Not really sure what your doing. If your installing a tank on your 34 chev than normally it would be under the trunk floor and a simple vent to air would vent it. If your going to install a Moon tank IN the trunk then it would have to be vented to the outside and a simple 1/4 in plastic hose from top of tank through the floor should do. Maybe explain a little better what your doing.
Ok sure, it is in my 34 in the trunk, the tank is made by Kustom tanks with roll over valve. it has a vent at the top. Do I just run a line out the body under the car, if gas is splashing around from driving will gas not want to run out the vent all over the under side of the car?
I don't know if it's right, but I just ran a hose from my rollover vent which dumps below the floor of the trunk behind the rear axle. The hose naturally loops up a couple inches above the top of the tank so no spillage issues.
Gas tanks usually have baffles to stop the gas from splashing around inside. So if you hook up like cboy say the baffles inside the tank and the loop at the top if the vent you shouldn't have a problem. A question though. Is this car for racing or is there another reason you went to a tank inside the car as opposed to the usual, under the trunk, position?? Just curious.
You asked about the correct way to vent a tank. If your not showing the underside of your car at shows, why not install a late model evaporative system. You would need a carbon canister, vent valve or solenoid, hose to intake manifold vac. This would also eliminate an unpleasant raw fuel smell, have clean emissions (hydrocarbons escaping in the air) and has no effect on performance. Big brother wants to eliminate us rodders. If they see that we do what we can to "help" it may keep them off our backs.
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