Will a fan shroud help reduce temps? - Page 3 - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #31 of 58 (permalink) Old 01-12-2019, 06:12 PM
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Re: Will a fan shroud help reduce temps?

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Originally Posted by RAGGAREN View Post
in this/my application air gets drawn thru whole core...
Cool, I see how that works.

Putts drives a 1965 customized Galaxie. Rebuilt 390, 4100 electric choke on a Performer, MX, AC, PS, PB w Scarebird front discs on Cragar 17" S/S.
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post #32 of 58 (permalink) Old 01-12-2019, 08:58 PM
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Re: Will a fan shroud help reduce temps?

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But, as we all know, many laws including the laws of physics seemingly do not apply in SanFran. Have fun dodging needles and turd piles!
wow.... been sipping some of the Thrump kool aid

your not getting my point..
these fans would be more effective if moved back an inch mounted on a shroud..
currently these fans are only move air at the mounted spot...

Quote:


%201964%20Galaxie/?action=view&current=09-03-10_1408.jpg Lars...
64 galaxie 500 2dr fastback...390 4v, Bendtsen adapter, maddog's stage3 700R4 trans,3.70 Posi..far from perfect but getting there...

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post #33 of 58 (permalink) Old 01-13-2019, 06:21 AM
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Re: Will a fan shroud help reduce temps?

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Originally Posted by RAGGAREN View Post
wow.... been sipping some of the Thrump kool aid
your not getting my point..
these fans would be more effective if moved back an inch mounted on a shroud..
currently these fans are only move air at the mounted spot...

Lol! It's amazing how many people are experts on areas that they've never been to.


Anyhow, I agree your fan setup is going to be better.... overkill but better for sure. Those tiny fans in the picture you quoted don't cover much of the radiator. I spent a little bit of time trying to find the largest that'd cover the rad. Anyway, if it works, it works :P

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post #34 of 58 (permalink) Old 01-13-2019, 08:02 AM
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Re: Will a fan shroud help reduce temps?

Air will always take the path of least resistance. If there is no shroud forcing the air to travel through the radiator, the majority of the air will simply flow around it.

What's often the most cost effective and reliable solution... is to find an OEM electric fan/shroud combo in a salvage yard that fits your radiator, and is thin enough to fit.

Good Luck
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post #35 of 58 (permalink) Old 01-15-2019, 08:10 PM
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Re: Will a fan shroud help reduce temps?

One thing that gets overlooked when there's overheating issues is air flow after the radiator. Headers can constrict airflow by occupying a large space at the cowl. What the OEM does is add a small air dam under the core support, what this does is make vacuum behind the radiator helping air flow. A small 2" lip across your core support will make a difference.

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post #36 of 58 (permalink) Old 01-16-2019, 09:06 AM Thread Starter
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Re: Will a fan shroud help reduce temps?

Yeah, if I was having issues overheating while driving on the freeway I would be more concerned about this but it's generally only when idling or driving on surface streets.
I just about have my car dialed in now though. Adjusted my timing and will install the new fan as soon as soon as the rain stops

Quote:
Originally Posted by Iowan View Post
One thing that gets overlooked when there's overheating issues is air flow after the radiator. Headers can constrict airflow by occupying a large space at the cowl. What the OEM does is add a small air dam under the core support, what this does is make vacuum behind the radiator helping air flow. A small 2" lip across your core support will make a difference.
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post #37 of 58 (permalink) Old 01-17-2019, 07:01 AM
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Re: Will a fan shroud help reduce temps?

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Yeah, if I was having issues overheating while driving on the freeway I would be more concerned about this but it's generally only when idling or driving on surface streets.
I just about have my car dialed in now though. Adjusted my timing and will install the new fan as soon as soon as the rain stops
Since it does fine on the road, it's not a radiator capacity issue... It's 100% airflow through the radiator. A good fan/shroud will fix it.
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post #38 of 58 (permalink) Old 01-17-2019, 09:02 AM
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Re: Will a fan shroud help reduce temps?

Hey thanks for the reply on this --look forward to it ! Norm

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Originally Posted by femurphy77 View Post
I'll have to look it up to see which pulley I ended up using but it was noticeably larger than the one that was originally on the car. I wish I could help you out on the donor for the electric fan/shroud I have but I bought it from a buddy that had sourced it at the local u-pull. I'll snap a pic of it to give you an idea what it looks like tomorrow.


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post #39 of 58 (permalink) Old 01-17-2019, 09:10 AM
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Re: Will a fan shroud help reduce temps?

x2 !! I already have this on my junk yard list for this spring ..... If there's interest, and if I remember I'll report back on how it went, what car make I got it from, etc...

