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Author
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Topic: Electric fan advice
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threethirty1
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Member # 7814
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posted
 
 
Can anyone recommend a good electric fan set up? Any wiring tips? thx
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1987 Black GT
factory zero option car
Posts: 777 | From: North Bay | Registered: Jul 2007
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Blind
2.3L
CAFords OG
Member # 3052
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posted
for a foxbody?
first, get a 3g alternator from an SN95 5.0
I personally run a modified lincoln mark8 fan with a thermostatic switch for the low speed turn on, and a manual switch for the high speed setting.
each switch needs a relay, each relay wire up with 12awg wire to power and ground, and then use smaller gauge, I used 16awg, to connect each switch inline with a 12v+ source, for my temp sensor I used a hot on run source, and for my manual switch I used an always on source.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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threethirty1
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Member # 7814
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posted
Yes, on a fox, can I run the stock alt. for now? I was thinking about a flex a lite or perma cool off summit. Is 2,500 cfm enough for a 331 in LA traffic? Also what about just a manual switch? thx
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1987 Black GT
factory zero option car
Posts: 777 | From: North Bay | Registered: Jul 2007
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GreyLX
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Member # 5601
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posted
Manually switching SUCKS. It's what I am doing now on my turbo car and it is such a hassle to turn it on and off all the time. You also need to have a good autometer gauge to get an accurate read on the temp. As far as the fan goes, I am using the Mark 8 fan that I picked up on here for $40 ![[Big Grin]](biggrin.gif) . You need to upgrade to a 3G alt and run a FAT relay.
[ February 28, 2008, 12:36 AM: Message edited by: GreyLX ]
Posts: 337 | Registered: Apr 2005
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87droptop50
Go Giants!
Member # 7185
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posted
4 sure if you go with an electric fan .get an sn95 alternator. i tried using the fan with out it and i ended up buying a new alt.& batary
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HighSpeed Motorsports
87Mustang Gt Conv kurgan tuned
03Harley F150 #5023
69El Camino SS396 -sold
99 f350 7.3 DRW
Posts: 3855 | From: SF | Registered: Oct 2006
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Blind
2.3L
CAFords OG
Member # 3052
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posted
quote:
Originally posted by threethirty1:
Yes, on a fox, can I run the stock alt. for now? I was thinking about a flex a lite or perma cool off summit. Is 2,500 cfm enough for a 331 in LA traffic? Also what about just a manual switch? thx
I don't like any of the aftermarket fans, personally I think they look hack job when they're installed.
this is what my setup looks like...runs at the thermostat temp all day long, no matter how or where I'm driving it.
this is how much material has to be cut off from the fan shroud to fit right.
and no, you can't use a stock alternator with an electric fan, the stock alternator is rated to 65amps at full charge, at idle it puts out about 25 or 30 amps, a good fan like a mark8 draws about 40amps when it's kicked on to high speed, and about 15-20amps while its running.
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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threethirty1
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Member # 7814
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posted
Thanks for all the info guys. ![[patriot]](graemlins/patriot.gif)
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1987 Black GT
factory zero option car
Posts: 777 | From: North Bay | Registered: Jul 2007
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92stangLX
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Member # 3252
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posted
Mark VIII or Taurus fan. If you need something low profile go with the Ramcharger's dual fan setup.
You will need a wiring kit (like the one Painless Products sells).
And like Blind said.. upgrade your alternator and use a thermostat
Here's a good write up on the Lincon setup
http://www.fordmuscle.com/archives/2006/10/Mark8Fan/index.php
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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BCINGUU
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Member # 2397
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posted
Think hard before you do this. If you go electric, you will not be able to produce as much airflow and thus your car will run hotter. You will also introduce a big load on your electrical system.
Ask yourself why you want to do this, are you trying to gain horsepower? You won't notice the difference. Are you trying to get better cooling? Then you are going in the wrong direction. What are you trying to gain? I doubt it will turn out like you expect.
Just trying to give you a sanity check. I went down this road, spent a lot of money and faced a lot of hassle (such as when my fan stopped working and my nice expensive engine shot up to 270 degrees). In the end I went back to stock.
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93 Cobra #4563 347ci 12.0@118 505rwhp 524tq
90 GT "Saleen Cobra" style convertible 347ci
67 GT "Eleanor" style coupe 347ci
Posts: 1425 | From: San Jose, CA | Registered: Jan 2003
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threethirty1
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Member # 7814
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posted
OK, so what can I do?
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1987 Black GT
factory zero option car
Posts: 777 | From: North Bay | Registered: Jul 2007
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Blind
2.3L
CAFords OG
Member # 3052
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posted
quote:
Originally posted by BCINGUU:
Think hard before you do this. If you go electric, you will not be able to produce as much airflow and thus your car will run hotter. You will also introduce a big load on your electrical system.
Ask yourself why you want to do this, are you trying to gain horsepower? You won't notice the difference. Are you trying to get better cooling? Then you are going in the wrong direction. What are you trying to gain? I doubt it will turn out like you expect.
Just trying to give you a sanity check. I went down this road, spent a lot of money and faced a lot of hassle (such as when my fan stopped working and my nice expensive engine shot up to 270 degrees). In the end I went back to stock.
that's odd, the only time I -ever- had a cooling problem with an electric fan was with a POS after market black magic fan, because the mounts broke off the top of my radiator when I downshifted at an autocross and the fan fell off. Even before that I had the temp control unit on the fan dye, so it only worked with a switch, that fan was a pile of crap...
After I replaced that fan with the mark8 fan, which is OE on a heavier car with a smaller radiator that has a tranny cooler inside it also, and a 4.6L DOHC v8, I have never had a problem, the fan hardly ever turns on with the temperature switch.
if electric fans are so horrible, why did ford do away with clutch fans on the mustang completely in 1994 (14 years ago) ... ?
[ February 29, 2008, 09:45 PM: Message edited by: Blind ]
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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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BCINGUU
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Member # 2397
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posted
quote:
Originally posted by Blind:
that's odd, the only time I -ever- had a cooling problem with an electric fan was with a POS after market black magic fan,
I think that whether you have problems or not with an electric fan depends on your cooling needs. Even a Mark VIII fan, which flows 4000 cfm and pulls more air than any other electric fan, flows only half as much as a stock mechanical fan with a heavy duty clutch. If your engine combo doesn't produce a lot of heat then you may not need that much flow. But my combos do.
quote:
Originally posted by Blind:
if electric fans are so horrible, why did ford do away with clutch fans on the mustang completely in 1994 (14 years ago) ... ?
Hmm, it sounds like you're implying that Ford makes their engineering decisions based on performance, not cost? ![[Wink]](wink.gif)
Wow, has it really been 14 years already? I remember when the SN95 was the hot new car, with its modular engine and all... like it was yesterday...
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93 Cobra #4563 347ci 12.0@118 505rwhp 524tq
90 GT "Saleen Cobra" style convertible 347ci
67 GT "Eleanor" style coupe 347ci
Posts: 1425 | From: San Jose, CA | Registered: Jan 2003
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