What is the 'mandrel bent'?

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Old Apr 15, 2002 | 04:31 PM
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'89 hatch's Avatar
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Default What is the 'mandrel bent'?

what does it mean an exhaust is mandrel bent?
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Old Apr 15, 2002 | 04:39 PM
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Default Re: What is the 'mandrel bent'? ('89 hatch)

mandrel bent means that the inside diameter of the pipe doesn't change opposed to crush bent were the pipe is crimped, causing the inside diameter to be smaller in the bends.
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Old Apr 15, 2002 | 05:57 PM
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Default Re: What is the 'mandrel bent'? ('89 hatch)

here is a pic of a mandrel bent pipe:



here is a cool link that talks about the differences between crush bends and mandrel bends:
http://www.se-r.net/header_exhaust/m...rush_bends.htm

good luck,

aj
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Old Apr 15, 2002 | 06:01 PM
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Default Re: What is the 'mandrel bent'? (ajn)

then run a huge "ball bearing" through the pipe while bending to maintain equal pipe diameter throughout the bend.
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Old Apr 15, 2002 | 06:25 PM
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Default Re: What is the 'mandrel bent'? (dustin)

I am pretty sure they use a mandrel, not a ball bearing. It looks like a metal earthworm.

-Dustin
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Old Apr 15, 2002 | 06:27 PM
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Default Re: What is the 'mandrel bent'? (Autocratic_1st_Gen)

it's the idea at least...
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Old Apr 16, 2002 | 06:36 AM
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Default Re: What is the 'mandrel bent'? (Autocratic_1st_Gen)

It's not a ball bearing - you'd never get it out.
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