It is the continuation of this. I was at the end promising a boxer engine; here it is. 2 cylinders; can be more or less; it's for the people who want to built an engine without the stuff that lego propose, ...
I searched a lot for the crankshaft; using the same technic as this would have be idiotic and not working.
It isn't LDD, so I can say that this is working, and if you want building instructions, i can made a ldd version; just leave a comment.
Thanks for watching, please rate and comment and have a look at my other creations.
Also leave a comment if you have other ideas to do it better (or worse 8-P)