Titanium Headers

You would have the benefit of replacing them about every 1000 miles if you run the car hard.

Titanium is NOT the material for high quality headers (321 or 347 Stainless is the ticket until you can afford Inconel.)

 

Inconel

 

Titanium would be a big mistake for f355 engine there is a reason why you don't here too many people making them even for the mufflers they don't last as long. Like Mitch Alsup said unless you don't mind replacing often Inconel is the way to go but $$$$$$$$$$$$$ 321 would be next and so on.

 

Agree 100%.

 

I have a titanium catback exhaust on my Subaru STi...ultra light weight, very thin wall thickness since there's no need for corrosion allowance. Mine broke at a bend just from vibration / heat, maybe 1000 miles, 4 months (with a few long autocross days in there as well). Definitely not suitable for headers...

 

Hope my titanium hip replacement does not fail from the heat and vibration cycles

 

Titanium for the tips are fine, for the pipes out of the muffler are fine, these see no more than 700ºF, whereas the Header primaries see 1200ºF+ (skin temps), and the secondaries see 1000ºF+. The mufflers may see in the 800ºF if you run the crap out of the car for more than 15 minutes without letting off.

 

Yep, otherwise 321 SS, then 304 as a last option