crankcase

When he had the crankcase full of oil the young man came out.

The bullet had entered the aluminum crankcase of the motor and pierced it through.

This can be seen in Figure 6, where the circular flange on the valve box contacts both the crankcase and the cylinder barrel.

With the crankcase, they did not go all the way to the modern two-piece form but instead retained the one-piece construction.

Each cylinder was fastened to the crankcase by four nuts on studs driven into the aluminum case.