In our shop recently: We put our vertical mill to good use porting a Skunk2 K Series intake manifold for a 74mm throttle body. This manifold is headed for install on a K24/K20, with dyno tuning shortly afterwards.
Our customer Jason S. asked, "Can't this be done on a flap wheel?" The answer is that it is difficult to get the precision to open up the throttle body exactly 4mm with a flapper wheel. We're all about precision!
We are also porting the intake runners.
Here is a close up of the before (right side) and after (left side).
Call or email us to talk about your porting job!
Skunk2 Intake Manifolds