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BoxxerSix BoxxerSix is offline
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Join Date: Jun 2006
Location: Ballston Spa, NY
Posts: 528
I know AMS produces some top quality parts but I'm not sure why they are stating back purging is one of "their" processes in welding their stainless headers. ALL performance stainless headers need back purging during the welding process to prevent the molten stainless on the back side of the weld joint from crystalizing in the open atmosphere which makes the joint extremely brittle after it has cooled and prone to cracking with thermal cycles.

All headers I build are backpurged. Been doing that for the past 15+ years. Nothing special really

Either way, be nice to see the final product for your car.
Adam Hennessy
Old 12-18-2007, 05:18 PM
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