[Nailbender]

My gas cap has double gaskets and the vent is closed. The fuel tank vents out the quarter trim. I have a glass fuel filter mounted near were the vent line ties into the filler neck. The fuel filter acts like a shock absorber when pulling G's and stops most if not all fuel from escaping. A mandatory fix that had to be done so I could continue competing. I fill my tank to the top before every event.

 

[Nailbender]

Best solution I've seen! What kind of nipple did you use and I can't make out the type of filter you used. Also, can you tell me where exactly on the quarter trim is vents out of? Thx!

Just a 1/4"npt nipple threaded into the side of the filler neck. Not much to thread into and it has to be removed to remove the filler neck, I use a little RVT on the threads. The filter is a generic 1/4" tube glass filter from Amazon. 65 hardtops have a hole that is full of dum dum "putty" from the factory behind the quarter panel extension. I just removed the putty and ran the hose down the quarter panel extension and cut it off even at the bottom. You should have a rollover valve to be safe, It's on my to do list.