Norm

Quote:
Originally Posted by Iowan View Post
One thing that gets overlooked when there's overheating issues is air flow after the radiator. Headers can constrict airflow by occupying a large space at the cowl. What the OEM does is add a small air dam under the core support, what this does is make vacuum behind the radiator helping air flow. A small 2" lip across your core support will make a difference.


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post #40 of 58 (permalink) Old 01-17-2019, 05:03 PM
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Re: Will a fan shroud help reduce temps?

O.k. I've finally had a little time to go out and dig out the shroud and snap a few pics, this first one is a shot of the Volvo part number (I think) that is embossed on the shroud. Edit: Found a link for the shroud new; https://www.volvopartswebstore.com/p...3/3507347.html
This is a shot of the shroud overall laying on top of a factory radiator. With the reinforcement across the top of the factory radiator the shroud lays higher on the radiator so that the bottom 3/4" of the radiator isn't covered by the shroud.
Here's a shot of it across the top:
If you pull the shroud down to the bottom of the radiator it won't allow the top of the shroud to lay down, that's why it's laying at a slant with a gap:
Here's a better shot of what I'm talking about:
Finally here's a pic with the fan installed in the shroud. It's a clean installation on the aftermarket aluminum radiator I use, you can see a small semi circular cut out on the lower left of the shroud to clear the bottom radiator hose in one of the pics.
The parts came with dual temp switches so that the fan comes on at a lower temp at half speed and then kicks into high when the temp reaches a higher setting. The reason I didn't use it is because it's such a tight fit to the water pump/pulley. It was less than 1/2" for the two parts which was too close for me. It may be possible to alter something to gain a little more clearance and will follow up with that when I get ready to install a Vintage Air system in the car.

xx

Last edited by femurphy77; 01-18-2019 at 04:57 AM.
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post #41 of 58 (permalink) Old 01-17-2019, 07:49 PM
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Re: Will a fan shroud help reduce temps?

Hey thanks for taking the time to snap all those pics, nice !

Yes I agree that fitment is a bugger on these Gals, heck I may wind up doing something like Drew did ! :p

thanks much ! Norm

Quote:
Originally Posted by femurphy77 View Post
O.k. I've finally had a little time to go out and dig out the shroud and snap a few pics, this first one is a shot of the Volvo part number (I think) that is embossed on the shroud.


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post #42 of 58 (permalink) Old 01-18-2019, 04:55 AM
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Re: Will a fan shroud help reduce temps?

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Originally Posted by Minn64Gal View Post
Hey thanks for taking the time to snap all those pics, nice !

Yes I agree that fitment is a bugger on these Gals, heck I may wind up doing something like Drew did ! :p

thanks much ! Norm

Definitely a good looking installation! Have a good weekend!!
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post #43 of 58 (permalink) Old 01-18-2019, 05:52 AM
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Re: Will a fan shroud help reduce temps?

If you're using the Volvo fan/shroud... seal it off the best you can.
Good Luck!
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post #44 of 58 (permalink) Old 01-18-2019, 12:09 PM
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Re: Will a fan shroud help reduce temps?

Quote:
Originally Posted by femurphy77 View Post
This is a shot of the shroud overall laying on top of a factory radiator. With the reinforcement across the top of the factory radiator the shroud lays higher on the radiator so that the bottom 3/4" of the radiator isn't covered by the shroud.
Here's a shot of it across the top:
If you pull the shroud down to the bottom of the radiator it won't allow the top of the shroud to lay down, that's why it's laying at a slant with a gap:




xx
if you remove top lip. it would lay flat and cover most of radiator core..


measurement distance to water pump pulley

did you figure that with shroud flat or at an angle...

%201964%20Galaxie/?action=view&current=09-03-10_1408.jpg Lars...
64 galaxie 500 2dr fastback...390 4v, Bendtsen adapter, maddog's stage3 700R4 trans,3.70 Posi..far from perfect but getting there...
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post #45 of 58 (permalink) Old 01-18-2019, 01:15 PM
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Re: Will a fan shroud help reduce temps?

Quote:
Originally Posted by RAGGAREN View Post
if you remove top lip. it would lay flat and cover most of radiator core..


measurement distance to water pump pulley

did you figure that with shroud flat or at an angle...

The lip is only an issue on the factory radiator, until I took these pics it had been out behind the barn for a couple of years. With the lip in place it fits perfectly on the aftermarket radiator flat up against it. The clearance was with it properly installed. Looking at it last night I could modify the factory upper shroud/mount and tilt the radiator forward enough to clear the water pump pulley I think.
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