Originally Posted by JohnnyJ
Yep, the rollover is a bulkhead fitting, so it should be in there.
From what I've seen the rollover valves don't always work that great on a side flop, so you may want to run the vent lines similar to U4 cars if you don't want to spill gas on a flop.
We flopped the Wag during a race and had never done either of the vent routing setups explained and we had fuel draining out of the cell until we cut a zip tie and moved it to the high side. (even though we had a roll over valve) Beyond the safety concern, it took us about 20 minutes until we had help to right the vehicle, and we didn't want to lose that much fuel since we are cheap asses.
The "3 and down" type routing do help gas spills since the vent will be higher than the tank in any orientation.
I copied the rule about having the vent away from exhaust because I figured that although it's common sense that you don't want gas vapors near hot exhaust, it was worth repeating.
butterfly valve on the vent works too... once you are out to turn the valve...
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