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08-10-2013, 05:15 PM | #1 |
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Join Date: Jun 2013
Location: Stoughton, MA
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Upper air deflector installation
I have a quick question about installing an after market upper air deflector on my 1940 Ford Standard. I hope with everyone's wealth of knowledge and experience someone can guide me here. In order to correctly install it, do I have to remove the cross bar and two support bars for the grill? If so, I assume the rivits need to be drilled out and the support bars unbolted. Is there anything specifically I should be concerned about here? Any advice would be greatly appreciated.
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08-10-2013, 05:43 PM | #2 |
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Re: Upper air deflector installation
I didn't think you had to remove anything.Somebody should chime in here and correct me if I am wrong.Where did you get this air deflector?
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08-10-2013, 05:56 PM | #3 |
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Re: Upper air deflector installation
I remember someone recently had posted a picture of the deflector installed on the bottom side of the hood opening at the grill. I can't find the thread, but it should work the same if the installation is easier.
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08-10-2013, 06:52 PM | #4 |
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Re: Upper air deflector installation
You can make the air deflectors yourself and mount them inside the hood using a couple of dabs of adhesive caulking. I posted the photos a while back and now I can't find them.
No need to drill any holes are remove any original parts. |
08-10-2013, 07:20 PM | #5 |
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Re: Upper air deflector installation
The air deflector I bought is flat steel and shaped to fit. I'm not sure where I got it as I 've had it for awhile (either Mac's or C&G). I' m not too bright so I have to ask... Is the deflector attached to the hood, or, attached to the top of the grill and support?
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08-10-2013, 07:29 PM | #6 |
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Re: Upper air deflector installation
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http://www.bobdrake.com/Categories2....d=19sheetsprin My friend has one on his 40. |
08-10-2013, 07:35 PM | #7 |
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Re: Upper air deflector installation
Your's looks great 19Fordy. However, if I have to attach my deflector to the top of my grill and support, the support bar that runs l to r in front of the radiator has a slight bow to it and is higher than the top of the front of the grill. The deflector is rigid and won't fit flat.
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08-10-2013, 07:44 PM | #8 |
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Re: Upper air deflector installation
My deflector is stamped steel, part #01A-8327-A for a 40 Standard.
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08-10-2013, 08:36 PM | #9 |
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Re: Upper air deflector installation
Got mine from Drake and bolted it on. Sorry about the sideways thumbnail.
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08-10-2013, 08:42 PM | #10 |
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Re: Upper air deflector installation
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08-10-2013, 08:52 PM | #11 |
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Re: Upper air deflector installation
The defector is a great idea for better flow through the radiator. BUT, the design was for the greater air through, and the balance to flow over the engine, thus reducing the heat that would be transfer to the fire wall and the inside. Just my thoughts
__________________
1939 Fordor Deluxe 1939 Ford Coupe Std 1940 Ford pickup Nothing in life is to be feared; it is only to be understood. |
08-10-2013, 09:40 PM | #12 |
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Re: Upper air deflector installation
4dFord/SC. Thanks for the pic. It's the same as what I'm trying to accomplish with my Standard. My problem is there is a support bar under it that keeps it from lying flat on all three sides. Did you have to remove your grill support bar and struts?
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08-11-2013, 05:27 AM | #13 |
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Re: Upper air deflector installation
All I had to do was drill the holes for the bolts. There was no interference from the support bar or struts.
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08-28-2013, 05:24 AM | #14 |
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Re: Upper air deflector installation
Sorry I'm so slow with this reply, however I thought I'd add this quick postscript: My problem turned out to be the cross bar support, that runs in front of the upper radiator, has a slight arc to it. It must have been bent to bring in the fenders somewhat and for some reason. I'm going to try and straighten it out this fall, thereafter, the upper deflector should fit nicely. Thank you all for your input. Dick
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08-28-2013, 11:40 AM | #15 |
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Re: Upper air deflector installation
dp1743, Just for the heck of it ( before you start taking your car apart) make a deflector out of cardboard and tape it in place to see if it helps your cooling.
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08-28-2013, 11:45 AM | #16 |
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Re: Upper air deflector installation
Thanks 19Fordy. I did as you suggested and it worked wonders keeping my car cool. That's why I plan on installing the permanent deflector.
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09-04-2021, 06:38 AM | #17 |
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Re: Upper air deflector installation
I realize this post is 8 years old but someone may still chime in. question is does anyone make an air deflector for a 39 deluxe with the offset safety latch . thanks
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09-04-2021, 09:03 AM | #18 |
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Re: Upper air deflector installation
If someone did I would think it would be in one of the Vendor's catalogs.
Paul in CT |
09-04-2021, 09:22 AM | #19 |
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Re: Upper air deflector installation
Don't most overheating problems show up in stop-and-go driving, not at highway speed? Isn't this deflector going to be effective only at speed? I don't see how this deflector can help the fan pull more air thru the radiator when idling at a stop light.
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09-04-2021, 10:09 AM | #20 | |
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Re: Upper air deflector installation
Quote:
On my engine, better water pumps helped a little in traffic and baffles helped a little on the highway, but neither solved the problem. A truck radiator with more area solved the problem, plus lowering the percentage of antifreeze in the summer. Water transfers heat significantly better than antifreeze. |
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09-04-2021, 11:59 AM | #21 | |
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Re: Upper air deflector installation
Quote:
Below is a COPY/PASTE of a dissertation that I put up here on the forum in August of last year, describing what the "Front of Hood" deflector does to aid cooling on a '40 Ford. In fact, it was in reply to a post by "JayChicago". __________________________________________________ _________ That deflector performs a function that is not obvious unless you think about it. The fan pulls air through the radiator which hopefully carries heated air out through the two openings at lower rear of engine compartment. Air is just like electricity in that it is 'moved-around' via high and low pressures, and air also takes the path of least resistance. The fan creates a low pressure situation to draw COOL air in through the radiator, which of course absorbs heat from the water. The back side of the fan pressurizes that air, forcing it across a hot engine which must heat the already warm air to SOME further degree, and on toward the rear of the engine compartment looking for a way to escape.....the path of least resistance. Some of that air hits the firewall and bounces upward and forward up into the hood cavity. That big hood cavity is full of hot air that moves forward, because it is also being affected by the vacuum of the fan sucking air from the grill area, as well as HEATED air that can come forward OVER the top of the radiator, and back down into the airstream being sucked through the radiator. That deflector prevents the fan from sucking already-heated air in the hood back across the top of, and back through the radiator again. Of course, there's one guy who figures that deflector doesn't do 'squat', and that HIS way, as usual, is "THE ONLY Way" that works! Click the link BELOW to find out what this 'nay-sayer' had to say about MY theory. DD https://www.fordbarn.com/forum/showp...5&postcount=24 . |
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09-04-2021, 01:14 PM | #22 |
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Re: Upper air deflector installation
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09-04-2021, 01:17 PM | #23 | |
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Re: Upper air deflector installation
Quote:
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09-04-2021, 04:07 PM | #24 |
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Re: Upper air deflector installation
V8 Coopman
I had forgotten about that interchange a year ago. What you are describing seems to make sense. (at least it seems logical) I can see how the big hood on a 39 or 40 could allow recirculated engine compartment hot air to get in front of the radiator, and that aftermarket deflector could prevent it. |
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