02-17-2010, 11:52 PM
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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
Quote:
Originally Posted by Gunner
It's also possible that the bolt is Grade 8, but I doubt that's why it broke. The nut or bolt on an AC can be tightened down until the AC is a crushed ruin before you reach anything like the kind of strain the fastener would need to break. There's a huge amount of rubbery compression ahead of that, from the air filter between the housing plates.
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8 bolts are extremly strong in tension. Yoy would strip out the threads in the carb long before you'de reach the tensil strength of the bolt.
I've made the mistake of using grade 8 bolts in places where they don't belong. Like the air cleaner. Or as part of a stand off. Over time the vibrations will cause the bolt to fracture due to lateral stress. Don't say it doesn't happen, I'v seen it/done it. Then you get a "light bulb" revelation. Switch to a 5 or all thread, and they never break.
Just one of little things I'v learned over the years.
Good decisions come from experiance. Experiance comes from bad decisions.
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