Thread: How do you measure the size of the collector on a header?
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Old May 7, 2003 | 09:07 AM
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Integrity
Some have it, some don't
 
Joined: Mar 2002
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From: RavensTown, Maryland
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Originally posted by aut0tek
It's pi times the length of the runner off cylinder number 3, divided by 2.

LMAO How thick is your pipe there homeboy? u got 1/2" thick steel header or what? It shouldn't be thick enough to where when u measure a 2.25" pipe ID it's not gonna be 3.25" OD.
This "homeboy" got his hands onto an almost new DC 4-1 header for next to nothing. It's ID is only 2" and it's OD is 2.25"
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