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Reattaching aprons
#1
Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls

Chasing Rust
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#2
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
I plan on plug welding to simulate the original spot welds, but you may want to take a look at what member Qcode351mach is doing with his restoration...




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1971 Mach 1 - 306cid/C4 Bright Yellow
"Just relax, I've got a friend named Felix who can fix anything!" ~James Bond
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#3
rocketfoot;10837 Wrote:
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
I plan on plug welding to simulate the original spot welds, but you may want to take a look at what member Qcode351mach is doing with his restoration...

X2, Scott is your man... there´s also a guy i believe his Austrian, another member here.. Sorry i dont remember his username... i´m new here too!!... anyway, i saw what he did to his 69 Mach1 and 71 Convertible and he´s another great restorer...
And we all going to try to tell you what we think! you´re gonna have all the assistance you need Wink


You may also wanna add some pics of the work you´re doing, sometimes that make us realice some other tweak you may also need...



Damián Cool

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#4
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
D, Your correct..try & match the same distance between spot welds the same as what you drilled out..KEY MOST IMPORTANT !! make sure the area under the overlap is clean you can sand with 80 grit on the d.a. Then apply WELD THROUGH PRIMER...Look at my video to see what happens when you don't.
http://www.youtube.com/watch?v=FKyu3MWuPR8

rocketfoot;10837 Wrote:
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
I plan on plug welding to simulate the original spot welds, but you may want to take a look at what member Qcode351mach is doing with his restoration...
B..The only thing that simulates original spot welds is a "resistance welder" I had one in my shop pretty pricey piece of equip.


LOVE OF BEAUTY IS TASTE..THE CREATION OF BEAUTY IS ART
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#5
Qcode351mach;10851 Wrote:
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
D, Your correct..try & match the same distance between spot welds the same as what you drilled out..KEY MOST IMPORTANT !! make sure the area under the overlap is clean you can sand with 80 grit on the d.a. Then apply WELD THROUGH PRIMER...Look at my video to see what happens when you don't.
http://www.youtube.com/watch?v=FKyu3MWuPR8

rocketfoot;10837 Wrote:
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
I plan on plug welding to simulate the original spot welds, but you may want to take a look at what member Qcode351mach is doing with his restoration...
B..The only thing that simulates original spot welds is a "resistance welder" I had one in my shop pretty pricey piece of equip.

So if I understand this correctly, I should be prepared, after welding back on, to treat the welded areas with weld primer? Is this correct? Can you buy this stuff anywhere or is it a specialty item?Does it also make sense to drill out holes in the new aprons to weld back on? Thanks for the help
Darren 72;10875 Wrote:
Qcode351mach;10851 Wrote:
Darren 72;10830 Wrote:Hey Guys,

I am removing the aprons on my 72 in the engine bay. I have the new aprons. What is the common practice for reattaching. I'm thinking that you would have to drill holes in the new aprons and spot weld back like the originals? Can someone chime in please.

Thanks.
D. Rolls
D, Your correct..try & match the same distance between spot welds the same as what you drilled out..KEY MOST IMPORTANT !! make sure the area under the overlap is clean you can sand with 80 grit on the d.a. Then apply WELD THROUGH PRIMER...Look at my video to see what happens when you don't.
http://www.youtube.com/watch?v=FKyu3MWuPR8

rocketfoot;10837 Wrote:I plan on plug welding to simulate the original spot welds, but you may want to take a look at what member Qcode351mach is doing with his restoration...
B..The only thing that simulates original spot welds is a "resistance welder" I had one in my shop pretty pricey piece of equip.

So if I understand this correctly, I should be prepared, after welding back on, to treat the welded areas with weld primer? Is this correct? Can you buy this stuff anywhere or is it a specialty item?Does it also make sense to drill out holes in the new aprons to weld back on? Thanks for the help

Never mind about the last question. I just re-read your post. I will plan on matching the existing spot weld holes and tack on.

Chasing Rust
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#6
[/quote]

So if I understand this correctly, I should be prepared, after welding back on, to treat the welded areas with weld primer? Is this correct? Can you buy this stuff anywhere or is it a specialty item?Does it also make sense to drill out holes in the new aprons to weld back on? Thanks for the help
[/quote]
Wrong..BEFORE you weld on sand the shock tower edge where the apron goes..THEN spray weld through primer on that edge..Then put apron on..Weld thru goes on the side you will be welding to...Yes YOU MUST drill holes on the new apron piece FIRST before attaching..Think of the weld thru as the meat in a sandwich.
Most welding or autobody supply shops carry it...
weld thru primer


LOVE OF BEAUTY IS TASTE..THE CREATION OF BEAUTY IS ART
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