diameter of hole size on header flanges??? please help
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Joined: Jul 2003
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From: Houston, Tx., USA
diameter of hole size on header flanges??? please help
Was wondering what the standard hole size (the runners) wierracing, bmcrace, and explotiedracing are making on the d-series head flanges? Please let me know someone has to know. Is it 1 1/2 inch or bigger?
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Joined: Oct 2003
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From: Houston, Texas, USA
Re: diameter of hole size on header flanges??? please help (fastcivicboy)
hey nick, I use 1.5" 304 schedule 10 from mcmaster.com. If squashed properly on a b series flange the pipe matches up perfectly, on a d series flange the pipe is bigger.
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