Very true. Additive manufacturing or Extruding is more accurate as it is not a printer per se.

On 10/7/2023 at 10:46 AM, wheee! said:

I was also thinking of using an aluminum rod, threaded to fit the intake holes and sealed up then drilling and tapping new bolt holes in the intake to match the throttle body.

Thinking about it some more, I think this could work if you did it well. Some threaded aluminum rod screwed into the holes and loctited (red) in place. Then file flush and put in your new mounting holes. If you could cut the threads yourself on a lathe, you could make the threaded rod a tight class of thread fit which would make matters better.

The new holes will be split about 50/50 between the old bolt hole and virgin material. I think red threadlock would work, at least for a proof of concept. and once you get the throttle body installed, it's not like anything will be able to move anymore.

I'd give that a try over using a plastic 3D-printed adapter.

First test… some changes need to be made for the bolt sizing but a workable prototype! Final piece in CF infused ABS, and possibly another in CNC aluminum billet.

 

Working on the final version. New throttle body is amazing!

Proof of concept!