Grafting Shelby GT Scoop on 1965 Ranchero Hood - Ford Muscle Forums : Ford Muscle Cars Tech Forum
 
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post #1 of 10 (permalink) Old 07-16-2007, 04:35 PM Thread Starter
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Grafting Shelby GT Scoop on 1965 Ranchero Hood

I wanted a hood scoop on the spare hood that I had for my 1965 Ranchero. I finally decided on a Shelby GT scoop. With detailed instructions from www.autobodystore.com forums written by Len Stuart, the owner of the site, I proceeded as follows.

Pictures read from left to right.

Picture 1
Take the scoop and place it in the desired position and draw its outline on the hood.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood1.jpg
Picture 2
For a functional scoop, cut the metal so that you have a couple of inches under the edge of the scoop.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood2.jpg
Picture 3
Drill some 1/8" holes in the scoop through to the hood about every inch and insert a screw to pull the scoop down. Doing this type of mounting on other areas of the vehicle and you may be able to clamp the panels together.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood3.jpg
Picture 4
After the holes are drilled and the screws are in place, remove the screws and the scoop. Grind the metal clean near the point of contact as well as the glass using a 16 or 24 grit disk.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood4.jpg
Picture 5
Apply your bonding material (I've been using Dyna-Weld) To both surfaces pushing the material into the scratches then build up a little on the surface and put the two pieces together and screw it down. DON'T screw it down tight because the Dyna-Weld is your glue and if you squeeze it all out your scoop will pop right off. Just pull the scoop down enough so that the paste starts to push out of the crack a little.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood5.jpg
Picture 6
Since the Dyna-Weld was a one-to-one mix ratio product, I felt it was best for me to get 2 matching caulking guns to use. A number strip also comes with the Dyna-Weld kit that you apply to the plunger handle of the caulking gun to get a more accurate dispensing of the materials.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood6.jpg
Picture 7
After the material gets hard remove the screws and grind off the excess bonding material and do some initial shaping with the grinder. Countersink the screw holes and cut a strip of fiberglass cloth about an inch wide to cover the seam all the way around the outside of the scoop.
Using more Dyna-Weld apply it to the edge filling the screw holes and giving you some buildup over the seam then push the fiberglass cloth into the soft paste so that it covers the seam and apply more DW on top while everything is still soft. You may need to do about a foot at a time because this could take long enough for the DW to start to harden. So cut the cloth strip into 1 foot lengths and do one at a time until you're all the way around and the cloth is buried in the DW and covering the seam.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood7.jpg
Picture 8
Once the DW is hardened over the cloth use the appropriate sanding block to shape the filler. Apply more of the filler (you can now use flexible polyester putty) and continue the shaping but try not to sand so much off that you sand through the cloth reinforcing strip. Here are some of the tools I used for the shaping and sanding of the material to create a smooth transition betweeen fiberglass and metal.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood8.jpg
Pictures 9, 10, and 11
The idea here is to use a flexible material (Dyna-Weld and flexible putty like Poly-Flex) so that the different expanding/contracting characteristics of the materials won't cause cracking.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood9.jpg Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood10.jpg Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood11.jpg
Pictures 12 and 13
When you have your shape sanded to where you're happy with 80 grit paper then go over it with some 180 and then spray it with some 2K primer using a flex additive so that the primer is also flexible. After guide coating and sanding the primer with some 400/600 grits sandpaper you can apply paint but be sure that the paint ALSO has flex additive added so that it won't crack. Pictured is the finished hood covered with Kirker Euro epoxy primer. I really like this primer and it is easy to sand when necessary.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood12.jpg Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood13.jpg
Picture 14
I deviated from the instructions above using materials I had on hand. The fillers I used were Evercoat's Rage Gold and UPC Icing. The picture below is the back side of the hood showing how I did not sacrifice the integrity of the original hood bracing. I'm hoping this will prevent the flexing issues that others have had. The color is the color that the Ranchero will be when finished. I hope my deviations from the original instructions won't come back to haunt me later.
Grafting Shelby GT Scoop on 1965 Ranchero Hood-hood14.jpg

Take Care
Earl - Ranchero_65 Restomod finished!!
http://www.ranchero65.com

Have you had your PSA Checked Lately ?

Last edited by 67stang; 07-26-2007 at 11:36 AM.
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post #2 of 10 (permalink) Old 07-17-2007, 04:33 PM
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Great work, scoop looks like it was made for it. Thanks

"Tell it like it is or don't tell it at all" 1964 Falcon 2dr HT, 347V8 4V, dual exhaust, 5sp, pwr assist R&P steering, AM radio, heater with defrost and 2sp fan, electric windshield wipers, cigar lighter, dlx light group, bucket seats, console and full carpet.
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post #3 of 10 (permalink) Old 07-17-2007, 08:21 PM
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Man that looks great!
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post #4 of 10 (permalink) Old 07-18-2007, 12:44 AM
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Good Job !
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post #5 of 10 (permalink) Old 07-18-2007, 03:12 AM
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Thumbs up Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Looks Nice!

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The above posted information is in my opinion only. It may contain copy and paste material(s). Your opinion(s) and mileage may vary.
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post #6 of 10 (permalink) Old 07-18-2007, 10:15 AM
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Do you have a seperate building you do body work in than where you do engine work? I want to be able to do more of this kind of stuff without turning my garage into one big dust bin.

Very nice work, BTW.
-J
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post #7 of 10 (permalink) Old 07-18-2007, 05:49 PM Thread Starter
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Thanks for the replies guys !
Jim, I only have one shop . Wish I had more but what I have now is better than what I have had in the past. Pic's of shop on my web sight.

Take Care
Earl - Ranchero_65 Restomod finished!!
http://www.ranchero65.com

Have you had your PSA Checked Lately ?
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post #8 of 10 (permalink) Old 07-23-2007, 06:03 AM
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Thumbs up Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Nice job!

Cobra Restorers, Ltd makes a stamped Aluminum hood scoop that might be eaiser to work with..
I also use (Fusor) Killer bonding!

Map

http://www.parts123.com/PartFrame.as...obra_Restorers

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Last edited by map351; 07-23-2007 at 06:27 AM.
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post #9 of 10 (permalink) Old 07-26-2007, 02:38 AM
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Very nice Earl...enjoy watching you work...

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post #10 of 10 (permalink) Old 07-15-2013, 03:27 PM Thread Starter
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Re: Grafting Shelby GT Scoop on 1965 Ranchero Hood

Well it's been a long time coming but I guess I need to update this .
I have finally got the hood painted so here it is......
(a little peel but not yet cut and buffed.)







Take Care
Earl - Ranchero_65 Restomod finished!!
http://www.ranchero65.com

Have you had your PSA Checked Lately ?
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