motorcycle engine 3d model

Complete motorcycle engine of a Honda Biz 125, model year 2011. Create a clean, technical, realistic 3D model of a small four-stroke motorcycle engine. Include the full engine assembly: crankcase, cylinder block, cylinder head, valve cover, intake system, exhaust port, carburetor, transmission housing, starter motor, oil pump area, cooling fins, and all visible bolts. Use realistic proportions and correct mechanical layout, based on a Honda Biz 125 engine. The model must be suitable for technical visualization and training, not cinematic or stylized. 🔩 Materials & colors Crankcase and main engine body in cast aluminum gray (slightly matte). Cylinder head and block in darker aluminum tone. Valve cover in black painted metal. Bolts and shafts in steel gray. Rubber parts (hoses, seals, intake boot) in dark black rubber, matte finish. Carburetor body in natural aluminum, brass details for jets. Intake and exhaust ports clearly distinguishable. 🧠 Geometry & structure Clean, simplified geometry with no lo