Before we begin with the engine installation, the holes through the firewall for the push-pull cables have to be drilled. The manual says to drill through the firewall from the rear and the gear bulkhead from the front. The challenge is that the two points aren’t on the same elevation. The push-pull cable is angled down.

Malcolm has a really long drill bit that he uses for this.

The location on the firewall is determined and also on the gear bulkhead. Then the hole is drilled through the firewall with a guesstimate of the angle downward. Then after the bit is through the firewall, I guide the bit through the gear bulkhead on the inside. With two people and the right drillbit, it was easy.