So I knew my fan blade was bent and out of balance from the begining, but I just really didn't think too much of it... well. Within 1000 miles it destroyed my water pump. When hot, it would whine and coolant would drip from the pulley. So i needed a new water pump. I upgraded to a nice hi flow unit from FlowKooler. It claims the modern design impeller blades move 50% more coolant at idle. Then I went to purchase a new metal fan blade... and thats where our story today starts.
I've always wanted to put an electric fan on something, so when I saw that a quality replacement metal fan was $120+ I decided to start looking into electric options. Its actually a pretty common upgrade in the flat fender world. So i ordered a 14" Derale 1850 CFM puller.
With the stock fan, I didn't run a shroud. Never needed it. Even in AZ the little jeep never got above 185 even on really hot days. But I wanted to have the most efficient cooling system I could come up with. So I took a scrap piece of 18g aluminum and decided to learn how to make a fan shroud.
I measured, drew everything up and bent the flanges.
I don't have a sheet metal brake, so I just clamped the sheet down on a sharp edge and hammered it with a soft dead blow hammer.
Made some brackets and brazed them to the radiator. I had never done this before, but I watched a few vids on Alumiweld rods. You can use map gas or even propane to heat it up.
We will see how it holds.
Cleaned up the surface with 220 grit DA and red scotchbright.
The new setup tucks in there perfectly. Just need to wire it up now.