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06-16-2010, 09:58 AM
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CC Member
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Join Date: Jan 2008
Location: Lodi,
CA
Cobra Make, Engine: ERA #773, 482 stroker, cross ram stack injection
Posts: 95
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Not Ranked
Aluminum or Stainless Steel Knock-off's
For street use, is there any preference between aluminum and stainless steel knock-off's? Aluminum knock-off's reduce unsprung weight, stainless steel doesn't have the same amount of thermal expansion, etc. I can see advantages to both.
Any safety issues with aluminum?
__________________
Drink no wine before its time
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06-16-2010, 10:46 AM
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CC Member
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Join Date: Jan 2003
Location: Atlanta,
GA
Cobra Make, Engine: CAV GT40 with 331 KC
Posts: 2,187
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Not Ranked
Aluminum ones are not as strong, obviously, and may therefore not survive your efforts to remove a knock off that is stuck on to the car.
If you lubricate properly and remove them somewhat regularly they are fine.
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06-16-2010, 11:15 AM
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CC Member
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Join Date: Apr 2004
Location: Hyannis,
MA
Cobra Make, Engine: ERA FIA #2039
Posts: 255
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Not Ranked
Knock Off's
Aluminum to aluminum is prone to sieze, ask me how I know!
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06-16-2010, 03:03 PM
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Senior Club Cobra Member
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Join Date: Dec 2000
Location: Chandler,
AZ
Cobra Make, Engine: 396W Kirkham KMPS036
Posts: 240
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Not Ranked
Switched mine to Stainless to eliminate the galling issue.
__________________
Bob McLinden
ERA FIA 2080 SOLD
Kirkham KMPS036
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06-16-2010, 07:25 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: 19,007
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Not Ranked
Two cars and two sets of unpolished SS.. A-1
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06-17-2010, 02:45 PM
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Club Cobra Member
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Join Date: Nov 1999
Location: Salem,,
NJ
Cobra Make, Engine: ERA 289 FIA #2100 Rio Red Wimbledon White Stripes 302 stroked to 331 Webers Richmond Road Race 5 speed
Posts: 782
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Not Ranked
Polished stainless, No problems with removal.
__________________
 Snakebit
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06-17-2010, 03:08 PM
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Senior Club Cobra Member
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Join Date: Feb 2005
Posts: 651
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Not Ranked
And I've beat the dickens out of mine a few times over the years with a 3 lb. brass hammer.  No bent ears, dings, nicks and such. |
04-28-2011, 01:16 PM
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CC Member
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Join Date: Mar 2011
Location: WAPPINGERS FALLS,
NY
Cobra Make, Engine: SUPERFORMANCE,427 SMALL BLOCK WINDSOR STROKER MOTOR
Posts: 44
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Not Ranked
Who's the best aluminum polisher out there,(for wheels,intakes,etc.)?
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04-28-2011, 01:23 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
If you go with aluminum get the forged rather than cast ones, best of both worlds.
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04-28-2011, 02:08 PM
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CC Member
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Join Date: Apr 2006
Location: Charlottesville,
va
Cobra Make, Engine: Coombe, Shelby Block 496
Posts: 1,187
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Not Ranked
Just the fact you beat on them go Stainless, I have seen a few bent alloy ones.
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04-28-2011, 03:56 PM
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CC Member
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Join Date: Jan 2003
Cobra Make, Engine: Once Owned CSX4803, CSX803 block, Keith Craft 468, Suspension by Tom Barnard, Built by Kris Kincaid
Posts: 161
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Not Ranked
Stainless is the way to go!
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Bluedog
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04-28-2011, 04:15 PM
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CC Member
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Join Date: Aug 2009
Location: Adelaide,
SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,151
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Not Ranked
Quote:
Originally Posted by Robert McLinden
Switched mine to Stainless to eliminate the galling issue.
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I agree wholeheartedly. Aluminium on aluminium and you can just about guarantee you will get galling at some stage.
Cheers,
Glen |
04-28-2011, 07:10 PM
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Senior Club Cobra Member
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Join Date: Apr 2007
Location: ione,
ca
Cobra Make, Engine: SPF #1473 392 cu.in. titanium/black stripes
Posts: 945
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Not Ranked
I finally got fed up worrying about the aluminum ones breaking and just got a set of stainless steel knockoffs from Cobra Racing in Torrance. Double advantage... look great and don't break.
__________________
"Outside of a dog, a book is man's best friend. Inside a dog it's too dark to read."
Groucho Marx
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