Guys I have a 70 mach one with what looks like a factory rad and i see some guys putting electric fans on their cars.My is a 4 speed if that matters and the rad looks good so i would like to save it if i could an make an electric fan(s) setup work.Where should i start ?The care is being taken apart now but would like to get some parts lined up for later.
THanks
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1970 Mach 351C 4 speed Top loader .Older restoration which i am taking apart and making it right with improvements.
I've got a 70 coupe with a 351 c. Just put a new copper/brass big block radiator in it and I'm using a Contour twin fan setup.
With both fans on high speed, it will pull small furry critters through the core.
Fan/shroud is a perfect fit, covers the core side to side and top to bottom.
In the aftermarket world 99% of the e-fans are junk in terms of design & quality IMHO. The OEM units flow anywhere from 50% to 200% more CFM than the "Hi Perf" aftermarket units, last for years in real world daily, all weather use and are quiet- and are less expensive in most cases!
I bought (last summer) a replacement assembly for my wife's 1997 Cougar Sport (V8) (the bearings in the e-motor were starting to whine).....the entire assembly including the shroud was $120 with tax (I bought the entire assembly because the motor itself was $80).
You will also hear/read about people having issues/concerns with their engines running warm/hot, once it is really verified and there are no mechanical issues, 99% it can be traced right to these HP Aftermarket fans.....those using oem units- I have never in 20 years heard of an issue related to them in any way in regards to cooling.
There are many on the market to choose from…..the V6 Ford Taurus fan (90-95 3.8L), If space is tight, the 95-00 V6 Ford Contour, 99-02 V6 Mercury Mystique, 99-02 V6 are flatter in design IIRR but if you don’t mind making your own shroud….. Custom Electric Fan install - Taurus + Aluminum Shroud
Electric is the only way to go for me. From what I have read it also frees up from 20 -25 Hp at 6000 rpm. I bought the Derale twin fan c/w dual fan controller. Fit my Griffin rad quite well. Each fan pulls 2000 cfm and I belive it ! I could feel the "wind" at the rear of the mach with the hood off. I did have a little clearance issue with the water pump, I just routered some plastic off on the fan motor support.
Keep in mind the Taurus fan that I used would ONLY fit with the motor relocated further to the rear. Thanks for the compliments on the fabrication. All I used was a jigsaw to make it. The shroud was prefabricated from Northern Radiator.
If you are looking for an easy solution, look into the Ford Contour/Sable dual fan setups. They fit the 24" wide radiators nicely. Keep in mind these draw about 20-30a, so make sure your alternator isn't the tiny stock 38/42A one. Headlights and fan on high would overload the alternator. You can pick up original style 1g alternators of roughly 70a for pretty cheap, unless you want to cut the harness up and go with a 3g late model 130a alternator, which won't likely be needed unless you have a larger stereo system.
The even easier solution would be to get a 7 or 8 blade mechanical clutch fan with the factory shroud. Bolt and go. With the electric fan, you have to make brackets to mount to the radiator, then get a fan controller/relay to kick it on an off at certain temps. If you aren't doing a lot of stop and go driving, you likely won't need the extra headache of the electric fan. You aren't exactly located in a high heat desert either, so your outside temperatures are likely reasonable year-round. I'm not up to speed on what fan diameter the existing was, but clutch fans are pretty easy and cheap to find. Look on ebay.
It does not get real hot for long up here .The engine does have some performace goodies in side if that needs to be taken into consideration but exatly what jhas been done i do not know.I am not concerned about loosing HP.What is on it know well actually in the floor of my harage is an electric fan off of an unknow vehicle and it was just an on off toggle switch.I would prefere to use the KISS and install a new shroud and a recommended fan if that would work well for me .A hot day up here is mid 80's with averages around 80's in the summer.
I do not have the old shroud or fan .Perhaps someone with a shroud and hydrolic clutch may chine in and help me out
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1970 Mach 351C 4 speed Top loader .Older restoration which i am taking apart and making it right with improvements.
It does not get real hot for long up here .The engine does have some performace goodies in side if that needs to be taken into consideration but exatly what jhas been done i do not know.I am not concerned about loosing HP.What is on it know well actually in the floor of my harage is an electric fan off of an unknow vehicle and it was just an on off toggle switch.I would prefere to use the KISS and install a new shroud and a recommended fan if that would work well for me .A hot day up here is mid 80's with averages around 80's in the summer.
I do not have the old shroud or fan .Perhaps someone with a shroud and hydrolic clutch may chine in and help me out
With the on/off switch, you can actually cool your motor too much especially in climates that don't get very warm which increases wear on the motor. In my opinion, I would follow the KISS and get the shroud and clutch fan. Unless you had a turbo/supercharger or had a high cubic inch stroker motor (or just wanted the clean looks of the efan or safety of not having the mechanical fan blade/finger eaters), I wouldn't go through the hassle of the electric fan.
What radiator are you using? What is the core width? The 20" radiator bolts to the radiator support panel of the body, whereas the 24" radiator uses an upper saddle and lower brackets to mount the radiator. If you have a 24" radiator, I'd look into getting a Big Block radiator shroud and find a clutch fan that will work. $70 for a shroud and $30-40 for a fan and you will be good. To go electric you'd need the efan, say $60, a fan controller at say $30, and then upgrade the alternator most likely at $50. Then you have to run the wiring to the controller and fan, as well as make brackets to attach the fan to the radiator. You'd have to research the prices a bit more, these are shoot from the hip prices.
I have a Maradyne dual fan with integrated shroud that fits my 24" rad perfectly. You can hear it more with the straight blades, but not a problem. I also have the adjustable thermostat, works great if you install it correctly. I bought if from performanceparts.com at a very good price.
Maradyne MM22KS Mach Two 11" 225W Dual Puller Fan with Side Flanges www.maradyne.com
Last edited by Alan _MacDougall; 02-13-2013 at 05:04 PM.
My Rad core is 24"wide 16"High and 2" thick.I have the rad out but the engine is still in the car so I eye balled it and it looks like I would have around 4" from the rad core to the waterpump bolts.The rad bolts to the back of the rad support and has the saddle at the top and two brackets at the bottom.I would just as soon go to a manual setup if it would be enough to keep engine happy.
The old setup was on there when i bought the car but it's not much good IMHO.
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1970 Mach 351C 4 speed Top loader .Older restoration which i am taking apart and making it right with improvements.
What does the clutch fan do for cooling that a non clutch can that simply bolts to the pulley.And what about a flex fan I read about in Mustang Monthly
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1970 Mach 351C 4 speed Top loader .Older restoration which i am taking apart and making it right with improvements.
It does not get real hot for long up here .The engine does have some performace goodies in side if that needs to be taken into consideration but exatly what jhas been done i do not know.I am not concerned about loosing HP.What is on it know well actually in the floor of my harage is an electric fan off of an unknow vehicle and it was just an on off toggle switch.I would prefere to use the KISS and install a new shroud and a recommended fan if that would work well for me .A hot day up here is mid 80's with averages around 80's in the summer.
I do not have the old shroud or fan .Perhaps someone with a shroud and hydrolic clutch may chine in and help me out
In the world of reality, the HP gains as compared to a clutch fan system (after factoring in the increased amp on the altenator which increase drag) is about 5-8 hp...of course that is flywheel hp, by the time you run that through the drivetrain......3-5 hp is about it. When you compare the mechanicals vs e-fans on the f150 5.4....it accounts for 1 mpg increase....
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70 mach 1 electric fan options
