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Old August 5th, 2011, 06:54 AM   #21
GMKLR50
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try routing all the air that goes thru the grill in to the rad....air will take the easiest path out and the rad will be a restriction so the air that is hitting the face of the rad gets pushed up and down...try filling in the space at the bottom of the rad behind the grill as well at at the top...you want all the air movement to be forced thru the rad......lots of time is spent by the car companies controllling that air flow.
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Old August 5th, 2011, 09:04 AM   #22
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Yeah I have some sheets of plastic I was going to make some filler panels out of today. Dont know why I didnt do that when I first built this truck. The gaps around the top and side are huge.
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Old August 5th, 2011, 09:53 AM   #23
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Quote:
Originally Posted by JohnnyJ View Post
Is that this fan?

http://www.summitracing.com/parts/FLX-111/
"Electric Fan, Single, 12 in. Diameter, S-Blade, Puller, 1,250 cfm, Black, Plastic, Each"

If so, that seems underpowered for what you need. I dunno that it would be enough, even if you built up a shroud.

If you want to go electric, it seems that either stepping up to a better fan (like this one) or going the junkyard route with the Ford Taurus fan and a shroud.

I had a similar fan in my scrambler, which would never cool well at low speed. But at high speed, say 40+ mph on the highway, your fan really doesn't do much of anything. I would just turn mine off on road.

Thats why I asked the question. I would do what you suggested, to make sure that as much air as possible is getting through the grill and forced through the radiator itself.

The shroud only affects the performance of the fan itself.
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Old August 5th, 2011, 09:44 PM   #24
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Fixed it!


I went to the junkyard this morn and picked through a bunch of cars till I found a mid 90's Escort that had a single blade dual speed fan with shroud that was like it was made for my Explorer radiator. I then cut up some old seat foam to fill the gaps on the sides ofthe tanks and the gap at the top between the grill and the rad. No way for air to get around the rad now once it passes through the grill.

Drove it around from 4pm til about 10 tonite and it would come up to 190 and then drop back to 180 and then back to 190 so obviously a good sign since Im running a 185 t-stat right now.

Thanks for all the help guys! Surprised I made such an amateur mistake
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