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Old 03-12-2007, 09:25 AM   #19
Ru fan
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Member#: 1605
Join Date: Jun 2000
Chapter/Region: NESIC
Location: Middletown, CT USA
Vehicle:
1997 1.8L Brighton
NESIC TrackH0z member#1

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When we are looking into PnP work, should we gasket match or port match the headers to the heads? Second, should we port the "exit" of each section? IE, should we port the passenger side header around the area of the O2 sensor? Wouldn't this just be increasing the volume of the pipe and thus hurt spool? I would think that each of the exhaust pieces should be port matched where the exhaust enters and remove any casting marks. All these PnP jobs that gasket match every bit of pipe would seem to be harming spool/exhaust speed, with SOME of the porting they are doing on their headers.

Seth E.
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