Quote:
Originally Posted by Badbubba
Yea, grinding down the weld to smooth the transition from the flange to the pipe is great. But, it appears that the pipe was also ground down as well in that area, especially the left one in the photo. This was possibly done because the pipe was slightly oval after bending, then filled in with weld between the round flange hole and the oval pipe. If you were closer, I could use an ultrasonic gauge to measure the thickness on the pipe. Hopefully, for your sake, very little material was removed on the pipe. A lot of thermal cycling will occur at the pipe and flange. If a too much was removed, or removed unevenly, there could be a potential for the metal to fatigue at a faster rate and crack. Maybe that's why the pipes have a thicker wall (as someone posted early in this thread), to allow material to be removed (lol). The color of the headers now look great on your car due to the heat cycles. Good luck with them and continue to call it as you see it.
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Thanks man. It's just a crappy cell phone picture, had I known I was gonna be under so much scrutiny I would taken better pictures. It wasn't ground down that much, they just smoothed out the welds.