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Discussion Starter #1
I have a 4.3 that sometimes runs on the hot side. I used to run dual black magic fans and it was ok at times, but would heat up. Since have replaced with a 6 blade clutch fan

Results were pretty good, but I am hoping to do better

Would mounting 1 of my black majic fans in the front of the rad help in conjunction with the mechanical fan?

I am assuming it would to help draw the heat out, but should it be sucking air through the rad or pushing it through since there is a mechanical fan on now.
 

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You want them to flow together.
 

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YOU NEED A AWSOME FAN SHROUD TOO,

cant say it enough,

especially on trail and in slow areas

really HELPS

and a really good water pump too.

not cheap,

But a Really Good H2o pump.

Good luck,
Tell us what fixed it in the end.
 

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I have been running 2 electric fans for over 1 year. they cooled WAY better than the stock mechanical fan that was on there. Even with a built up engine it is cooling the same!
 

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two words...

Viper fan :D

something like 4000cfm. That is what I have planned for my buggy
 

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This may sound stupid but couldn't you reverse the polarity on the e fan to be a pusher or a puller? Never tried it just curious.
 

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Brawler said:
This may sound stupid but couldn't you reverse the polarity on the e fan to be a pusher or a puller? Never tried it just curious.

Yes and no, ONLY if the blade can be flipped over. They are directional.
 

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The Viper fan is awesome. Another very good electric fan is the OEM unit off of a 3.8 liter supercharged Ford Cougar or Thunderbird Turbo Coupe. They are 2 speed with a huge motor, will kick the shit out of any aftermarket fan.
 

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I've found that some of the best electric fans come off of old rice burners. Just go to the local junkyard and pull some off an old honda/toyota/mitsu/datsun. Most have dual fans and nice fan shouds too and suck a bunch of air. Their radiators don't do a bad job either even though they are made for 4 cyclinders I put one behind my V6 and only have to use my electric fan in the middle of summer while wheelin! Make sure you have it flushed though makes a huge difference especially for the ones out of older cars.
 

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early 80's toyota Celica GT its small too like 26" wide and thin too but it works good. If you get the radiator and fans as a pair they match up real good too. Before i had one out of an Isuzu impulse (some small truck) and it worked just as well until a tree on a trail went through my grill and pushed it into the mechanical fan i had on before.
 

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Discussion Starter #14
Rad is a AA radiator

I ran with the elect fan on and temps were right around 165, off it was 190, never higher, but then again it was about 15 degree's out

:D

fAN mounted in front of the rad and also Pushing the air into the rad/through the engine compartment.

Actually I am thinking it was wired the wrong way and not flowing properly when it was setup on the backside of the rad.

I am gonna put the second one I have on the landcrusier in front of the rad also and try that.
 

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Which 4.3L are you running, and in what vehicle? I have a 95 4.3L in my 88 YJ, and have absolutely no cooling problems. I could blow on the radiator without a fan and it would run cool. I do not think your problem is in your fan, but someplace else. When does it get hot?

Ben
 
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