A fan shroud covers the area around the cooling fan in a car. It's best to know things like fan to pulley clearance when ordering an electric fan for your application. 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. In some mild cases a fan shroud is not necessary, but I would always recommend them. Whether or not you will need a shroud depends on how you are building the sandrail. 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. - Take out the 1 torx screw on the passenger side top and loosen up the fan shroud. Not saying there's none out there but..... You have to count the fan shroud with the clutch fan's weight. This properly locates the new fan in the shroud. 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. It’s made up of a 1/2-inch thick formed-aluminum shroud and one or multiple electric thin-line fans. The shroud focuses the airflow through the radiator and across the engine. 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. Cooling Functions. Without it, air is deflected off the fan blades in all directions. 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. 100% Made in … How do I know this? When you want electrical repairs or installations at your home, you need a professional electrician you can trust to do … - Take your electric fan and slide it against the radiator and screw in the torx screw. 2) Take off the fan. To answer this, it seems like the consensus is in favor of the pull style fans. CFM - Max Airflow . The shroud for a 2.5 is like 15 inches long. The fan shroud makes the fan more efficient. There shouldn't be any need for cutting the shroud for a normal sized body lift. First, which is better; Pusher-style fans or puller fans? 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. No, all Perma-Cool electric fans are designed to be installed directly to the radiator core, close enough to not need a shroud." Shrouding. Some fans can be used as either a pusher or puller. Electric fan might help too, but if the fan shroud works as expected you don't need the electric fan. Then use a 8mm socket wrench and remove the 2 bolts holding the fan shroud. If your rail is going to be open air, a fan shroud probably will not be needed to aid the cooling process. -Brad Brad54, ... but I'd toss the electric fan and go back to the mechanical fan and full shroud. 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. Finish unscrewing the fan, and remove the shroud and fan. I am certain with a shroud, I could idle forever and not overheat. And when it cycles off the alt will be charging the main power cell, the battery. 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. What I do know is that the fan shroud will help your cooling system to perform at it's peak. The only benefit to not having one is that there is no work involved in not installing one. Draws 18.5 AMPS. This is basically a waste of energy. 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. Make sure you use one in your vehicle. Here is where the drivers side shroud bolt is located. I'm 100% on the electric fan … Clutch vs. Electrical - posted in Just plain ol B.S. 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. A fan shroud ensures that air is moving through the radiator core and not around it. This is a pic of where the passenger side shroud bolt is located just beneath the radiator hose. A fan shroud helps … Removing it would not be a good idea. And we proudly make our products in the U.S. Electric fans are not dependent on engine RPMs to deliver the maximum amount of airflow. - Use the fan clutch tool to loosen the bolt and take out the assembly. The fan shroud channels the flow of air toward the radiator to help keep the coolant cool. 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. Mounting holes were drilled in the bracket and the fan shroud. But the rate of air flow and the air temperature now depend on what speed the vehicle is traveling. Now if you're factoring in the weight of the bigger alternator required....maybe. To get maximum airflow through your radiator core, you should use a fan 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 … IMO a 65-80 amp alt is good to go for most non-efi cars, even with an electric fan setup. 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. Finally, if you're installing a custom radiator, adding an electric fan is easy and will clean up your underhood considerably. 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. An example of this can be seen below. 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. If so, a motor mount lift done at the same time would have fixed that for you. : 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. 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 … Electric Fan. radiator w/ 2 electric fans. Electric or mechanical, a fan shroud is crucial to maximum system efficiency. Aluminum Fan Shroud with Flex-A-Lite 2500 CFM 16" electric fan. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. We know that not everyone is able to perform home repairs – and electrical work is not a good DIY project! The shroud also acts like a funnel, pulling air through the entire radiator. 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. That fan also makes a huge dip in the voltage when it comes on even with a relay on it! The cooling system is also vital to your engine's performance. I need to get the fan shroud on, and install an overflow bottle. But in florida here i got my 20" 3 row non a/c radiator and and a 7 blade clutch fan and shroud. A radiator is useless without airflow, a fan shroud helps direct air through the core. Shroud measures 17.5"W X 22"T X 4.25"D. Will fit 30-34 Ford street rod + many other applications. 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. I had this discussion with the guy at Griffin radiator. Shrouds also reduce fan noise. 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. 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. The holes for the stock fan shroud were used to mount the brackets to … Here’s where you’ll notice how heavy the fan is. Note the stock plastic fan shroud encircling the clutch-activated, viscous-drive, seven-blade mechanical fan. Fan Shroud. I checked there website and it states :"Do I need a shroud on my Perma-Cool electric fan? 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