Finishing the port and polish on the stock plenum, Which bits did you guys use to take off hte most, finish down the rough grooves, and then polish it up smooth?
For the big Lump in the back. Highspeed cutting bit the kinda squared off one.
Also used it to take out some other material, namely enlarge bore so a 75mm TB will clear, and start the radiusing of the round to oval area.
Found Flap wheels made quick work on material removal and left a decent finish but they eat up quick.
The Drum sander bits go kinda fast ( not as fast a flapwheel) and are mediocre at removing material used in the raidus from round to oval area mainly.
Used the Rubber polisihing bits to get the smooth finish I was after.
Now I found a tear shaped cutting bit for an air grinder and it made super quick work of everything. On the other one I did then I just went back with a dremel with a flapwheel and called it done.