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  #1  
Old 07-12-2018, 12:14 PM
Carolina Tee Bird Carolina Tee Bird is offline
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Default flex fan recommendation

Comments on overheating indicate a flex fan blade is better for moving more air. Will try a 7 blade flex fan blade. looks like a 17" would fit. There are several to choose from.Summit or ebay. I want to move as much air as possible at idle. Anyone have a recommendation. Currently have a 16" 6 blade hard blade. I noticed in previous post a diagram showing space between fan blade and radiator should be 1". my measurement is 2 inches. Is there a spacer to move the blade forward? Thanks as always
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Old 07-12-2018, 01:31 PM
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DKheld DKheld is offline
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I used an 18 inch flex fan off a '72 Tbird with a 400ci engine.

Fan part # is D2VY8600A

I needed a shorter spacer since I was changing pulleys to add A/C. Found what I needed from Flex-a-lite. I would be they will have the longer one you need (don't forget to get longer bolts).

Order it by the hub and pilot size then the length. Pilot is .625 - think the water pump hub is also .625? but hopefully you have something you can measure it with.



I needed a 1 inch hub to .625 pilot 1 inch length spacer and flex-a-lite had it.




Here was a test fit of the flex fan before I painted it white.



Pic of the OEM 4 blade non A/C fan ,then the OEM 5 blade fan for A/C and finally the 7 blade Ford Flex fan.



Lots less fan noise on the interstate and pulls a bunch of air at idle.

Eric
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Old 07-13-2018, 09:58 AM
Carolina Tee Bird Carolina Tee Bird is offline
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Great to hear, thanks so much for this response, most helpful!!!
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Old 07-13-2018, 12:15 PM
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I run a 7-blade flex (Hayden I believe 18")
with a shroud. It will run out of gas before it will
over heat
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Old 07-13-2018, 12:15 PM
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byersmtrco byersmtrco is offline
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Quote:
Originally Posted by byersmtrco View Post
I run a 7-blade flex (Hayden I believe 18")
with a shroud. It will run out of gas before it will
over heat
Oh . . . I have a 4 row core
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Old 07-13-2018, 03:10 PM
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sidewalkman sidewalkman is offline
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I bought an 18" Flexolite, comes in colours, you'll also need a spacer, I think mine is 1.5 inches but take a measurement. BUT it really didn't do much for getting hot at idle. I added a 160 degree thermostat, that helped but the biggest help I got was adding the 2 piece shroud off a 61-63 t-bird. Made all the difference, I've sat in traffic for 3/4 of an hour and kept the motor running, never went above the M on the gauge.
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Old 07-13-2018, 03:49 PM
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Quote:
Originally Posted by Carolina Tee Bird View Post
Comments on overheating indicate a flex fan blade is better for moving more air. Will try a 7 blade flex fan blade. looks like a 17" would fit. There are several to choose from.Summit or ebay. I want to move as much air as possible at idle. Anyone have a recommendation. Currently have a 16" 6 blade hard blade. I noticed in previous post a diagram showing space between fan blade and radiator should be 1". my measurement is 2 inches. Is there a spacer to move the blade forward? Thanks as always
The shroud makes a HUGE difference. !!!!!!!
It would be REALLY cool to find a metal shroud off a full size Ford or Merc. It would look more orig AND fit better. There's about a 1" gap on the aftermarket fiberglass re-pop.
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Old 07-13-2018, 03:59 PM
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Quote:
Originally Posted by byersmtrco View Post
The shroud makes a HUGE difference. !!!!!!!
It would be REALLY cool to find a metal shroud off a full size Ford or Merc. It would look more orig AND fit better. There's about a 1" gap on the aftermarket fiberglass re-pop.
I bought a 2 piece original, there's another piece covers the top that I didn't get but when all 3 are on it looks stock, radiators didn't change.
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Old 07-13-2018, 03:59 PM
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YellowRose YellowRose is offline
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Default flex fan recommendation

My shroud on Rose is a metal one off a Bulletbird and it, along with a 6 bladed flex fan, works great. It also helps if your radiator and thermostat is operating up to snuff... You can find these Bulletbird shrouds on eBay still, at times. Also, you can get the plastic ones from the Tbird Parts Stores. I know that Lance at Tbirds Southwest has or had them.
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Old 07-13-2018, 04:21 PM
Tbird1044 Tbird1044 is offline
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I pretty much followed the same path as Scott, however I got lazy and spent the big bucks for the aftermarket fan shroud. I installed a Flex A Lite 2018 (18") fan, 6 blade, with appropriate spacers so the fan is set up according to the recommendations that are shown in DKhelds post. http://www.squarebirds.org/vbulletin...ad.php?t=22919
The 18" fan had adequate clearance to the shroud, although it it a bit tighter than the 1" recommendation.
As for the spacers, here is a heads up. As I remember, the spacer needs to have a 1" register to the water pump and then goes to 5/8" register to the fan. If you need a second spacer, which I did, it needs to have a 5/8" register on both ends. I had to get longer bolts, so off to the hardware store for some Grade 8 bolts.
On a hot day with the AC on, the temp will still climb to the top of the M in stop and go traffic or idle, but comes right back down when I get moving.
Nyles
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