318 head porting for the average joe

Marcelo Dart BR said

Justin I need some clarifying since I don't know where to begin. I'll run the 2.02/1.60 valves that I already have. Should I cut the new seats before starting any porting or I can cut them later? My plan is to start polishing the chambers and then cut the seats, so I wont run the risk of scratch or damage them.

I ordered an electric grinder, some stones and a standard abrasives porting kit.

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Yes polish the chambers, cut the seats, then port.

Not even joking here, i use a harbor freight grinder and champion burs that I buy long and then cut the shanks down for what depth i need. I also have a speed control...but i just keep thumbing on and off with the switch.
I dont use cartridges on sand paper, I do it by hand with 80 grit and mainly on the exhaust side and to just check for surface consistency....otherwise i just finish with the bur.

Control the grinder, it's not gonna be nice if the bur bites digs in...and i have a couple L shaped shanks to prove it.lol