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07-03-2009, 05:12 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
According to the Kirkham website, the aluminum used for the Kirkham is thicker than the originals (0.059" versus 0.050"):
http://www.kirkhammotorsports.com/faq/index.html#024
Honestly, it's always a concern, and anything that's a projectile from the freeway will damage virtually any car. Fiberglass is not without its own concerns as well.
I had an large empty cardboard box come off a truck that I was following on the freeway, some time ago. It bounced and hit my daily driver and it made a small indentation.
If the unfortunate does ever happen, then aluminum can be fixed just like metal or plastic.
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07-03-2009, 06:01 PM
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Full Blown Member
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Join Date: Sep 2008
Cobra Make, Engine: KMP 427 S/C, Twin Paxton 511 FE
Posts: 2,594
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Not Ranked
Well, I thought it was an honest question.
Thanks for the input, guys.
BTW, my mom's XJR is plastic front and rear. I assume the Audi and Range Rovers are the same.
I could live with the reality of an aluminum car, I was just curious.
Rodney
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07-03-2009, 06:19 PM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302 Street), HTM111 (427 Comp), CSX2375R (289 Comp) and COB5999 (427 S/C)
Posts: 19,111
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Not Ranked
Not only is it thicker it is alloyed differently making it harder. They are very durable as I think they are stamped versus rolled as well.
KMS person may know for sure. 
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07-03-2009, 06:26 PM
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CC Member
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Join Date: Feb 2001
Location: St. Louis, Missouri,
MO
Cobra Make, Engine: SPO 2715
Posts: 1,648
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Not Ranked
Quote:
Originally Posted by rodneym
Well, I thought it was an honest question.
Thanks for the input, guys.
BTW, my mom's XJR is plastic front and rear. I assume the Audi and Range Rovers are the same.
I could live with the reality of an aluminum car, I was just curious.
Rodney
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Jamo is pulling your chain.
E 
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07-03-2009, 07:04 PM
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Senior Club Cobra Member
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Join Date: Jul 2001
Location: Galion,
OH
Cobra Make, Engine: Kirkham 427FE (sold & missed)
Posts: 1,320
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Not Ranked
I found the Kirkham to be very durable..........how ya doing Eric??
__________________
Brian Newell - Superformance Sales
Mansfield Motor Group
www.mmgauto.com
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07-03-2009, 07:14 PM
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CC Member
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Join Date: Feb 2001
Location: St. Louis, Missouri,
MO
Cobra Make, Engine: SPO 2715
Posts: 1,648
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Not Ranked
Quote:
Originally Posted by bnewell
I found the Kirkham to be very durable..........how ya doing Eric??
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I'm doin great!
Was just over at the LCS, were you there?
Sorry for the thread theft OP
E
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07-03-2009, 07:22 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
The Dirty Little Secret of Aluminum
But what they don't tell you is that repeated removal of the pesky oxidation will eventually result in holes in the aluminum. 
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07-03-2009, 07:36 PM
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Full Blown Member
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Join Date: Sep 2008
Cobra Make, Engine: KMP 427 S/C, Twin Paxton 511 FE
Posts: 2,594
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Not Ranked
Sniffing plastic is right, Jamo. I'm in vinyl fabrication business: chemical suits, medical bladders, etc. Smelling a warehouse of vinyl in full bloom will kill some brain cells.
Thanks a lot, Patrickt. Now I have something else to worry about with Aluminum. Just pulling your chain, Jamo.
Rodney
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07-03-2009, 07:42 PM
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Senior Club Cobra Member
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Join Date: Aug 2004
Location: Ferndale,
WA
Cobra Make, Engine: SPF2089
Posts: 460
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Not Ranked
Isn't Windex an aluminum solvent. After 6-7 years the aluminum just dissolves.
Much like some mail boxes.
__________________
dblbarrel
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07-03-2009, 08:06 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Damage from Windex
Quote:
Originally Posted by dblbarrel
Isn't Windex an aluminum solvent. After 6-7 years the aluminum just dissolves.
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Yes indeed. Here's a close-up of some yellow aluminum that was repeatedly exposed to Windex.

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07-03-2009, 09:46 PM
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Senior Club Cobra Member
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Join Date: Feb 2007
Cobra Make, Engine: KMP 539, a Ton of Aluminum
Posts: 9,592
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Not Ranked
Quote:
Originally Posted by dblbarrel
Isn't Windex an aluminum solvent. After 6-7 years the aluminum just dissolves.
Much like some mail boxes.
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I just went into my garage to check for holes in the aluminum and I found that there's both a large as well as a smaller hole in the front end of the car. Is that bad? 
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07-03-2009, 07:16 PM
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CC Member
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Join Date: Feb 2008
Location: Jacksonville,
FL
Cobra Make, Engine: Kirkham #570 w Shelby FE
Posts: 1,009
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Not Ranked
The big difference is really painted or not painted..
Paint jobs are destined to look like crap over time doesn't matter what it's on.
An unpainted aluminum body on the other hand...
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