Shannon Boal
Platinum Level Sponsor
I have added a "ported" vacuum source to a carb that had none by drilling in the manner you propose. Used a piece of 3/16" brake line, drilled for an interference fit of maybe 0.0008", drove it in with a tiny ball pein hammer. It worked fine....
[However, I've decided that the homemade vacuum port would be easy (even if wrong) and easily remedied with a dab of JB, so it will probably be at the head of the list of possible actions to take.]
[However, I've decided that the homemade vacuum port would be easy (even if wrong) and easily remedied with a dab of JB, so it will probably be at the head of the list of possible actions to take.]