The engine was air-cooled, with a fan attached to the flywheel to pull cool air through the engine block. This warm air, or hot air from the exhaust manifold, was then used to heat the passenger compartment, a novel approach which was not commonly used afterward. An engine block is the main part of an internal combustion engine. ... In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. ...
The engine was a dry-sump design with a pressurized oil system feeding from a tank. An electrical fuel pump was another high-tech novelty which would eventually be common. The electrical system was another matter — it had a separate redundant set of wiring on each side of the car. A dry sump is a lubricating oil management method for four-stroke and large two-stroke piston internal combustion engines that uses a secondary reservoir for oil, as compared to a conventional wet sump system. ...