Originally Posted by michaeltayar
Other than the water
the rest of the exhaust piping is usually threaded black iron pipe, mainly for order of sacrificial metals reasons. You want the pipe to rust before the expensive fittings, like the water
, although many people make their own injection elbows your usually better to to use the original cast ones, they cost more but last longer.
The "insulation" is usually high temp header wrap, you can find it at any auto performance store or online from one of the car performance suppliers.
Does the rubber hose portion of the exhaust slip on to the end of a pieces of pipe or did they do it correctly and use a hose barb fitting?