Thread: 1 7/8" OR 2" Headers
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  #18  
Old 01-17-2018, 07:22 PM
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taff2 taff2 is offline
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Join Date: Sep 2005
Location: South Wales in UK.
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2" od, so probably 1 -7/8" id. I believe I got the dimensions from the old Pipemax program/calculator. I ran 9.61@137mph consistently with that combo at around 2800lbs IIRC.

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