Great day in the shop today. I had ordered a couple of stainless nipples to transition into the and out of the red cube and they showed up today. Spruce and Airparts didn't have these in a -6 size in stainless so I ordered them from Skygeek. When they showed up, the shipping and provenance paperwork showed that they actually came from Boeing distribution. Some guys will use race car parts on their airplane, and for non-critical stuff then yeah sure, but for fuel and oil systems, I wouldn't even consider using anything but aircraft hardware so it' nice to get that paperwork with specialty hardware.

With those last two fittings in hand, I finished installing all the fuel and oil lines from TS Flightlines. The only thing left plumbing wise is to fabricate a vent line from the weep hole in the fuel pump and an engine breather tube.

For the breather, I'm going to have to get an aluminum tube and hopefully a flex line thats better than the heater hose that vans sells for this application.

Rather than pay $35 for what's basically a glorified downspout from Vans I was hoping to find some 3/4" diameter aluminum tube at the Yard, but the last time I was down there all they had in 3/4" was thick wall, which is hard to bend and extra weight that I don't need, so the search continues.

There's no rush on this particular task, because the downspout terminates right above one of the exhaust pipes and I don't have my exhaust yet to determine exactly where that it.

For the fuel pump drain, I can go a couple of ways and I spent quite a bit of time looking at the pros and cons of each. For the RV7, Vans makes a fitting that's just a brass street elbow with a short 1/4" copper pipe soldered in one end. Shove a nylon hose on it, snake it over to the firewall and down to a short length of 1/4" aluminum tube poking out through a hole in the firewall flange.

On the RV14, they just go with a compression fitting to a nylon tube that then gets run aft with the tube from the sniffle valve line and vents between the exhaust.

I think I'm going to go with the RV7 installation, but I don't see why I need to solder a copper pipe in an elbow (or buy one from Vans) when theres already a local store bought solution. So with that in mind, I bought a simple brass hose barb from Ace hardware this afternoon and will play with this more later.

As I said, all of the fuel, oil, and associated sensor lines are installed, torqued, and adel clamped as appropriate. It's hard to see in the attached photos, but there is a minimum 1/2" clearance between everything. I'll look at the whole area again tomorrow, but based on what I can see so far, absolutely nothing has the potential to rub on anything else, and all line have the ability to flex a bit with engine shake.