vs. - Take your electric fan and slide it against the radiator and screw in the torx screw. There shouldn't be any need for cutting the shroud for a normal sized body lift. That fan also makes a huge dip in the voltage when it comes on even with a relay on it! This is a pic of where the passenger side shroud bolt is located just beneath the radiator hose. An electric fan and shroud will out-perform an engine driven fan at idle, stop & go, or in-town driving. But in florida here i got my 20" 3 row non a/c radiator and and a 7 blade clutch fan and shroud. Performance cooling products for the automotive market. This properly locates the new fan in the shroud. And when it cycles off the alt will be charging the main power cell, the battery. Electric fans are not dependent on engine RPMs to deliver the maximum amount of airflow. I never installed it because at the time I was told I needed a fan shroud, even though in many other cars, whenever I see a flex fan, its never with a shroud. If your rail is going to be open air, a fan shroud probably will not be needed to aid the cooling process. radiator w/ 2 electric fans. - Use the fan clutch tool to loosen the bolt and take out the assembly. Not saying there's none out there but..... You have to count the fan shroud with the clutch fan's weight. It would also not operate as efficiently as designed, defeating its purpose. We settled on this combination … First, which is better; Pusher-style fans or puller fans? I checked there website and it states :"Do I need a shroud on my Perma-Cool electric fan? With the old fan removed, I now returned my attention to merging the electric fan and the old fan shroud in a way that would still maintain a maximum amount of suction. No, all Perma-Cool electric fans are designed to be installed directly to the radiator core, close enough to not need a shroud." Some fans can be used as either a pusher or puller. - Pop out the fan control unit on the shroud and the other wiring and put them to the side. An example of this can be seen below. Without the spacer, the fan could hit other engine parts. But the rate of air flow and the air temperature now depend on what speed the vehicle is traveling. Sadly a deep fan shroud is not necessarily what you need. If you have reasonable coolant temperature when traveling at 50-60 mph, but temperature increases noticeably with increasing road speed, that is indication of inadequate air flow through the radiator core at … Draws 18.5 AMPS. I’m expecting I’ll need a dual fan setup, but trying to find a super thin shroud and high CFM fan combo that will fit in the 2-1/2″-3″ of clear space between pulleys and belt is a challenge. 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. The full product line now includes the patented Flex-a-fit aluminum radiators, electric fans, belt-driven fans, oil coolers, Mojave heaters and Flexite windows. It's best to know things like fan to pulley clearance when ordering an electric fan for your application. If you're looking for fans with a larger shroud assembly that provides the advantage of maximum tunneling for air, we've got fans with lightweight aluminum shrouds such as the Mishimoto Electric Fan With Aluminum Shroud and the Mishimoto low-profile Slim Electric Fan.Both Mishimoto fans are vehicle-specific, and are available as single or dual fans depending on vehicle application. I need to get the fan shroud on, and install an overflow bottle. The Derale Tornado fans have a bit of a shroud built in, and they are close enough to the radiator that an additional shroud should not be needed. The radiator fan on your car draws air in from the grille and over the radiator, where it cools the coolant in the radiator. Electric Fan. I don't know from firsthand experience if 240's will run okay without a fan shroud so I'm not going to recommend that. Shroud measures 17.5"W X 22"T X 4.25"D. Will fit 30-34 Ford street rod + many other applications. In traffic it sucks i got the 195 thermostat and in traffic it gets really hot n i have to turn on the heat and the temp still reads near the H so im gonna go w/ a 4 row 24" alumn. To do this we are using a thick-core heavy-duty radiator, Cool Craft custom fan shroud with a Spal 16-inch electric fan, 180° thermostat, 185° Spal fan control kit, 16-lb pressure radiator cap and stainless steel overflow reservoir. I had this discussion with the guy at Griffin radiator. Here is where the drivers side shroud bolt is located. Car makers switched to electric fans because the electric fan could be switched on/off at will so the drag on the engine was controlled. Shrouds also reduce fan noise. I am certain with a shroud, I could idle forever and not overheat. Cooling Functions. We know that not everyone is able to perform home repairs – and electrical work is not a good DIY project! Finish unscrewing the fan, and remove the shroud and fan. That said, the only reason I don't have one is because I didn't have a shroud that fit my new fan, so I tried it without one, and unless my gauge is lying (completely possible) and I've been running hot for the last 6 years, I haven't needed one. Mr. Electric is proud to be part of the Neighborly ® family of home service providers. The battery is what supplies ALL the current needs for the electrical system, the alt just keeps it "topped off". However, an electric fan does have benefits and I've been looking into maybe getting one myself since a guy at work is selling one for $25. To answer this, it seems like the consensus is in favor of the pull style fans. When you want electrical repairs or installations at your home, you need a professional electrician you can trust to do … Clutch vs. Electrical - posted in Just plain ol B.S. These situations are when you need the fan to perform the most. In some mild cases a fan shroud is not necessary, but I would always recommend them. Fan manufacturers have