Because this will be a very special engine, I need to find myself a good pair of crank cases which is not damaged by the chain.

The only one I could find is one from a Zappa engine.

This is how I found it.

Inside also good, (no woodpecker inside, trying to clamp the bearing)

Well dirty like this is not an option, we gona use this set so lets start cleaning.

When clean we can also look better if its the right cases to use.