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help with exhausts 

 

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 Post subject: help with exhausts
Posted: Wed Feb 22, 2006 12:41 pm 
Getting Side Ways
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Sorry for the dumbness of the question but what is the difference between mandrel and press bent systems??????
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Posted: Wed Feb 22, 2006 12:47 pm 
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In short, press bend = bad. Mandrel = good.. :D
Press bends actually 'press' the pipe to make the bend, as the name implies.
This crushes the pipe slightly, reducing the internal diameter.
It's theorised that a 2.5" press bend, flows similar to a 2" mandrel bend.
Mandrel bending I'm not sure on the actual process, but it keeps the same internal diameter through the bend.
Smoother bends = less restriction = more flow!!

 

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Posted: Wed Feb 22, 2006 1:00 pm 
Getting Side Ways
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thanks buddy :D
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