Changing Header Tank, Fuel and Vent lines-Hints, Tricks, Experience Welcome!

[PNWJARED]

I will be updating my header tank, I will be changing out the plastic molded tank for the aluminum. in addition I will be changing out the fuel lines, the vent lines mostly in an effort to alleviate the fuel smell I get in the cabin. Any experience our thoughts, advice ect... is welcome.

I have a new aluminum tank purchased from Kitfox.
-Remove old replace new in kind.

I currently have one fuel shutoff and one fuel filter each side from wing to Header tank.
-Upgrade fuel line to same size but use fuel injection line(Non Vapor Permeable)
-Eliminate the fuel shut offs (Only fuel shut off will be at console)

Vent line is Tygon tubing ran to one wing

-I have tried to follow the multiple AD's on the matter. Most of which are from
earlier models 4 & 5 i think.
-My vent line seems to have fuel in it?? its that ok or normal?? A little input in
proper venting procedures would be nice. Though really it seems connect A-B
-I do like to utilize a slip. I am a little unsure if fuel in the header vent is normal

Any other thoughts hints or tricks would be nice.

[PNWJARED]

I have a Kitfox 7 early version

[jrevens]

Yes, fuel in the vent line is normal. The fuel in that line will be at the same level as the fuel in the main feed lines from the tanks.

[Dave S]

Jared,

Based on your post, I'd say you have it figured out. I think you will like the new tank and the non-permeable lines. We have no fuel odor in the cabin with the new setup (Aluminum tank and non permeable lines) - kinda stunk before I changed it.

You can slip to your heart's content. I have found that it is possible, with full fuel tanks and a maximum slip, to squirt a little fuel out the down wing fuel filler cap pitot and have it hit the tail in front ot the HS - but not a big problem.

Curious - do you have the manual trim? We do in our early S7.

[PapuaPilot]

You mention removing two fuel filters from the tank supply lines. I just want to make sure you have a fuel filter somewhere in the system before the fuel enters the carb/engine.

[PNWJARED]

i was going to remove the two shut off valves. I think there is differing opinion on wether or not to leave the filters at that location. I don't see the harm plus you can visually see if your getting a lot of sediment out of the tank. I don't think they will add any odor. but changing them means fuel in the cockpit again. Maybe best to put them somewhere else. Any suggestions.

Yes I have the S7 with manual trim tab. I don't mind the arrangement though I believe it diminishes the elevator authority. I feel like I run out of elevator. I may want at some point to convert to the SS7 trim at some point.