This project is a fully functional I5 engine model designed for 3D printing. It features:

• Moving crankshaft, pistons, timing chain, and two valves per cylinder, standard firing order: 1‑2‑4‑5‑3,

🔩 Assembly Details

The model is assembled using:

• Crankshaft and camshafts: 4x bearings 608 (you can print it from included files),

• Oil pan: 8 × M4 × 25 mm + nuts,

• Cylinder head: 4 × M4 × 25 mm + nuts,

🔩 Printing tips

• Camshafts: print split along the axis and glue after printing,

• Crankshaft: print vertically with supports,

• Springs: print with supports,

• Valves: print horizontally with supports (vertical printing likely to fail),

• Timing chain: print with 0.16 mm layer height,

• Fully printable timing chain,

Check out my other engine models!

Update 29.11.2025

A new timing kit has been added. It features smaller gears, and the new timing chain is significantly stronger.