Quote:
Originally Posted by geno
Sense the tubes are tig welded to the header flanges on the the outside you can port match the inside of flanges to your ports..  Unlike a stock header thats welded on the inside and you have to weld around the outside of the tubes so you can remove material on the inside were its welded |
If you look at your set, the tubes go right through the flange and are flush with the flange mounting surface. If you port there you'll be grinding away at the tube first, then into the flange. You'd create thin spots in the tubing right at the edge which would break off eventually and go through the turbo. Not good.