This is the second installment of a description of a mazda 13b installed in a Defiant airplane. 

I will characterize the engine installation and some of the accessories. 

The picture shows the over all installation. Notice the taper of the engine at the firewall to the spinner. A nice taper is said to reduce the friction effects of prop blast on the cowl increasing thrust. I hope that statement is true. The radiator is mounted off the  fire wall with air flow going forward inside the cowl. The idea was to blow flame -heaven forbid - away from the firewall. The placement also puts a large amount of liquid between the engine and the firewall again to protect the firewall from flame. It should add a little
time to getting to the ground in case of fire. The large duct behind the reduction unit is the turbo outlet duct to the airbox. It was made as large as possible to reduce pumping losses from the turbo. I have arbitrarily limited the output to 2700 rpm at the prop or 40 inches of manifold pressure. I am unsure of the strenght of the engine and do not want to over stress it.The large black duct at the back is part of the induction and fuel metering system. More about this later. The box with wires attached is a junction box for the digital engine monitoring system. There are rigid lines going from the injectors to near the fuel metering unit and flex lines from there to the metering unit.

I had to adapt the SAE fittings to the DIN fittings. Took a lathe and silver solder but worked out quite well. There are no leaks when properly tightened.

Chris
 
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