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Old 05-17-2016, 09:36 PM   #1
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Bent Collector Flange

Hello all,
I'm pretty new to exhaust systems, but I just had to buy a replacement set of BBK shorty headers, and one of the collector flanges was bent. If I didn't need the car the next day I wouldn't have put them on. Does this look normal? Could this cause a small leak? I'm getting a small puffing sound..
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Old 05-17-2016, 09:53 PM   #2
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Typically that donut style gasket will prevent leaks, but that bend looks like it goes all the way to the "flare" of the donut... i'd say that very well could be posing an exhaust leak, as well as maybe some adverse (hard to say how much exactly) affects on performance.
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Old 05-17-2016, 10:15 PM   #3
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I had that on my BBK Long Tubes. Easy to bend back in to shape.
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Old 05-17-2016, 10:19 PM   #4
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Thanks for the quick replies, and you mentioned a gasket Volt? There aren't any gaskets there, it's just the ball and socket joint (from my understanding, could very well be wrong). I just got these from American Muscle, I'd rather try and get a replacement set than attempt to bend them back if possible.
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Old 05-18-2016, 06:16 AM   #5
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Take it apart, put a bead of ultra copper rtv up by the flange then reassemble. Let sit an hour or so before firing it up.
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Old 05-18-2016, 08:32 AM   #6
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Quote:
Originally Posted by rgstelzner View Post
Thanks for the quick replies, and you mentioned a gasket Volt? There aren't any gaskets there, it's just the ball and socket joint (from my understanding, could very well be wrong). I just got these from American Muscle, I'd rather try and get a replacement set than attempt to bend them back if possible.
Sorry, that ball and socket joint is also referred to as a donut gasket if i'm not mistaken. That's what i was referring to.
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Old 05-19-2016, 06:04 AM   #7
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My BBK long tubes came a little bent like yours. Took a large pair of vise grips and reshaped it. I think this happen often
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Old 05-24-2016, 09:05 PM   #8
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I spoke with americanmuslce and got a replacement set. Is it possible to overtighten the bolts from the collector flange to the X pipe with hand tools? I've had issues with them leaking there before, and cannot get a torque wrench in there to check exact torque on the bolts
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Old 05-25-2016, 07:47 AM   #9
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I sanded to clean up everything. Didn't have anything leak. I didn't use a torque wrench. Just like anything else, you can break a bolt if you get it too tight
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