V8 Engine Model | Moving parts

This project is a fully functional V8 engine model designed for 3D printing. It features:

• Moving crankshaft, pistons, timing chain, and two valves per cylinder, standard firing order: 1-8-4-3-6-5-7-2,
• Fully printable timing chain,
• Can be rotated manually or powered by a popular DC motor,

🔩 Assembly Details

The model is assembled using:

• Crankshaft and camshafts: 6x bearings 608 (you can print it from included files),
• Oil pan: 8 × M4 × 25 mm + nuts,
• Cylinder heads: 8 × M4 × 25 mm + nuts,
• Timing chain tensioner: 1 × M4 × 25 mm + nut, 608 bearing
• Timing chain guides: 2 × M4 × 10 mm + nuts,

Optional DC motor mount:

• 2 × M2.5 × 25 mm + nuts, or M3 × 25 mm screws (without nuts),
• O-ring for power transmission, 35 mm diameter,

🔩 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,

Assembly instruction: https://tiny.pl/w_8r6528d

Advanced DOHC V8 version: https://tiny.pl/r7bnrgbw6

Check out my other engine models!