4 Stroke V-Twin / Mono Engine

The parts should to be printed on a smooth build plate, not textured.
If possible, avoid elephant foot.
I printed the model on a PRUSA MINI, with PLA+ filament, layer height 0.15 mm. 
I use Hard Plastic Glue.

For assembled and exploded views, use .stl files 00… A0... F0… G0… (do not print).
Printing and assembly instructions you will find in the document “Building Instructions 4 Stroke Engine.pdf”.

Dimensions V-TWIN: 236 x 76 x 178 mm.
Dimensions MONO: 169 x 76 x 213 mm.

Weight V-TWIN: 0.4 kg.
Weight MONO: 0.25 kg.

The MONO engine can eventually be “upgraded” to a V-Twin engine. Or even a boxer engine.

Update 9-1-2022: Redesign "H1 -Manifold.stl" because of slicer issues.
Update 11-1-2022: “F5 - Valve Cover.stl” is added.
Update 26-1-2022: Redesign camshaft parts G1 - G7. For easier assembly.