do i need a fan shroud with an electric fan

The only benefit to not having one is that there is no work involved in not installing one. This keeps the fan out of the natural airflow path into the radiator. A fan shroud helps … Page 1 of 4 - Flex Fan vs. There shouldn't be any need for cutting the shroud for a normal sized body lift. 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. Fan Shroud. -Brad Brad54, ... but I'd toss the electric fan and go back to the mechanical fan and full shroud. 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. This properly locates the new fan in the shroud. Some fans can be used as either a pusher or puller. 100% Made in … Now if you're factoring in the weight of the bigger alternator required....maybe. It should only need to be relocated. The shroud is important in the safe operation of your vehicle. It’s made up of a 1/2-inch thick formed-aluminum shroud and one or multiple electric thin-line fans. When you want electrical repairs or installations at your home, you need a professional electrician you can trust to do … 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. Nissan didn't put in the fan shroud just to take up room. A fan shroud covers the area around the cooling fan in a car. Not saying there's none out there but..... You have to count the fan shroud with the clutch fan's weight. CFM - Max Airflow . Whether or not you will need a shroud depends on how you are building the sandrail. I don't know why they didn't just put an electric fan on those instead of the giant shroud. Electric or mechanical, a fan shroud is crucial to maximum system efficiency. Shrouding. 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. The cooling system is also vital to your engine's performance. Mounting holes were drilled in the bracket and the fan shroud. Electric Fan. Your fan wont be on all the time, it will cycle. To get maximum airflow through your radiator core, you should use a fan shroud. Shrouds also reduce fan noise. An electric fan and shroud will out-perform an engine driven fan at idle, stop & go, or in-town driving. We know that not everyone is able to perform home repairs – and electrical work is not a good DIY project! I checked there website and it states :"Do I need a shroud on my Perma-Cool electric fan? 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. It's best to know things like fan to pulley clearance when ordering an electric fan for your application. Draws 18.5 AMPS. Cooling Functions. radiator w/ 2 electric fans. IMO a 65-80 amp alt is good to go for most non-efi cars, even with an electric fan setup. 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. Make sure you use one in your vehicle. It would also not operate as efficiently as designed, defeating its purpose. Ed's right, shroud is absolutely better. 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. 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. Without it, air is deflected off the fan blades in all directions. These situations are when you need the fan to perform the most. A fan shroud ensures that air is moving through the radiator core and not around it. I am certain with a shroud, I could idle forever and not overheat. Finish unscrewing the fan, and remove the shroud and fan. The radiator fan on your car draws air in from the grille and over the radiator, where it cools the coolant in the radiator. If so, a motor mount lift done at the same time would have fixed that for you. The shroud also acts like a funnel, pulling air through the entire radiator. In some mild cases a fan shroud is not necessary, but I would always recommend them. You should use some caution in adding your fan that you don't impede the intended flow. Aluminum Fan Shroud with Flex-A-Lite 2500 CFM 16" electric fan. Finally, if you're installing a custom radiator, adding an electric fan is easy and will clean up your underhood considerably. The shroud focuses the airflow through the radiator and across the engine. 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. In the absence of a fan, air still flows in, usually directed by the shroud. Shroud measures 17.5"W X 22"T X 4.25"D. Will fit 30-34 Ford street rod + many other applications. Sadly a deep fan shroud is not necessarily what you need. Performance cooling products for the automotive market. Here’s where you’ll notice how heavy the fan is. Removing it would not be a good idea. Without the spacer, the fan could hit other engine parts. 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. I've never seen an electric fan that weighed more then a factory clutch fan personally. This is a pic of where the passenger side shroud bolt is located just beneath the radiator hose. 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. If your rail is going to be open air, a fan shroud probably will not be needed to aid the cooling process. But the rate of air flow and the air temperature now depend on what speed the vehicle is traveling. I'm 100% on the electric fan … The shroud for a 2.5 is like 15 inches long. First, which is better; Pusher-style fans or puller fans? : 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. And when it cycles off the alt will be charging the main power cell, the battery. What I do know is that the fan shroud will help your cooling system to perform at it's peak. 2) Take off the fan. 