Hey, guys. Several years back, I got a gas cap, unvented. I refabricated it to look like a tear drop shape. Now I am painting this upper wing, I need to vent the cap. I am assuming I need to drill a hole in the cap, where, and what size dia? Does the cap need a snorkel type deal, or will a simple hole provide positive pressure to avoid syphoning?
ACSS sell the vented cap, but no picture....
https://www.aircraftspruce.com/catalog/appages/fuelFlange2.php
ACSS sell the vented cap, but no picture....
https://www.aircraftspruce.com/catalog/appages/fuelFlange2.php