Exhaust manifold restore

I tried the Bill Hersh last night on a Durango manifold (2 1/8" outlet). Did it with a foam brush and it looks really good. I am going to fire up the barbeque and cook it for an hour at 400 degrees and see how it looks.

I did order some Por-15 Factory Manifold Gray and I will try that on the original 273 manifolds for comparison.

I blasted the manifolds clean with #70 aluminum dioxide.





A little shiny now but I am sure they will die down a bit after I cook it.