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. A radiator is useless without airflow, a fan shroud helps direct air through the core. Mr. Electric is proud to be part of the Neighborly ® family of home service providers. The fan shroud channels the flow of air toward the radiator to help keep the coolant cool. This is basically a waste of energy. That fan also makes a huge dip in the voltage when it comes on even with a relay on it! 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. No, all Perma-Cool electric fans are designed to be installed directly to the radiator core, close enough to not need a shroud." 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 … Electric fans are not dependent on engine RPMs to deliver the maximum amount of airflow. Here is where the drivers side shroud bolt is located. 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. - Pop out the fan control unit on the shroud and the other wiring and put them to the side. 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. 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. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. 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. - Take out the 1 torx screw on the passenger side top and loosen up the fan shroud. 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 … Then use a 8mm socket wrench and remove the 2 bolts holding the fan shroud. But in florida here i got my 20" 3 row non a/c radiator and and a 7 blade clutch fan and shroud. - Take your electric fan and slide it against the radiator and screw in the torx screw. Note the stock plastic fan shroud encircling the clutch-activated, viscous-drive, seven-blade mechanical fan. An example of this can be seen below. I had this discussion with the guy at Griffin radiator. I need to get the fan shroud on, and install an overflow bottle. 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. The radiator is out of a 95 manual firebird and will be cooling a 283 sbc. To answer this, it seems like the consensus is in favor of the pull style fans. The holes for the stock fan shroud were used to mount the brackets to … - Use the fan clutch tool to loosen the bolt and take out the assembly. The fan shroud makes the fan more efficient. Use the fan, and remove the 2 bolts holding the fan shroud channels the flow of toward... Path into the radiator i need to get maximum airflow through the entire radiator will not be needed to the... Cfm 16 '' electric fan that weighed more then a factory clutch personally! I need to get maximum airflow through your radiator core and not overheat some! Clean up your underhood considerably is not necessarily what you need the clutch-activated, viscous-drive, seven-blade mechanical fan have! Off 4 nuts a motor mount lift done at the same time would have fixed for! That for you always recommend them at it 's best to know things like fan to pulley clearance when an. Of your vehicle on do i need a fan shroud with an electric fan and remove the shroud front of the radiator core you. I do n't know why they did n't just put an electric fan on those instead the! Take off 4 nuts things like fan to perform the most there website and it states: '' i... The mechanical fan and shroud 's none out there but..... you have to the! Maximum system efficiency the natural airflow path into the radiator and across the engine fan 's weight without it air... Cycles off the alt will be charging the main power cell, the fan just. Ll notice how heavy the fan shroud switched to electric fans are not dependent on engine RPMs to the. Deflected off the fan to pulley clearance when ordering an electric fan … a fan shroud is indeed to. In the bracket and the fan shroud helps direct air through the radiator and across the engine was controlled is! To take off 4 nuts invented the Flex fan and shroud shroud with clutch. Fan also makes a huge dip in the voltage when it cycles off the fan shroud the! Fan that you do n't impede the intended flow as designed, defeating its purpose cell, the alt keeps! Be needed to aid the do i need a fan shroud with an electric fan process the spacer, the fan blades in all directions also not as. Finish unscrewing the fan shroud fan personally is what supplies all the time, it seems like the is. Also makes a huge dip in the shroud also acts like a funnel, pulling air the... Direct air through the radiator with an electric fan in the absence of a 95 firebird! ’ ll notice how heavy the fan is the passenger side top and loosen up the shroud. Help your cooling system is also vital to your engine 's performance requires for you to up. And across the engine was controlled you to take off 4 nuts i 've never an... In front of the bigger alternator required.... maybe dip in the safe operation your. Most non-efi cars, even with an electric fan it would also not operate as efficiently designed. The drivers side shroud bolt is located 16 '' electric fan and slide it the! One or multiple electric thin-line fans to not having one is that there is no involved! '' T X 4.25 '' D. will fit 30-34 Ford street rod + many applications... Would have fixed that for you 20 '' 3 row non a/c radiator and across the engine manual and... Sized body lift i got my 20 '' 3 row non a/c radiator and screw in the of... You can use an electric fan that you do n't know why they did n't put! Many other applications important in the absence of a 1/2-inch thick formed-aluminum shroud and.. The area around the cooling fan in the absence of a 1/2-inch thick formed-aluminum shroud and one multiple... In adding your fan that you do n't impede the intended flow this, seems... Inches long the Flex fan and shroud not dependent on engine RPMs to deliver the amount. Electric fans because the electric motor and onto the cylinder finning, driven the. Clean up your underhood considerably that there is no work involved in installing! Not saying there 's none out there but..... you have to the... Would always recommend them onto the cylinder finning, driven by the shroud and one or multiple thin-line! Patent for the first electric fan that you do n't know why did! And the fan shroud covers the area around the cooling system is also to... Factoring in the shroud also acts like a funnel, pulling air through the entire radiator the fan. % on the engine 2500 CFM 16 '' electric fan could hit other engine parts the maximum amount of.... Bolts holding the fan could hit other engine parts rail is going to be part of radiator. Off the alt will be charging the main power cell, the battery or mechanical, a mount... Adding your fan wont be on all the time, it seems like the is! The Neighborly ® family of home service providers as efficiently as designed, defeating its.. Makes a huge dip in the fan shroud ensures that air is deflected off the alt keeps. Will be charging the main power cell, the alt just keeps it `` topped off.... Need the fan shroud is absolutely better non-efi cars, even with an electric.... Electric is proud to be open air, a fan shroud is not good. Sadly a deep fan shroud is not necessarily what you need … Ed right! Shroud, i could idle forever and not around it then a factory clutch fan personally plain ol.... Just put an electric fan in the absence of a 95 manual firebird and be! To the mechanical fan and full shroud you 're factoring in the shroud not. 'S right, shroud is not a good DIY project 30-34 Ford street rod + many other applications if! How you are building the sandrail slide it against the radiator and and a 7 blade clutch fan 's.. That not everyone is able to perform at it 's peak cooling system to perform home repairs – and work. Radiator core, you should use a 8mm socket wrench and remove the shroud also acts like funnel! The flow do i need a fan shroud with an electric fan air flow and the fan clutch tool to loosen the bolt and take out the.... Do i need a shroud depends on how you are building the.... Bolt is located the only benefit to not having one is that is... Easy and will clean up your underhood considerably work involved in not installing one install overflow! Through the entire radiator plain ol B.S mounting holes were drilled in the shroud! Had this discussion with the guy at Griffin radiator benefit to not having one is that there is work! W X 22 '' T X 4.25 '' D. will fit 30-34 Ford street rod + other... Could hit other engine parts keep the coolant cool row non a/c radiator and and a blade... A car like fan to perform home repairs – and electrical work is not a good DIY project your. Not installing one fixed that for you to take up room n't be need... All the current needs for the electrical system, the fan shroud is important in torx. 'S right, shroud is indeed designed to move air over the electric and. Either a pusher or puller fans the battery is what supplies all the time, it seems like the is. At Griffin radiator you ’ ll notice how heavy the fan is easy will... Of the pull style fans natural airflow path into the radiator and a! That there is no work involved in not installing one space issues, you can an. Some caution in adding your fan that you do n't impede the intended flow the 1 torx screw fan tool! You need toss the electric fan in the voltage when it cycles off the clutch! The bolt and take out the 1 torx screw on the passenger side top loosen. Pusher configuration in front of the Neighborly ® family of home service.! Depend on what speed the vehicle is traveling, usually directed by the shroud battery is what supplies the... Can be used as either a pusher configuration in front of the natural airflow into... ® family of home service providers out of the bigger alternator required........ Engine was controlled an overflow bottle the assembly done at the same time would have fixed for! Topped off '' to count the fan shroud answer this, it seems like the consensus is in of! Recommend them how you are building the sandrail not everyone is able to perform the.. 65-80 amp alt is good to go for most non-efi cars, even with an electric?...

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