Well, things have progressed slowly this week. We're back at school and the beginning of a new term is always hectic, so I haven't made the progress on the roadster that I would have liked.:( Anyway, these aren't exactly step-by-step shots, but there are a couple of things visible here.
First, the engine-turned aluminum firewall is back in place. Before I installed it, I put two countersunk 10-24 bolts through the firewall and the plywood reinforcement/battery mount inside. The purpose of the bolts is to make sure the plywood can't come loose even if the body filler adhesive lets go. I then installed the aluminum to the fiberglass body using 3-M spray adhesive. I used the adhesive to ensure that the aluminum stays flat & tight and won't ever rattle or squeak. The aluminum angle firewall lip was then installed with steel-shank pop-rivets. (I used all of them now instead of only 4 like back on page 27);)
The radiator is now in place with its fan attached. There is about 1/2 inch clearance between the tip of the water pump shaft and the back of the fan motor. I installed the nose and hood sides temporarily so I could make sure that the radiator support is adjusted properly.
Before I installed the exhaust manifold, I removed the heat-riser shroud and the sensor, welded a plug in the hole, and gave it a liberal coating of Krylon high-heat silver paint. My first experience with this paint was on my son's sedan. When we first fired his engine and the carburetor was malfunctioning, the headers got hot enough to glow bright orange. When they cooled off, the paint was undamaged!:eek::3dSMILE:
Finally, I built a new seat bottom frame in the shop at school. Using the old temporary OSB piece as a pattern, I built a perimeter style frame from a combination of hard maple and yellow pine. This one will get web-strapping woven across the openings before the installation of foam and upholstery.:D