Quote:
Originally Posted by dannichols1474
More talk.
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Hmm sorry thought a pictured attached but it didn't hold tight. in the meantime here is a good read.. I can guarantee you as prove the 1-3/4" is to big and 1.625 will be borderline too much and 1.5 would be just right but again as the former owner of M&K exhaust and my aerospace work previous I am not just some dummy spewing ideas from my couch. I interreacted with hundreds of dyno shops and end users over the years. I would encourage you to call Marty and MSDS and see what he says. That is one of the last still USA made Porsche header fabricators amongst many other automobiles. He owns #40 914-6GT that was raced in Le Mans and has many other wild cars. Call Supertec. Talk to Henry and he will tell you the same. Call Brian at M&K/Rarlyl8 he will tell you the same.
https://forums.pelicanparts.com/911-engine-rebuilding-forum/487943-sneak-peek-new-stainless-steel-headers.html