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08-20-2020, 06:19 PM | #1 |
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Cooling for 49 hot rod
Finally figured out how to install near stock crank driven 18 inch cooling fan for my 92 ford 302 in my 49 woodie.
Just got back from the radiator shop, had the water return pipe raised about an inch. Moving the radiator 3 inches forward and raising the return pipe gives me just enough room to install an 18 inch heavy duty flex fan on the crank with a 2 inch spacer. The radiatior is 20 inches wide and the 18 inch fan will have 1 inch of room on all sides for the fan shroud I'm making. Don't believe the 16 inch electric fan I had installed would move this much air! After this I'll have to modify the bumper sheet metal as well.
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08-21-2020, 02:42 AM | #2 |
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Re: Cooling for 49 hot rod
Everything depends on the geometry of the shroud and its relationship to the fan.
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08-21-2020, 08:21 AM | #3 |
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Re: Cooling for 49 hot rod
Hope it all works out for you. Fill job on the original water neck looks a little rough for an expensive Walker. Can you make it look smoother with JB Weld or Bondo?
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08-22-2020, 03:45 PM | #4 |
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Re: Cooling for 49 hot rod
Making progress on fan shroud.
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41 woodie https://41fordwoodie.weebly.com/ Last edited by mrtexas; 08-23-2020 at 07:36 PM. |
08-22-2020, 06:36 PM | #5 |
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Re: Cooling for 49 hot rod
Fine Mexican craftsmanship, cost $45 to move. At least there still are radiator shops! Not too many brass radiators anymore.
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08-27-2020, 06:40 PM | #6 |
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Re: Cooling for 49 hot rod
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08-28-2020, 09:32 AM | #7 |
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Re: Cooling for 49 hot rod
Am I imagining it or does that flex fan have a CCW rotation?
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08-28-2020, 10:15 AM | #8 |
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Re: Cooling for 49 hot rod
good catch- it is mounted backward.
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08-28-2020, 11:21 AM | #9 |
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Re: Cooling for 49 hot rod
The flow of air remains the same on a fan mounted either way.
The one shown appears to be CCW specific.
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08-28-2020, 12:08 PM | #10 |
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Re: Cooling for 49 hot rod
This Ford 302 is counter clockwise. I checked after the parts guy told me. Not as many fans available CCW!
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08-28-2020, 12:42 PM | #11 |
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Re: Cooling for 49 hot rod
Yep, makes sense with a serpentine belt. (engine still runs CW)
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08-28-2020, 01:09 PM | #12 |
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Re: Cooling for 49 hot rod
Look up Snow White water pumps, they make a shorter water pump for 289-302 Ford engines.
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08-28-2020, 09:18 PM | #13 |
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Re: Cooling for 49 hot rod
Crank(engine) runs counter clockwise.
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08-28-2020, 10:19 PM | #14 |
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Re: Cooling for 49 hot rod
I installed a 302 in my '41 Fordor with stock pump driven fan. no mods to the firewall and a Walker 4 core with Walker fan shroud. just raised the radiator 2" and fit perfectly. used a stock Ford 4 blade fan, cut about 3/4" off each blade tip to clear either a hose or crank pulley. ran 175 deg. maybe I'm missing something here!
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08-29-2020, 04:45 AM | #15 |
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Re: Cooling for 49 hot rod
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08-29-2020, 09:44 AM | #16 |
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Re: Cooling for 49 hot rod
Crank mounted 302
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08-29-2020, 12:36 PM | #17 |
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Re: Cooling for 49 hot rod
Are you saying that the fan is mounted on the crankshaft?
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08-29-2020, 02:03 PM | #18 |
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Re: Cooling for 49 hot rod
yes
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08-29-2020, 03:55 PM | #19 |
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Re: Cooling for 49 hot rod
.
Man, you're gonna have to convince me just a little bit more. If that "backwards-pitched" fan blade is attached directly to the crank, and that crankshaft rotates CCW as viewed from the front, what kind of transmission do you have that converts rotation back to NORMAL for the drive shaft and rear end? I can't think of ANY modern (or old) vehicle with an engine crankshaft rotating CCW as viewed from the front. Please prove me full of it! DD |
08-29-2020, 10:23 PM | #20 | |
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Re: Cooling for 49 hot rod
Quote:
Why would you need to "raise the return pipe"?? Putting the fan down there on the crank snout moves it away from the upper hose, not closer! However, the photos show the fan mounted in the usual location on the water pump shaft. The fan is obviously reverse rotation so won't work on the crank anyway. I'm missing something. What is going on here? |
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