I show that the 2.0 '95 ATX, '96 ATX, and '97+ ATX are all three different styles. I show the tour/stique 2.0 MTX TB's to all be interchangeable.
Swapping on a different TB would be possible, boring this one out enough to justify it would not be possible. While there is enough over all material to get it to a larger size, the throttle bar bearings are located rather close to the bore. That leaves not much room to work with for over boring it without going to extreems setting up new bar bearings.
The bolt pattern is similar to the 3.8 V6 Taurus TB, but the throttle bar goes through the bore 90 degrees differently than the Zetec tour one. The easiest way would be to make a 1 inch custom machined spacer ($$guessing at least $100$$) and use an SVT or other TB with custom cables. I could do it if I had a car here to play with for about a week or so.
The big thing to remember is that we're not increasing the over all flow area much at all. The bigest gains come from the increase in air speed through turbulence reduction through a TB the same size as stock.
Ya, D Davis, that lip was
HUGE! The little triangle shaped dip at the bottom of the TB was reduced to a little spec as well. I couldn't go much deeper into it without fear of getting to thin on material. The way it is now, it should be pretty good gains all around, from tip in, to full throttle high RPM.
