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Old Nov 14, 2002 | 02:29 PM
  #1  
dpoelstra's Avatar
dpoelstra
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From: Garden Grove USA
Header Installation

Two questions...
I want to go with 2 1/2 inch pipe. Is this measured as O.D. or I.D.?

Next, is there supposed to be a donut between the collector and the reducer? My reducer came with a gasket for the flange, but will the flanges from the collector and reducers even meet? Is it this compression that makes the seal?

I got the Hedman Elite ceramic coated headers for my '86 460.

Any other tricks or suggestions?

I guess this was more than two questions, but you know what I mean (I hope).

Thanks
 
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Old Nov 15, 2002 | 05:07 PM
  #2  
1984_355w's Avatar
1984_355w
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From: Illinois
Header Installation

All pipe on automotive that i've seen is o.d.
 
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Old Nov 16, 2002 | 05:10 PM
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88grandmarquis
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Header Installation

 
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