12:05 Garage- ’70 Duster build
Here is what my completed intake port looks like. To get to this finish, I used a carbide bit to take out the big stuff and knock down the rough casting, followed up with an 80 grit cartridge roll, then 120 grit to get the carbide bit marks out. Finally, I found some scotchbrite type "balls" in 4 grits. I used all 4 in order to get the smooth finish. I'm happy with it. I have all the intake ports and pockets done on one head and the exhaust ports are hogged out, but not sanded yet. It really doesn't take long to get this done. Thankfully the head design leads itself to lots of room in the ports to work.
Here is what my completed intake port looks like. To get to this finish, I used a carbide bit to take out the big stuff and knock down the rough casting, followed up with an 80 grit cartridge roll, then 120 grit to get the carbide bit marks out. Finally, I found some scotchbrite type "balls" in 4 grits. I used all 4 in order to get the smooth finish. I'm happy with it. I have all the intake ports and pockets done on one head and the exhaust ports are hogged out, but not sanded yet. It really doesn't take long to get this done. Thankfully the head design leads itself to lots of room in the ports to work.