Originally Posted by Carcrazygts2
I would go with aluminum. Steel is going to hold in too much heat and watch IATs go through the roof. Even with the cooler setup..
I don't have access to a tig all the time, so I will probably do a steel hat with the inside shaded with 22-26 gauge aluminum plating. The outer still should hold the pressure find, the 22 gauge aluminum will just be for not holding heat like the seteel. Might just get it ceramic coated on the inside and call it a day.
I don't want to weld to the midplate, and I dont want to go with 3/8 alum (too expensive) since I am bolting it to the midplate with a gasket. This is why I am going with mild steel.