https://boneheadperformance.com/extrude-honing/extrude-hone-pricing/Years ago did not someone on moparts spend the $700-800 to Extrude Hone an iron exhaust manifold of some type?
I have pumped millions of tons of rock and clay through pipes which “hones out” the pipe at great expense. The wear is so great we would buy basalt rock lined straight pipe lengths, and buy from Georgia Iron Works “white iron” elbows.
Vast amount of sand, phosphate laden sand, and TiO2 laden clay is pumped in Florida and Georgia.
It always seemed to me that instead of the expensive Extrude Hone way, someone could just get permission to divert some of the mining “slurry” through parts that needed their insides smoothed out.
Sewage sludge is pumped most every city facility from large settling tanks to holding tanks.
It might also work but slower than mining slurry.
