02-16-2020, 04:52 AM | #1 |
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Join Date: Sep 2016
Location: sydney australia
Posts: 1,029
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fan shroud 39
hey guys does anyone know of someone that makes a shroud kit that will fit a 6 blade crank driven fan
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02-16-2020, 02:41 PM | #2 |
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Join Date: May 2010
Location: Oshkosh, Wi
Posts: 4,525
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Re: fan shroud 39
I bought a fiberglass shroud from Speedway that fit the radiator nicely. Had to cut the hole for the fan. Really helped the cooling in traffic at slow speeds.
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02-16-2020, 05:45 PM | #3 |
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Join Date: Jun 2014
Location: Williamsburg, VA
Posts: 1,627
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Re: fan shroud 39
Pictures show the partial shroud I tried from Speedway. It zip-ties through the Champion aluminum radiator core. It leaves a big gap at the bottom. I added a spacer to get the fan blades just inside the shroud and about 1" from the core. I hoped it would help cooling at idle, but the improvement was minimal. Took about ten minutes at idle to overheat (210+) on a hot day, versus maybe five minutes without the shroud. A added a baffle and foam to block air flow around, over or under the radiator to improve cooling at interstate speeds (60+) on a hot day. Also minimal improvement. Biggest disappointment was adding Dennis Carpenter water pumps, designed to improve flow at idle, also made minimal improvement.
What fixed the problem was squeezing in a much bigger brass/copper truck radiator. Lesson: If you add 20% displacement and high compression, you better add 20% radiator area. |
02-16-2020, 06:05 PM | #4 |
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Join Date: May 2010
Posts: 3,019
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Re: fan shroud 39
At Flat Jacks suggestion I purchased a shroud from Speedway for my '41 1/2 ton, crank mounted fan. I installed the shroud up side down which nicely closed things up. I'm
running a genuine Ford radiator with no issues. Prior to the shroud it boiled in traffic. Charlie ny |
02-16-2020, 06:27 PM | #5 | |
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Join Date: May 2010
Location: Oshkosh, Wi
Posts: 4,525
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Re: fan shroud 39
Quote:
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02-16-2020, 06:28 PM | #6 |
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Location: sydney australia
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Re: fan shroud 39
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