I have a few sets of venturis for my Dual Weber 40 idfs. All of the vents are the same size. I was planning on boring a set of the 32mm vents to 34mm and a set to 36mm (long story why I am doing this).
My question. Is there anything special that I must do other than bore out the opening to the desired size. Do I need to shape anything or do I just simply bore it out.
I planned on doing this on a metal lathe. Obviously it would be much easier to just bore it out. If I have to shape the vents, I will just send them off.
Thanks