[Roger 911]

I have 30mm intake ports on my 2.4T heads. I am using Webers with manifolds that are 32mm at the head. I have E cams in the motor. It would seem that I should at least chamfer the intake port to remove the step from 32mm down to 30mm. I do not want to disassemble the engine and formally port the heads. However, I am thinking about removing the motor, putting it on an engine stand, turning it 90 deg, stuffing a plug deep into the intake ports, and grinding the edge out to match the manifold, maybe a 1/2" down. I can vacuum any shavings out, then remove the plugs. I appreciate that I won't have a 32mm port, since it will still reduce in diameter as it goes into the head. However, removing the step would still seem to provide improvements in airflow. Make sense?

Thanks.
Roger