Shops capable of welding titanium...?

[KillerBlackbird]

@Boxersix

Lol, that’s a good one. The flat surface of the resonator/muffler there has been heat cycled in a non uniform manner. any time a flat panel of any metal is under those condition and then heated again the panel grows at different rates across it’s surface. that’s the non-tech explanation. The joints material did not expand as much as the flat panel and it cracked, but due to the material having different hardness across its surface the force had cracks propogate during every heat cycle. A good backfire can easily cause this as well.

There’s really only one way to properly fix that pictured issue there and that’s to replace the muffler or resonator. repairing that would just have issue down the road.

Likely the material used in sheet form was 6al4v, a grade 5 TI. not the best choice for this. Grade 2 or 4 would have been a better choice, more pure of a titanium and much better for welding. 6al4v has excellent thermal properties but must be done some uniformly as is better suiting to tubing or machined parts like flanges and couplings… Grade 4 is more forgiving. when it’s all said and done, normalizing the entire can is almost a must.

Reading this makes me so happy I didn’t drop $3K on a titanium exhaust lol.