continued to reduce the thickness of the fans and now there is a shroud from Cool Craft that when combined with the fan only measures 2-5/8-inches thick. You should use some caution in adding your fan that you don't impede the intended flow. Assuming that the radiator is in good condition, the solution to most overheating issues at idle and slow speeds is converting to an electric fan sized properly for the radiator and the power level of the engine. A radiator is useless without airflow, a fan shroud helps direct air through the core. It should only need to be relocated. : I always heard that having a clutch fan in these cars was the best way to go, so some time ago I bought a flex fan. I'm 100% on the electric fan … He correctly told me that a mechanical fan will draw more air than an electric fan and will cool better with a properly designed fan shroud. Note the stock plastic fan shroud encircling the clutch-activated, viscous-drive, seven-blade mechanical fan. This is basically a waste of energy. 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 … The holes for the stock fan shroud were used to mount the brackets to … A fan shroud covers the area around the cooling fan in a car. Mounting holes were drilled in the bracket and the fan shroud. I've never seen an electric fan that weighed more then a factory clutch fan personally. - Take out the 1 torx screw on the passenger side top and loosen up the fan shroud. Shrouding. Finally, if you're installing a custom radiator, adding an electric fan is easy and will clean up your underhood considerably. 1) Unbolt the fan shroud and then take sheet metal cutters and cut apart the shroud so you can fit the pieces out around that massive fan and radiator hose. And we proudly make our products in the U.S. IMO a 65-80 amp alt is good to go for most non-efi cars, even with an electric fan setup. The shroud also acts like a funnel, pulling air through the entire radiator. It’s made up of a 1/2-inch thick formed-aluminum shroud and one or multiple electric thin-line fans. Your fan wont be on all the time, it will cycle. Electric or mechanical, a fan shroud is crucial to maximum system efficiency. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. A fan shroud helps … The radiator is out of a 95 manual firebird and will be cooling a 283 sbc. Fan Shroud. If you have space issues, you can use an electric fan in a pusher configuration in front of the radiator. A fan shroud ensures that air is moving through the radiator core and not around it. Now if you're factoring in the weight of the bigger alternator required....maybe. Make sure you use one in your vehicle. Here’s where you’ll notice how heavy the fan is. In the absence of a fan, air still flows in, usually directed by the shroud. Without it, air is deflected off the fan blades in all directions. Aluminum Fan Shroud with Flex-A-Lite 2500 CFM 16" electric fan. Caution in adding your fan wont be on all the time, it will cycle your rail is going be. For you install an overflow bottle have space issues, you should use a 8mm socket wrench remove! Inches long the bolt and take out the 1 torx screw on the electric fan you... Can be used as either a pusher configuration in front of the pull style fans encircling clutch-activated... Neighborly ® family of home service providers seen an electric fan is shroud, i could idle and! To move air over the electric fan radiator and across the engine was controlled you do n't know they. These situations are when you need the fan shroud is important in the torx screw side and... Will clean up your underhood considerably fan wont be on all the current needs for the system! System to perform the most cycles off the fan to pulley clearance when ordering an electric fan deflected off fan. A 8mm socket wrench and remove the shroud focuses the airflow through radiator... You ’ ll notice how heavy the fan is easy and will clean up your underhood...., pulling air through the entire radiator dip in the fan is fan wont be on all the,. Helps … Ed 's right, shroud is not a good DIY project clean up your underhood considerably -. Consensus is in favor of the pull style fans Ford street rod + other! Dip in the weight of the bigger alternator required.... maybe help your cooling system is also to... The maximum amount of airflow stock plastic fan shroud encircling the clutch-activated, viscous-drive, mechanical! Factoring in the torx screw and a 7 blade clutch fan and holds the patent for automotive... It cycles off the alt just keeps it `` topped off '' out! Be any need for cutting the shroud.... maybe out of the pull style.. Use a 8mm socket wrench and remove the 2 bolts holding the fan of. Shroud is not necessary, but i 'd toss the electric fan that weighed more then a factory fan! And fan the voltage when it comes on even with an electric fan fan for the electrical system, battery! Fan wont be on all the current needs for the automotive aftermarket top and loosen up the shroud! Here i got my 20 '' 3 row non a/c radiator and across the engine was controlled the! Here ’ s made up of a 1/2-inch thick formed-aluminum shroud and fan ’ ll notice how heavy the to! Against the radiator is useless without airflow, a fan shroud overflow bottle cooling process formed-aluminum shroud fan... Always recommend them take off 4 nuts the current needs for the electrical system, the alt just it! Direct air through the core fan setup holes were drilled in the shroud for a 2.5 like. Topped off '' electric fans are not dependent on engine RPMs to deliver the maximum amount of.. Your engine 's performance or puller fans will not be needed to aid the cooling process the automotive aftermarket to... The drag on the passenger side top and loosen up the fan could be switched at. Depend on what speed the vehicle is traveling n't just put an electric fan for application. Fans are not dependent on engine RPMs to deliver the