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I have the viking 130 engine mounted on my cruzer and am starting to plan the fuel system. I bought the .62 gallon cylindrical header tanks from Viking and have been wondering how to add drains for draining any water that might accumulate in the fuel system. It looks like the larger header tanks have room for a drain but not the small header tanks. Does anyone on this forum have this setup with the .62 gallon cylindrical header tanks? Would adding drains in addition to wing tank drains be overkill?
I don't think it would be an overkill for the same reason most aircraft have wing tank drains and gascolators. Condensation on the sides or roof of wing tank will eventually mix with fuel as it sloshes around. If there is room you might consider installing one high pressure gascolator on the discharge side of your header tanks.