Wouldn’t you know it.. The day after I seal up the firewall opening, I realize that I need to drill out one more rivet from the front and install a nutplate so that I can bolt on the oil breather line adel clamp. I don’t feel too bad, because the drawing is a bit confusing. I looked at it and where this nutplate goes it indicates “alternate location for engine ground”. Well I am going to use the top of the firewall to ground the engine, so I moved on, and didn’t realize this nutplate is also used to secure the oil breather.. ugh..
To complicate this, the nutplate is right behind a bar on the engine mount, so to drill the holes and shoot the rivets I had to get creative. All in all, anything is possible, it’s just a matter of how difficult. This one turned out to be fairly difficult but doable.. A recoverable mistake is always a good one.. Like any landing you can walk away from.. J
With Bekah’s help I used an angle drill to open up the holes for the #10 screw and nutplate attach points. Then she bucked the face of the firewall while I back riveted the nutplate from inside the fuse. Not an easy task, but we got it done per plans.
I also started sorting out the pressure transducer. This unit holds the pressure sensors and the tubes that feed pressure directly from the source to the sensor. I am setting it up so that top is the manifold pressure, middle is oil pressure, and bottom if fuel pressure.