What is the exact definition of extrude honing and what does it do.

 

im pretty sure they push some thick through the manifold that polishs every corner. they also make a bit called a dingleberry bit. the bit can just be attached to a drill but i know when they push that shit through it gets kinda expensive.

 

so basically extrude honing smoothes out every nook and cranny of whatever it is that you are honing out. do you know what it might cost to do an intake manifold and where. preferably locally.

 

somebody correct me if im wrong but i think its somewhere in the neighborhood of 300 bucks.

 

not too sure but is that not what it would cost to have a head ported and polished.

 

it is an abrasive putty that is pushed through the ports/runners/whatever to remove material. The problem is it removes the material throughout and indiscriminately. When doing proper head porting you don't necessarily want to remove material everywhere and definitely not at the same proportions. My opinion is it is a bad idea in general.