08-13-2011, 08:00 AM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,455
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Not Ranked
A grade 8 is extremly strong in tension, and can hold a lot of clamping force. But, that strength comes at a price. IIRC, that bolt is in single shear. Failure is inevitable.
In Carroll Smith's book "Nuts, Bolts, Fastner, and Plumbing Handbook", he states, "There is no place on a race car for a grade 8 bolt". I don't agree with that. But, I do believe there are very few places for a grade 8.
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.boB "Iron Man"
NASA Rocky Mountain TTU #42
www.RacingtheExocet.com
BDR #1642 - Supercharged Coyote, 6 speed Auto
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