They are calling this a 1X10" fan, 1550 cfm. Only needs to work in traffic and while idling, the rest of the time air is being forced through the radiator. $14 http://cgi.ebay.com/ebaymotors/10-U...r_Truck_Parts_Accessories&hash=item45edb1727e 16" CHROME fan at 2400 cfm, for only $53. http://cgi.ebay.com/ebaymotors/16-C...r_Truck_Parts_Accessories&hash=item20b0b54c46 The fans are out there, and not too hard to find. You need to figure out how much clearance you have between radiator and water pump, and how wide the shroud can be, then start looking for what will fit.
Good thread. Gives me a kick in the butt to get the electric installed. Guess thats the project at work tomorrow night. Were open till 9 but its always dead. We just catch up on our own projects.
Elec fan - cooling issues I did my elec fan conversion abt 10 days ago. Along w/ the fan I did the Champ rad upgrade. I have a 16in. fan w/ 195/175 off Jegs controller and new 180 stat. I installed all this stuff drove the car and it worked fine as long as I was moving. When I let the car idle for 15 -20 min the temp went to 230 that's when I 'd seen enough -shut it down. This was on a day the temp was only in the low-mid 60's. I wud like to stay w/ the elec setup If I can work out this issue. I have had some suggestions here on what I may need to do to resolve this. One suggestion, I don't have air going through the fan when idling. I do have a lot of space the air is not being drawn by the fan. Well, I will see abt fabrictating or trying to find something in the boneyard. I will be out of town for a week so things on hold. I have the PS pump off now for rebuild and some other repairs/upgrades so have'nt had the engine running. I have seen so many here use this setup successfully - that Im inspired to work with it. Here are some pics of what I have done so far - All Suggestion Welcome. Before this change I was using a 160 stat, stock rad, fan and shroud I never got over 215 in hot wx idling.
Hmmm. My setup is similar, except I have a shroud that covers nearly all my fins on the radiator. Even when outside temps are mid-80s, it takes my car about 5 minutes to get up to 180, and never goes over 185-190, in traffic, idling, and stays right around 180-185 when driving no matter what the outside temps are. So, is it just the extra shroud keeping mine cooler?
I'd say yeah, most likely it is. I used to have a 16" fan nearly identical the chrome one you showed in your link, but black. Probably the same one Mojo is using. Although I was dubious of its advertised CFM, it did move plenty of air. But it barely kept my engine within acceptable temps. After switching to an Escort fan assembly with a shroud, the trouble ended. 195 with the AC on, idling in traffic on an 85 degree day, no problem. It might even go lower if I adjusted my fan controller, but my engine seems to like that temperature. Anyway, the Escort fan is actually smaller in diameter than the fan I replaced. The shroud makes a difference. (Might also have something to do with the bigger blades and stronger motor too though, I'll admit.)
The shroud will help. Not to insult you but I've seen it many times. Is the polarity on the fan correct. Just a thought.
If you shroud it, the lower temps will come... Seriously, put a fan shroud on the radiator. The swept area of the fan blades isn't large enough to do the job without one. From the pics it looks like a good 1/3 of the radiator isn't getting any air movement unless the car is moving. Just my observation, -Scott H.
As you heard from all the other posts,they are dangerous for racing. I still have mine,74 Maverick 250 auto. The flex fan works well for keeping the engine cool with the air on idling in traffic. It also is quiet. I am easy on my car and would imagine the engine never goes over 3,500rpm. I have thought about an electric one,but for proper flow and performance,it costs more than I`m willing to pay right now,and I`m not sure if my stock alternator will take the extra load. Things being as they are,I may get a new flex fan,much cheaper than electric,to replace mine. I do realize that metal fatigue happens to these over time. My car only has 85,000 miles on it so I hope the fan will go a little while longer.
Elec fan - cooling issues Thanks for the suggestions on my fan problem. I think u guys are right on the shroud. I've had almost unanimous agreement on the fact I need a shroud. Im going to Atlanta nx week, when I return that will be my first order of business. Thanks guys.
Some of the electric fans draw a LOT of start up current so be aware of that. Some of the electric fans are pushers and some are pullers so be aware of that. If the fan is running and not pulling air through the radiator is is probably not set up for how you have it mounted. If you have trouble overheating while at idle then you probably either need more fan or more shroud. You have to have some kind of shroud to make the air go where it is supposed to. No car or truck even needs a fan at highways speeds. In fact the fan probably hinders the air flow. Idle is where the fan is needed or very slow speeds. I might be wrong at all above so take with a grain of salt. clint
The electric fans only draw a lot on startup. I ran mine on a 63A GM 1-wire for years, with no problems. Not sure what the stock Mav/Com alt is. It will dip into the amps for a second or two, then after it lights up, it only draws something like 8-12A to keep running.
The needle jumps on my ammeter when the fan cuts on, but not all that much. After that initial jump the draw is negligible. My stock alternator handles it fine every day. Along with the MSD, AC, H4 headlights, more and brighter tail bulbs, and just a little bit more stereo than it probably needs. I really didn't think it would keep up, but it does.
the first gen alternators also known as the 1G were rated at between 35- 65 amps. i think our cars got the 65 version
