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90 NA header pipe flange size???

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New member
Joined
Sep 19, 2014
Location
Charlotte NC
Looking to make a new exhaust and want it to bolt on to the header pipe.
So I can swap exhausts, if need be, can?t find and at the local pull a part as they Debo the cats and flanges before they hit the yard

Thanks for any info or links.
 
I used an adapter from O’Reilly. Then I ended up welding it. I don’t remember what size I used. What fuel system do you have? May need a o2 bung if your o2 is in the converter
 
It?s a lh2.4 car, I run an lh 2.2 exhaust manifold that has the 02 located in the back side of it.
So you found a 3 bolt flange that worked at the oriellys? Well I guss I just need to pull it apart and measure
 
No I just cut the three bolt flange and used band clamps to attach the adapter. I’m also running an A cam. I like the sound and have had complements from people on it. I’m running the maximizer system. Very pleased with it. If you need help installing it you can pm me.
 
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