This morning, I decided to install the engine mount, it went quite well. Six 3/8" bolts will maintain the mount to the firewall. The four outermost holes are drilled in the firewall but not in the steel brackets that are inside the fuselage. As those holes might not be well aligned with the mount holes, they have to be drilled in assembly with the mount.
I first outline the mount supports around the holes (blue line in the next pictures) and then clamp the mount to the firewall through the firewall recess hole.



Here is a picture through the upper mount on the right side, the structure behind the hole is not drilled yet. The other holes are a bit less centered (less than 1/16 off) but all are OK.



Drilling to 3/8 directly is not possible, so I first drill to 11/64 using a plastic bushing found at a hardware store in the US.



Then I drill to 1/4 using the bushing I removed from the right stick yesterday. (I had some steel bushings that were supposed to be 3/8 but were a little more).



Then I install 1/4 bolts before drilling to full size. As a bushing, I use some 3/8 aluminium tubing (I have a lot of leftovers from the fuel system).



The four corners being bolted, I drill the two central holes to 3/8 using the same steps as for the other holes except the 1/4 bolt.



Then I drill the four corners to 3/8. Here is a view from inside of the fuselage with two big lower bolts..



The parts to drill being quite thick, cutting oil must be used regularly and the shavings must be cleaned regularly too.

Not much work today, in fact I only faricated a new support bracket for the gascolator as I was not really satisfied with the first one.

The gascolator is not needed for fuel injection according to Van's, but I decided to install one. First the doubler is installed on the cabin side of the firewall.



Then I fabricate a support bracket for the Andair gascolator I'm going to install. This has to be done because the ports on the Vans gascolator are not at the same place as those on the Andair.



This is a picture of the gascolator installed on the firewall.



After the deburring and dimpling of all the parts, I had time to finish the battery tray. The tray has been repainted and the angles and nutplates riveted.

Still working on the relays' install. Holes had to be drilled for the nutplates, the doubler has to be countersunk. Here is a picture from the first test.



And a view from the cabin side.

Working again on the battery box, all the holes have to be deburred and dimpled. Next the box in installed on the firewall. To do this, some rivets have to be drilled out.



Under the battery box, battery and starter relay have to be installed. There are some more rivets to drill out, and a doubler to cut and drill. On the picture, everything is in postion but the drilling has still to be done.