So now that I have a metal lathe, I have a few ideas I want to play around with. One of them is a bored out thtottle body. Its a popular mod to have a stock jeep 4.0 TB bored out to 62mm to match the opening in the intake. But the cost of these bored TB's are crazy. Now that I can do it myself, I want to.
The actual boring of the TB will not be the hard part. The throttle plate will be. Has anyone ever made one? Most I have seen have had a ever so slight taper on each edge of the blade, I'm guessing to account for the blade setting a few degrees at a angle instead of perfectly flat. How would you even do that? Slow carefull work with a fine hand file I'm thinking?

Or does anyone know of a OEM throttle body with a 62mm plate I could find in a junkyard?