Hey Jim ! You there
I mentioned above that the original needle valve on the 3.0 GTV is a 1.5 mm as in pic however the replacement is 1.2 due to the kit always been for a 2.5 Alfa Six so I was thinking of getting these drilled out or buying a proper drill set for carbs .
So question is should I rather send this to a pro and hope he is a pro
![Smile :)](./images/smilies/icon_smile.gif)
or is it simple thing to do ?
What worries me is the hole could go egg shape ( elongate ) , get burs in it etc . Should you drill it slowly so not get to much heat in brass or quick to avoid the burrs . Once it's done how should I get the seating for the needle to fit perfectly . Tap something round in ? Any use of oil for drilling ?
It is a critical size to achieve as I have contacted guys who race with these cars and have said it must be 1.5 like I currently have .
Thoughts ? Send to pro ?