Quote:
Originally Posted by badmatt
Hmm surprised they didnt do a fusion "root" pass then a cap..
/weld inspection theory.
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Stainless shrinks a bunch when you weld it. If you pass multiple welds on the same seam the area will be lower. If you are trying to remove the weld and polish then there will be low areas where you welded. IMHO smoothed out stainless exhaust is for show cars that won't be driven much. It's expensive to build and has poor longevity. Leave the welds on stainless exhaust if you plan on driving it. Be sure to back purge the tubing or use a weld flux to prevent sugaring.