The boot cowl was fitted in place, then match drilled to the holes in the fuselage. The lower edge was trimmed a little more. With the boot cowl in place, we could then proceed with the firewall fitting.
The engine and engine mount were removed so that we could create a posterboard template for the titanium firewall. After making the template, we laid it over the titanium firewall sheet, and trimmed it (with snips) to match.
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| Template in place over firewall material |
The firewall edge was deburred, and installed with clecos. We left about a 1/4 inch gap between the top of the firewall and the boot cowling, and a gasket (provided by Just) will be installed on the firewall later which will fill this gap.
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| Firewall fits nicely. |
Finally, the engine mount and engine were reattached.
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| Firewall and engine attached |
We also did a little work on the fuel pump installation, torqueing down the mounting nuts on the bottom of the fuel pump housing. The aft nut was tricky to get to, but we found that by rotating the whole pump mounting bracket, we could get easier access to the rear bolts... and then refasten the bracket in place afterwards. Hours: 8
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