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SHOCK TOWER CAPS

Started by shelbymann1970, December 12, 2021, 10:48:39 AM

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shelbymann1970

Here is something weird. While blasting these caps this was the end result. The caps are pretty nice but have what appears to be copper on them. At first I thought it was bondo but when I filed it it was metal. The areas on the one cap where I filed it is misleading as it looks white but it isn't. Any thoughts?  Gary
Shelby owner since 1984
SAAC member since 1990
1970 GT350 4 speed(owned since 1985).
  MCA gold 2003(not anymore)
1969 Mach1 428SCJ 4 speed R-code (owned since 2013)
"2nd" owner of 68 GT500 #1626

Bob Gaines

Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

shelbymann1970

#2
Quote from: Bob Gaines on December 12, 2021, 11:29:41 AM
Washers are brazed on.
so someone got messy with the brazing?  Also they are in bare metal and those welded areas are definitely welding rod and not brazing rod.
Shelby owner since 1984
SAAC member since 1990
1970 GT350 4 speed(owned since 1985).
  MCA gold 2003(not anymore)
1969 Mach1 428SCJ 4 speed R-code (owned since 2013)
"2nd" owner of 68 GT500 #1626

Bob Gaines

They are not typicall brazed but I have seen a mess like that before on various years of what appear as unmolested cars.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

shelbymann1970

Quote from: Bob Gaines on December 12, 2021, 11:47:08 AM
They are not typicall brazed but I have seen a mess like that before on various years of what appear as unmolested cars.
Thanks. I do not know if the paint I blasted off was original on these caps but they are really nice sans the braze rod mess. Gary
Shelby owner since 1984
SAAC member since 1990
1970 GT350 4 speed(owned since 1985).
  MCA gold 2003(not anymore)
1969 Mach1 428SCJ 4 speed R-code (owned since 2013)
"2nd" owner of 68 GT500 #1626

shelbydoug

I too have seen them both was, brazed and welded. Welded seems to be more common.
68 GT350 Lives Matter!

98SVT - was 06GT

Those look welded. The filler is the same color as the welding not gold as brass would be. I wonder if they had been chrome plated at one time which would account for the copper in the odd areas.
Previous owner 6S843 - GT350H & 68 GT500 Convert #135.
Mine: GT1 Mustang, 1998 SVT 32V, 1929 Model A Coupe, Wife's: 2004 Tbird
Member since 1975 - priceless

Coralsnake

Not weird or unusual. I have seen it on a dozen 1968s, I have restored over the years. I cant tell you the process, but since the caps get painted its not a big concern.
The original Influencer, check out www.thecoralsnake.com

J_Speegle

Wonder if this is more of a 68 thing and possibly a different supplier since those were installed on the other side of the country
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and Judge

TLea

It's called oven brazing gents

shelbymann1970

Thanks guys as I never saw that on my 70 caps for the 2 70s I had owned or my 68. When repainted they came out great. A nice set and they are pit free.
Shelby owner since 1984
SAAC member since 1990
1970 GT350 4 speed(owned since 1985).
  MCA gold 2003(not anymore)
1969 Mach1 428SCJ 4 speed R-code (owned since 2013)
"2nd" owner of 68 GT500 #1626

shelbydoug

Is there a reason to braze them rather then weld?
68 GT350 Lives Matter!

pbf777

#12
Quote from: TLea on December 12, 2021, 11:11:35 PM
It's called oven brazing gents


    In 'welding', this is the process whereby the parent materials are melted, and as witnessed in this case (but not always required) welding wire stock is added to the liquefied pool, forming a melded structure.

    In 'brazing', this is of a lesser heat involved process where the parent material is not intended to be liquefied but rather bonded with the use of particular "brazing-rod' materials.  Also one often will witness this brazing material about the periphery of the seam of the joined units, which here I don't see (maybe a better photo would aid in this observation) as I would expect, but?

    In the case of the pictured, I feel confident in saying there is a welding process presented, but is one saying that then, post welding, perhaps deemed insufficient, these assemblies incurred a further brazing effort; surly seems terribly in efficient?   :-\

    Scott.

   

KR Convertible

This is just a guess.  Is it possible that the threaded pieces were oven brazed.  The washers look welded.

Bob Gaines

Something to keep in mind is that the vast majority of the shelby shock tower caps do not so evidence of the brazing. My guess is that it was a fix for caps that didn't pass inspection for proper welding.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby