Air Cooled 2 Stroke Cylinder Head Using Shell Casting

Not Long ago, we decided to make a custom air cooled cylinder for a two stroke engine that we're developing.

We decided to use Shell casting, mainly because we'd never done it before.

First we CNC machined some patterns and some boxes to hold the sand

Heat the pattern and invert the sand over it. The sand is coated with a thermoplastic resin that binds together and forms a shell. This is used as the mold to pour the aluminum

Pour the aluminum. fettle and shotblast

Machine the Cylinder head to fit your engine

Enjoy!!