What bit for die grinder for TB porting?
I woult think you may want to use a abrasive roll or something along those lines.. Not really sure about a carbide cutter on diecast or a nice pretty billet piece it may take longer buts easer to fix if you get in trouble esp if its your first time
Sanding roll kit from Standard Abrasives (or the no-name Summit or Jegs abrasives kit) will work just fine. Dip the sanding roll in a little transmission fluid to provide some lubrication and grind away. It'll do a nice job. 
I've also purchased cutting bits from Summit, they clear away material really quickly. They work well on aluminum, but steel can be a bit dangerous with cuttings (aka splinters).
I've also purchased cutting bits from Summit, they clear away material really quickly. They work well on aluminum, but steel can be a bit dangerous with cuttings (aka splinters).
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Thread Starter
Joined: Sep 2004
Posts: 4,085
Likes: 77
From: Fort Myers Florida
yes its a stock TB..i think i used like a 120 grit roll for the dremel, but yes i know it has no *****..thats what the die grinder is for!
By abrasive roll you mean like the kit from jegs/summit or can i buy just that somewhere??
By abrasive roll you mean like the kit from jegs/summit or can i buy just that somewhere??
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Verdad Gallardo I highly recommend the whole sanding roll abrasives kit. You'll use it for more than just the TB, I promise. I think it's under $40... There are tons of things you will use it for, and it basically lasts for years. It's a good investment. I'm still on my first kit, and have used it a lot.
I think it's under $40... There are tons of things you will use it for, and it basically lasts for years. It's a good investment. I'm still on my first kit, and have used it a lot. 
TECH Fanatic
Joined: Jun 2006
Posts: 1,285
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From: Elgin, Il
Carbide and steel burrs are great. If your using stones make sure you soak them in oil or kerosene, they get clogged fast - especially if your grinding on aluminum.
For a finish I'll be making my own sanding rolls. For finishing them off, anything in the intake up to the fuel injectors should be as close to a mirror finish as possible.
For a finish I'll be making my own sanding rolls. For finishing them off, anything in the intake up to the fuel injectors should be as close to a mirror finish as possible.
a helical carbide cutter would work great just be careful they take of a lot in no time especially cast metal and then go back and finish with a sand paper roll and then some good old fashioned hand sanding to smooth out the surface theres many ways to do it thats just my way.
