now knowing that the rotary engine produces a lot of heat i was wondering what kind of steel piping besides stainless would be adequate to make my own header. i have the required things needed to make the header but need to know what would be a good grade steel for the job. a lot cheaper than going out and buying one if i can just make one from scratch.

 

321SS

Although coated mild steel will work just fine in my experience..

 

alright sweet. ill see what i can get from the metal shop here in town. and just four bolts to remove it? nice. and easy