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12-24-2019, 05:53 PM | #1 |
Senior Member
Join Date: Feb 2017
Location: Dothan, AL
Posts: 325
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Fan, Radiator, Shroud
Hey Guys,
For my 39 pickup am I looking for 1 inch for the fan blades from radiator, and 1 inch clearance between end of fan blades and shroud. |
12-24-2019, 06:17 PM | #2 |
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Join Date: Jun 2013
Location: east coast
Posts: 113
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Re: Fan, Radiator, Shroud
Sounds right to me, 1" Minimum clearance, but it can be more.
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12-24-2019, 10:06 PM | #3 |
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Join Date: Jan 2019
Location: Chicago
Posts: 711
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Re: Fan, Radiator, Shroud
I agree, could be more away from the radiator. That's the beauty of using a shroud, fan does not need to be close to the radiator to do its job of pulling air through the radiator. I think what that diagram is telling you is: use spacers as necessary to have the fan half in / half out of the rear edge of the shroud. I believe that is the optimum fan location for evacuating air out of a shroud.
On the other hand, you don't want more than 1 inch around the perimeter of the fan, between the fan blade tips and the shroud. You have to buy fan and shroud sized to work together. Last edited by JayChicago; 12-24-2019 at 10:15 PM. |
12-25-2019, 10:08 PM | #4 |
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Join Date: May 2010
Location: Coral Springs FL
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Re: Fan, Radiator, Shroud
There is a lot of info on fans, shrouds and distances on the internet.
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12-25-2019, 11:08 PM | #5 |
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Join Date: Feb 2017
Location: Dothan, AL
Posts: 325
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Re: Fan, Radiator, Shroud
I like the looks of the WS-40 I think is the number. Just not positive yet my fan will go that high up on the radiator.
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12-25-2019, 11:22 PM | #6 | |
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Location: SF Bay Area
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Re: Fan, Radiator, Shroud
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Quote:
To quote Jay, that's the beauty of using a shroud. The fan can be positioned high or low, it will work the same, as the shroud/fan creates a vacuum, pulling air through the entire radiator, not just where the fan is located.
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12-26-2019, 04:26 PM | #7 | |
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Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
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Re: Fan, Radiator, Shroud
Quote:
a number of years ago. Temp never got to 180 and came down 3 or 4 degrees when I raced the engine a little. This is some larger Ford truck shroud installed upside down with thin strips of 16 gauge steel on each side for mounting. I think it has 180 old Robertshaw 360-180 stats that have larger flow openings that don't restrict the flow. The fan is an industrial fan I found in Schramm compessor's attic. You should also have a 3 lb pressure cap, clean radiator and the fan belt properly adjusted. G.M.
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