Electric fan question

[Archialfa]

I have no clue. Is there?


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[cudabob496]

I have the output wire from the alternator going through an aftermarket ammeter
inside the car, then to the starter relay 12v post.  Upon starting, I'll see about 30
positive amps on it, as the alternator is charging the battery. Then it settles to about
5 to 10 amps.  Or will jump 10 amps if I turn on my elelctric fan.  If you do this mod, use
a heavy gauge wire.  I'm using 8 gauge I think.

[Archialfa]

Any experience with these?

http://www.classicindustries.com/product/mopar/e-body-challenger/parts/fl210.html

Since I'll be doing a custom made radiator, it would be great if I could get a off-the-shelf electric fans set like this one.

(BTW my ammeter is already bypassed like YellowThumper suggested. My mechanic and myself checked and it was done by one of the previous owners.)

[Chryco Psycho]

Is there are way to have the alternator tested for output???

Yes . any rebuilder can test the output

[RCCDrew]

If the shipping is an issue, find some fans in a junkyard that will work.  I got my dual electric fans off a daewoo. They work and flow lots of air.

[Archialfa]

Yeah, I was thinking to do something similar. Either getting a double fan off some European car brand or go for a used one. Since The radiator will be custom made I can make it to fit the fan(s).


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[johannes]

Be advised that your thermostat controlled electric fan will NOT consider the underhood temperature....only the water temperature .    having a massive radiator.... The coolingwater might be good...but.... Lack of airflow MIGHT cause issues.... Boiling gas....melted wires servo steering oil temp automatic transmission oil temp etc...etc...I wrote for mechanical fan....

[72bluNblu]

I run a dual electric fan set up on a 26" radiator. This is in my Duster, but it's the same radiator as a 26" E body. The fans come courtesy of a 1995-2000 Ford Contour V6. Dual electric fans, high and low speed, with a shroud that just about fit my 26" Champion radiator like it was made for it. To get it mounted I added a couple of 1/8" by 2" aluminum bar, and used the original mounting brackets on the fan. The low speed on the fan is good for 3400 cfm, the high speed is over 5000 cfm.



I bought the fans new (Dorman 620-104), but hit the local PickNPull and picked up a spare set up that had the complete harness still attached. The entire set up is routed through a Dakota Digital controller, PAC-2750. It lets you program all the on/off temps, uses my autometer water temp gauge sending unit, and even allows me to program the fans to run after shut down for up to 5 minutes (and kills the fans if the battery gets low).

http://www.summitracing.com/parts/dak-pac-2750/overview/

I did have to buy an extra relay for the dual fan set up https://www.summitracing.com/parts/dak-rly3/overview/

The whole thing uses a 100 amp TuffStuff alternator, it looks like the standard squareback alternator (except for the powercoating), and uses the stock external voltage regulator. Works flawlessly to cool my 400+ hp, .060" over 340 even in 100+*F temperatures, even in traffic. Important for me since I use the car as my daily and it's not uncommon to break 100*F in the summer.

[Archialfa]

Thanks 72bluNblu, that's what I call a reply! 

[72bluNblu]

Thanks 72bluNblu, that's what I call a reply! 

No problem!

I think most people have bad experiences with electric fans because they don't set up the system correctly. You need to have a fan that flows enough CFM, has a shroud that was designed to work with that fan, and use a controller that accurately controls the fans. If you hook a great fan to a crappy controller, it won't cool properly. If you hook a crappy fan to a good controller, it won't work properly. And you need to have a good shroud and enough juice to run everything.

The problem is that there are some really expensive aftermarket fans that really don't flow all that much air. People spend a ton of money on big name aftermarket fans that don't flow enough cfm for their application, then just assume all electric fans suck. The 95-2000 V6 Ford contour fans and shroud is like $115, and yet it flows twice as much air as a lot of fans that cost twice as much or more. And it was designed to last a hundred thousand miles crammed in a tiny little engine compartment with no airflow and a big (relatively speaking) V6.

If you decide you want to run that fan set up, let me know, I have a diagram on PDF made by a member at another forum that shows how to wire the fans and controller that I can email you, just shoot me a PM.

[GoodysGotaCuda]

I used a Chevy HHR fan with pretty good results, they are around $55 new and fit a 22" wide radiator pretty well.Not sure what i'll do now with a 26" wide.

[72bluNblu]

For a 26" radiator set up I don't think you can beat the Ford Contour set up I posted above. It works great on my car, and as I've said I drive it often enough in 100+*F temperatures in traffic to be pretty convinced it will work for just about anybody. I would recommend at least a 100 amp alternator for it though, that's the only draw back.

[GoodysGotaCuda]

For a 26" radiator set up I don't think you can beat the Ford Contour set up I posted above. It works great on my car, and as I've said I drive it often enough in 100+*F temperatures in traffic to be pretty convinced it will work for just about anybody. I would recommend at least a 100 amp alternator for it though, that's the only draw back.

Hemi is a 140a alternator, so I should have that covered. 

Do you have any dimensions on the Contour fan?

[brads70]

Hemi is a 140a alternator, so I should have that covered. 

Do you have any dimensions on the Contour fan?

If you look it up on rockauto is has the dimension there. 

[72bluNblu]

Hemi is a 140a alternator, so I should have that covered. 

Do you have any dimensions on the Contour fan?