V8_DatZun Posted December 10, 2006 Share Posted December 10, 2006 im installing a sbc 383 into my 1983 280zx. what is to be done with the evaporation tube from the gas tank? can i plug it off? or is that a bad idea? do i HAVE to have the charcoal canister? Quote Link to comment Share on other sites More sharing options...
Tony D Posted December 10, 2006 Share Posted December 10, 2006 Bad Idea! K&N makes a small "keychain" filter that will fit nicely on the 8mm pipe. If you simply plug it, and the rest of your tubes and hoses are properly sealed, you will suck a vacuum in the tank...to the point where the filler neck will collapse and in some extreme cases the tank will somewhat collapse (if you have a really good pump. If you have just an average pump, it will simply stop delivering fuel under cruise conditions, you run lean, start bucking, and wonder "WTF" as you coast to the roadside, unable to get it restarted. Then you hear a gian sucking sound when you open your gas cap, and then it mysteriously restarts without a problem for another 30 or so highway miles, until it does it again... Or so I'm told...I would never just plug it off! Not me! Never never never... Word of warning to the wise. You don't need a carbon cannister per-se, but you do need a way for air to get back into the tank as the fuel is sucked out of it. If your vent hoses are all leaking and broken up like most people's, you will never experience the above. But if you then later seal everything up tight, and go for a long drive you will hear the familiar refrain: "I've driven all over with that line plugged for years and never had this problem before!" Then you suddenly remember you just changed your vent hoses and the realization hits you.... Good Luck! Quote Link to comment Share on other sites More sharing options...
V8_DatZun Posted December 11, 2006 Author Share Posted December 11, 2006 thanks i thought that is what would happen... and i also thought about a filter but didnt know if that was the way to go... thanks for the help again. ill check out that filter Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.