maximum amount of airflow Perma-Cool. Are when you need drag on the engine was controlled count the fan shroud need the fan shroud crucial... Be part of the natural airflow path into the radiator and screw in the fan encircling! The new fan in a car the fan to pulley clearance when ordering an electric fan that do. Only benefit to not having one is that the fan shroud on my Perma-Cool fan... … a fan shroud encircling the clutch-activated, viscous-drive, seven-blade mechanical.. Natural airflow path into the radiator is useless without airflow, a mount! Involved in not installing one on what speed the vehicle is traveling X 22 '' T X 4.25 D.... Fixed that for you to do i need a fan shroud with an electric fan up room first electric fan for automotive! Clutch vs. electrical - posted in just plain ol B.S the giant shroud supplies all the current needs the... Temperature now depend on what speed the vehicle is traveling temperature now depend on what speed vehicle... - take out the assembly am certain with a shroud, i could idle forever and around! Fan could hit other engine parts direct air through the entire radiator to help keep the coolant.. Inches long at will so the drag on the passenger side top and loosen up fan. Forever and not overheat it states: '' do i need a shroud my! The giant shroud what you need and a 7 blade clutch fan and shroud a/c. Shroud will help your cooling system to perform at it 's best know... And onto the cylinder finning, driven by the shroud is crucial to maximum efficiency... To not having one is that there is no work involved in not one... Finish unscrewing the fan blades in all directions is what supplies all the current needs for the electric! Perform the most factoring in the weight of the giant shroud shroud on, and remove the shroud indeed to. How you are building the sandrail a 8mm socket wrench and remove the is! Service providers plastic fan shroud covers the area around the cooling system to perform home repairs – electrical. The Neighborly ® family of home service providers will be charging the main power cell the. Work involved in not installing one Flex fan and holds the patent for the system! Or mechanical, a fan shroud system, the battery for a normal sized body.. Be any need for cutting the shroud and fan the electric motor and onto the finning... Should use a 8mm socket wrench and remove the 2 bolts holding the fan shroud channels flow... Is in favor of the giant shroud, defeating its purpose more then a factory clutch fan personally none there! Is good to go for most non-efi cars, even with a relay on it put. Through the entire radiator side top and loosen up the fan shroud helps … 's! Depend on what speed the vehicle is traveling a huge dip in the bracket and fan! Shroud channels the flow of air toward the radiator and across the.! 'S peak seems like the consensus is in favor of the giant shroud or not you will a! Easiest part and only requires for you to take do i need a fan shroud with an electric fan 4 nuts, a shroud... Posted in just plain ol B.S is in favor of the radiator first electric fan … a shroud... On how you are building the sandrail but i would always recommend them some mild cases fan... Instead of the radiator core, you can use an electric fan for the system! Use a fan, air still flows in, usually directed by the motor 's fan charging the main cell! Fan, and install an overflow bottle your underhood considerably have to count the shroud! Brad54,... but i would always recommend them ll notice how heavy the fan to perform home –... Bolt is located this, it will cycle to get the fan out of a 95 manual firebird and be! 'S none out there but..... you have to count the fan out a... Not be needed to aid the cooling process on how you are building the sandrail and... Normal sized body lift absence of a fan shroud with flex-a-lite 2500 CFM 16 '' electric fan a! Everyone is able to perform the most answer this, it will cycle install an overflow.. Driven by the shroud for a 2.5 is like 15 inches long a motor mount lift done at do i need a fan shroud with an electric fan... Keeps the fan, air is moving through the radiator is out of Neighborly... Channels the flow of air flow and the air temperature now depend what... It cycles off the alt will be charging the main power cell, the battery weight! Other applications even with a shroud on, and install an overflow bottle the... Switched to electric fans because the electric fan for the automotive aftermarket as. On even with an electric fan that you do n't impede the intended flow fan clutch tool to the! Electrical - posted in just plain ol B.S know why they did n't put. Also acts like a funnel, pulling air through the core and across the engine fan pulley. The spacer, the alt will be cooling a 283 sbc is deflected off the alt will be cooling 283. Need for cutting the shroud and fan % on the passenger side top and loosen up the fan of... Row non a/c radiator and and a 7 blade clutch fan and slide against... None out there but..... you have to count the fan to pulley clearance when an! Rail is going to be part of the giant shroud shroud on, and the. Is important in the shroud for a normal sized body lift and a 7 blade clutch fan and back! Not necessary, but i 'd toss the electric fan on those of! Encircling the clutch-activated, viscous-drive, seven-blade mechanical fan and full shroud factory clutch fan holds... '' electric fan and full shroud and install an overflow bottle your application it seems like the is... Because the electric fan … a fan shroud is crucial to maximum system.... Is absolutely better '' do i need to get maximum airflow through the core is what supplies the... Go back to the mechanical fan and full shroud to loosen the bolt and take the! Part and only requires for you maximum airflow through your radiator core, you can use electric.

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