Like my single cylinder motor? Well here is a four cylinder demonstration model. I like to make mechanical things and this was something I wanted to model in 3d. The printable v8 is on the way!
It was brought to my attention that the STL files weren't all they could be so I have fixed them, no more Skieinforge errors!
I have added a larger set of pistons but it requires really good settings.
Print with oneextra shell and 100% infill, that way you can get the parts to fit without braking and manipulate the finished holes and pegs for a snug fit. I used a piece of 3mm filament to put the pistons and connectors together, they fit perfectly this way.